如何为GridView中的特定行删除行或禁用删除按钮？ [英] How to Delete a Row or Disable Delete Button for specific row in GridView?
问题描述
如何禁用 GridView 删除 按钮删除 rowindex = 0 。
行 on 删除 按钮点击。
我的 GridView 仅用于获取数据。我正在使用ak创建新行并将其作为 DataSource 用于 GridView 。
< asp：gridview ID =Gridview1runat =serverShowFooter =trueAutoGenerateColumns =falseAutoGenerateDeleteButton =trueOnRowDeleting =Gridview1_RowDeleting >
<列>
< asp：BoundField DataField =RowNumberHeaderText =Row Number/>
< asp：TemplateField HeaderText =WorkDone>
< ItemTemplate>
< asp：TextBox ID =txtWorkDonerunat =server>< / asp：TextBox>
< / ItemTemplate>
< / asp：TemplateField>
< asp：TemplateField HeaderText =花费的总时间>
< ItemTemplate>
< asp：DropDownList runat =serverID =ddlHours>
< asp：ListItem Selected =True> 1< / asp：ListItem>
< asp：ListItem> 2< / asp：ListItem>
< asp：ListItem> 3< / asp：ListItem>
< asp：ListItem> 4< / asp：ListItem>
< asp：ListItem> 5< / asp：ListItem>
< asp：ListItem> 6< / asp：ListItem>
< asp：ListItem> 7< / asp：ListItem>
< asp：ListItem> 8< / asp：ListItem>
< asp：ListItem> 9< / asp：ListItem>
< / asp：DropDownList>
< / ItemTemplate>
< FooterStyle HorizontalAlign =Right/>
< FooterTemplate>
< asp：Button ID =btnAddNewRowrunat =serverText =Add New Row
onclick =btnAddNewRow_ClickCausesValidation =false/>
< / FooterTemplate>
< / asp：TemplateField>
< /列>
< / asp：gridview>
但我找不到在事件 RowDeleting
pre $ protected void Gridview1_RowDeleting（object sender，GridViewDeleteEventArgs e）
{
// Here我没有得到
}
private void SetInitialRow（）
{
DataTable dt = new DataTable（）;
DataRow dr = null;
dt.Columns.Add（new DataColumn（RowNumber，typeof（string）））;
dt.Columns.Add（new DataColumn（WorkDone，typeof（string）））;
dt.Columns.Add（new DataColumn（TimeSpent，typeof（string）））;
dr = dt.NewRow（）;
dr [RowNumber] = 1;
dr [WorkDone] = string.Empty;
dr [TimeSpent] = string.Empty;
dt.Rows.Add（dr）;
//将DataTable存储在ViewState中
ViewState [CurrentTable] = dt;
Gridview1.DataSource = dt;
Gridview1.DataBind（）;
foreach（GridViewRow在Gridview1.Rows中的行）
{
if（row.RowIndex == 0）
{
//删除按钮必须被禁用
}
}
}
private void AddNewRowToGrid（）
{
int rowIndex = 0; （ViewState [CurrentTable]！= null）
DataTable dtCurrentTable =（DataTable）ViewState [CurrentTable];
DataRow drCurrentRow = null;
if（dtCurrentTable.Rows.Count> 0）
{
for（int i = 1; i <= dtCurrentTable.Rows.Count; i ++）
{
//提取文本框值
TextBox box1 =（TextBox）Gridview1.Rows [rowIndex] .Cells [1] .FindControl（txtWorkDone）;
DropDownList box2 =（DropDownList）Gridview1.Rows [rowIndex] .Cells [2] .FindControl（ddlHours）;
drCurrentRow = dtCurrentTable.NewRow（）;
drCurrentRow [RowNumber] = i + 1;
dtCurrentTable.Rows [i - 1] [WorkDone] = box1.Text;
dtCurrentTable.Rows [i - 1] [TimeSpent] = box2.SelectedItem.Text;
rowIndex ++;
}
dtCurrentTable.Rows.Add（drCurrentRow）;
ViewState [CurrentTable] = dtCurrentTable;
Gridview1.DataSource = dtCurrentTable;
Gridview1.DataBind（）;
}
}
else
{
Response.Write（ViewState is null）;
}
//在回传中设置以前的数据
SetPreviousData（）;
}
private void SetPreviousData（）
{
int rowIndex = 0;
if（ViewState [CurrentTable]！= null）
{
DataTable dt =（DataTable）ViewState [CurrentTable];
if（dt.Rows.Count> 0）
{
for（int i = 0; i< dt.Rows.Count; i ++）
{
TextBox box1 =（TextBox）Gridview1.Rows [rowIndex] .Cells [1] .FindControl（txtWorkDone）;
DropDownList box2 =（DropDownList）Gridview1.Rows [rowIndex] .Cells [2] .FindControl（ddlHours）;
box1.Text = dt.Rows [i] [WorkDone]。ToString（）;
box2.Text = dt.Rows [i] [TimeSpent]。ToString（）;
rowIndex ++;
帮助请任何一个！
解决方案试试这个
#regionVCoupons
private void SetInitialRow（）
{
DataTable dt = new DataTable（）;
DataRow dr = null;
//dt.Columns.Add（new DataColumn（RowNumber，typeof（string）））;
dt.Columns.Add（new DataColumn（Column1，typeof（string）））;
dt.Columns.Add（new DataColumn（Column2，typeof（string）））;
dt.Columns.Add（new DataColumn（Column3，typeof（string）））;
dt.Columns.Add（new DataColumn（Column4，typeof（string）））;
dr = dt.NewRow（）;
// dr [RowNumber] = 1;
dt.Rows.Add（dr）;
dt.TableName =Coupons;
//将DataTable存储在ViewState中
ViewState [dt_CouponData] = dt;
GridviewCoupon.DataSource = dt;
GridviewCoupon.DataBind（）;
$ b protected void ButtonAdd_Click（object sender，EventArgs e）
{
AddNewRowToGrid（）;
}
private void AddNewRowToGrid（）
{
int rowIndex = 0;
if（ViewState [dt_CouponData]！= null）
{
DataTable dt_CouponData =（DataTable）ViewState [dt_CouponData];
DataRow drCurrentRow = null;
if（dt_CouponData.Rows.Count> 0）
{
for（int i = 1; i <= dt_CouponData.Rows.Count; i ++ ）
{
//提取文本框值
TextBox box1 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [1] .FindControl（TextBox1 ）;
TextBox box2 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [2] .FindControl（TextBox2）;
TextBox box3 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [3] .FindControl（TextBox3）;
TextBox box4 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [4] .FindControl（TextBox4）;
drCurrentRow = dt_CouponData.NewRow（）;
// drCurrentRow [RowNumber] = i + 1;
drCurrentRow [Column1] = box1.Text;
drCurrentRow [Column2] = box2.Text;
drCurrentRow [Column3] = box3.Text;
drCurrentRow [Column4] = box4.Text;
rowIndex ++;
}
//向DataTable添加新行
dt_CouponData.Rows.Add（drCurrentRow）;
//将当前数据存储到ViewState
ViewState [dt_CouponData] = dt_CouponData;
//用当前数据重新绑定网格
GridviewCoupon.DataSource = dt_CouponData;
GridviewCoupon.DataBind（）;
}
}
else
{
Response.Write（ViewState is null）;
}
DataTable dt =（DataTable）ViewState [dt_CouponData];
//在回传中设置以前的数据
int n = dt.Rows.Count;如果（dt.Rows [0] [Column1]。ToString（）==&& dt.Rows [0] [Column2]。ToString（）==
if && dt.Rows [0] [Column3]。ToString（）==&& dt.Rows [0] [Column4]。ToString（）==）
{
SetPreviousData（）;
}
else
{
SetData（）;
private void SetPreviousData（）
{
int rowIndex = 0;
if（ViewState [dt_CouponData]！= null）
{
DataTable dt =（DataTable）ViewState [dt_CouponData];
if（dt.Rows.Count> 0）
{
for（int i = 1; i< dt.Rows.Count; i ++）
{
TextBox box1 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [1] .FindControl（TextBox1）;
TextBox box2 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [2] .FindControl（TextBox2）;
TextBox box3 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [3] .FindControl（TextBox3）;
TextBox box4 =（TextBox）GridviewCoupon.Rows [rowIndex] .Cells [3] .FindControl（TextBox4）;
box1.Text = dt.Rows [i] [Column1]。ToString（）;
box2.Text = dt.Rows [i] [Column2]。ToString（）;
box3.Text = dt.Rows [i] [Column3]。ToString（）;
box4.Text = dt.Rows [i] [Column4]。ToString（）;
rowIndex ++;
private void SetData（）
{
int rowIndex = 0;
if（ViewState [dt_CouponData]！= null）
{
DataTable dt =（DataTable）ViewState [dt_CouponData];
int n = dt.Rows.Count; （int i = 0; i
for（int j = 0; j< n-i-1; j ++ ）
{
if（dt.Rows [j] [Column1]。ToString（）== dt.Rows [j + 1] [Column1]。ToString（）&& dt.Rows [j] [Column2]。ToString（）== dt.Rows [j + 1] [Column2]。ToString（）&& dt.Rows [j] [Column3]。 ToString（）== dt.Rows [j + 1] [Column3]。ToString（）&& dt.Rows [j] [Column4]。ToString（）== dt.Rows [j + 1 ] [Column4]。ToString（））
{
dt.Rows [j + 1] [Column1] =;
dt.Rows [j + 1] [Column2] =;
dt.Rows [j + 1] [Column3] =;
dt.Rows [j + 1] [Column4] =;
$ b if（dt.Rows [n - 2] [Column1]。ToString（）==&& dt.Rows [n - 2] [Column2]。ToString（）==&& dt.Rows [n - 2] [Column3]。ToString（）==&& dt.Rows [n - 2] [Column4]。ToString（）==）
{
dt.Rows [n - 2] [Column1] = dt.Rows [n - 1] [Column1];
dt.Rows [n - 2] [Column2] = dt.Rows [n - 1] [Column2];
dt.Rows [n - 2] [Column3] = dt.Rows [n - 1] [Column3];
dt.Rows [n - 2] [Column4] = dt.Rows [n - 1] [Column4];
dt.Rows [n - 1] [Column1] =;
dt.Rows [n - 1] [Column2] =;
dt.Rows [n - 1] [Column3] =;
dt.Rows [n - 1] [Column4] =;如果（dt.Rows.Count> 0）
{
for（int i = 0; i< dt.Rows.Count - 1），
; i ++）
{
TextBox box1 =（TextBox）GridviewCoupon.Rows [i] .Cells [1] .FindControl（TextBox1）;
TextBox box2 =（TextBox）GridviewCoupon.Rows [i] .Cells [2] .FindControl（TextBox2）;
TextBox box3 =（TextBox）GridviewCoupon.Rows [i] .Cells [3] .FindControl（TextBox3）;
TextBox box4 =（TextBox）GridviewCoupon.Rows [i] .Cells [3] .FindControl（TextBox4）;
box1.Text = dt.Rows [i] [Column1]。ToString（）;
box2.Text = dt.Rows [i] [Column2]。ToString（）;
box3.Text = dt.Rows [i] [Column3]。ToString（）;
box4.Text = dt.Rows [i] [Column4]。ToString（）;
rowIndex ++;
}
}
int b = dt.Rows.Count;
//用当前数据重新绑定网格
$ b private void SaveCoupons（）
{
// int rowIndex = 0;
if（ViewState [dt_CouponData]！= null）
{
DataTable dt_CouponData =（DataTable）ViewState [dt_CouponData];
DataRow drCurrentRow = null;如果（dt_CouponData.Rows.Count> 0）
{
for（int i = 0; i< dt_CouponData.Rows.Count; i ++）
{
//提取文本框值
TextBox box1 =（TextBox）GridviewCoupon.Rows [i] .Cells [1] .FindControl（TextBox1 ）;
TextBox box2 =（TextBox）GridviewCoupon.Rows [i] .Cells [2] .FindControl（TextBox2）;
TextBox box3 =（TextBox）GridviewCoupon.Rows [i] .Cells [3] .FindControl（TextBox3）;
TextBox box4 =（TextBox）GridviewCoupon.Rows [i] .Cells [4] .FindControl（TextBox4）;
drCurrentRow = dt_CouponData.NewRow（）;
// drCurrentRow [RowNumber] = i + 1;
drCurrentRow [Column1] = box1.Text;
drCurrentRow [Column2] = box2.Text;
drCurrentRow [Column3] = box3.Text;
drCurrentRow [Column4] = box4.Text;
// rowIndex ++;
}
dt_CouponData.Rows.Add（drCurrentRow）;
//将新行添加到DataTable
//将当前数据存储到ViewState
ViewState [dt_CouponData] = dt_CouponData;
$ b}
}
else
{
Response.Write（ViewState is null）;
$ b private void Save（）
{
int rowIndex = 0;
if（ViewState [dt_CouponData]！= null）
{
DataTable dt_CouponData =（DataTable）ViewState [dt_CouponData];
DataRow drCurrentRow = null;如果（dt_CouponData.Rows.Count> 0）
{
for（int i = 0; i< dt_CouponData.Rows.Count; i ++）
{
//提取文本框值
TextBox box1 =（TextBox）GridviewCoupon.Rows [i] .Cells [1] .FindControl（TextBox1 ）;
TextBox box2 =（TextBox）GridviewCoupon.Rows [i] .Cells [2] .FindControl（TextBox2）;
TextBox box3 =（TextBox）GridviewCoupon.Rows [i] .Cells [3] .FindControl（TextBox3）;
TextBox box4 =（TextBox）GridviewCoupon.Rows [i] .Cells [4] .FindControl（TextBox4）;
drCurrentRow = dt_CouponData.NewRow（）;
// drCurrentRow [RowNumber] = i + 1;
drCurrentRow [Column1] = box1.Text;
drCurrentRow [Column2] = box2.Text;
drCurrentRow [Column3] = box3.Text;
drCurrentRow [Column4] = box4.Text;
// rowIndex ++;
}
//向DataTable添加新行
dt_CouponData.Rows.Add（drCurrentRow）;
int n = dt_CouponData.Rows.Count;
if（dt_CouponData.Rows [n - 2] [Column1]。ToString（）==&& dt_CouponData.Rows [n - 2] [Column2]。 && dt_CouponData.Rows [n - 2] [Column3]。ToString（）==&& dt_CouponData.Rows [n - 2] [Column4]。 ）
{
dt_CouponData.Rows [n - 2] [Column1] = dt_CouponData.Rows [n - 1] [Column1];
dt_CouponData.Rows [n - 2] [Column2] = dt_CouponData.Rows [n - 1] [Column2];
dt_CouponData.Rows [n - 2] [Column3] = dt_CouponData.Rows [n - 1] [Column3];
dt_CouponData.Rows [n - 2] [Column4] = dt_CouponData.Rows [n - 1] [Column4];
dt_CouponData.Rows [n - 1] .Delete（）;
}
int b = dt_CouponData.Rows.Count;
int a = b - 1;
if（dt_CouponData.Rows [a] [Column1]。ToString（）== dt_CouponData.Rows [a - 1] [Column1]。ToString（）&& dt_CouponData.Rows [a] [Column2]。ToString（）== dt_CouponData.Rows [a - 1] [Column2]。ToString（）&& dt_CouponData.Rows [a] [Column3]。ToString（）== dt_CouponData .Rows [a - 1] [Column3]。ToString（）& dt_CouponData.Rows [a] [Column4]。ToString（）== dt_CouponData.Rows [a - 1] [Column4] .ToString（））
{
dt_CouponData.Rows [a] .Delete（）;
}
//将当前数据存储到ViewState
ViewState [dt_CouponData] = dt_CouponData;
$ b}
}
else
{
Response.Write（ViewState is null）;
$ b private void SetPrevious（）
{
int rowIndex = 0;
if（ViewState [dt_CouponData]！= null）
{
DataTable dt =（DataTable）ViewState [dt_CouponData];
int o = 1;
int b = dt.Rows.Count;
int a = b - 1;
GridviewCoupon.DataSource = dt;
if（dt.Rows [0] [Column2]。ToString（）==）
{
dt.Rows [0] .Delete（）;
}
// else if（dt.Rows [a] [Column1]。ToString（）== dt.Rows [a - 1] [Column1]。ToString （）&& dt.Rows [a] [Column2]。ToString（）== dt.Rows [a - 1] [Column2]。ToString（）&& dt.Rows [a] [Column3]。ToString（）== dt.Rows [a - 1] [Column3]。ToString（）&& dt.Rows [a] [Column4]。ToString（）== dt .Rows [a - 1] [Column4]。ToString（））
// {
// dt.Rows [a] .Delete（）;
//}
// if（dt.Rows [o] [Column1]。ToString（）== dt.Rows [o - 1] [Column1]。ToString（）& amp ;& dt.Rows [o] [Column2]。ToString（）== dt.Rows [o - 1] [Column2]。ToString（）& dt.Rows [o] [Column3 ] .ToString（）== dt.Rows [o - 1] [Column3]。ToString（）&& dt.Rows [o] [Column4]。ToString（）== dt.Rows [ o - 1] [Column4]。ToString（））
// {
// dt.Rows [0] .Delete（）;
//}
GridviewCoupon.DataBind（）;
if（dt.Rows.Count> 0）
{
int j = dt.Rows.Count;
ViewState [dt_CouponData] = dt;
（int i = dt.Rows.Count - 1; i> = 0; i--）
{
TextBox box1 =（TextBox） GridviewCoupon.Rows [I] .Cells [1] .FindControl（ TextBox1中）;
TextBox box2 =（TextBox）GridviewCoupon.Rows [i] .Cells [2] .FindControl（TextBox2）;
TextBox box3 =（TextBox）GridviewCoupon.Rows [i] .Cells [3] .FindControl（TextBox3）;
TextBox box4 =（TextBox）GridviewCoupon.Rows [i] .Cells [4] .FindControl（TextBox4）;
box1.Text = dt.Rows [i] [Column1]。ToString（）;
box2.Text = dt.Rows [i] [Column2]。ToString（）;
box3.Text = dt.Rows [i] [Column3]。ToString（）;
box4.Text = dt.Rows [i] [Column4]。ToString（）;
// if（rowIndex< dt.Rows.Count-1）
// {
// rowIndex ++;
$ b protected void GridviewCoupon_RowCommand（object sender，GridViewCommandEventArgs e）
if（e.CommandName ==More）
{
objENT = new ENT（）;
DataTable dt =（DataTable）ViewState [dt_CouponData];
int index = Convert.ToInt32（e.CommandArgument.ToString（））;
if（dt.Rows [0] [Column1]。ToString（）==&& dt.Rows [0] [Column2]。ToString（）==& & dt.Rows [0] [Column3]。ToString（）==&& dt.Rows [0] [Column4]。ToString（）==）
{
index ++;
}
Save（）;
int count = dt.Rows.Count;
if（count == index）
{
dt.Rows [index - 1] .Delete（）;
}
else
{
dt.Rows [index] .Delete（）;
}
ViewState [dt_CouponData] = dt;
SetPrevious（）;
protected void GridviewCoupon_RowDataBound（object sender，GridViewRowEventArgs e）
{
if （e.RowType == DataControlRowType.DataRow）
{
Button Delete =（Button）e.Row.FindControl（btnDelete）;
DataRowView dr = e.Row.DataItem作为DataRowView;
int index = e.Row.RowIndex;
if（index == 0）
{
Delete.Visible = false;
}
else
{
Delete.Visible = true;
#endregion
div class =rowstyle =margin-top：2％ >
< div class =col-sm-1>< / div>
< div class =container-fluid col-sm-10>
< asp：GridView ID =GridviewCouponOnRowEditing =GridviewCoupon_RowEditingOnRowDataBound =GridviewCoupon_RowDataBoundOnRowCommand =GridviewCoupon_RowCommandrunat =serverEnabled =falseStyle =text-align： centerShowFooter =trueWidth =99％
AutoGenerateColumns =false>
<列>
<％ - < asp：BoundField DataField =RowNumberHeaderText =Sr NoHeaderStyle-BackColor =＃99CCCC/> - ％>
<％ - < asp：TemplateField HeaderText =Sr NoHeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：Label ID =txtbox0Text ='<％＃Bind（RowNumber）％>'runat =server>< / asp：Label>
< / ItemTemplate>
< / asp：TemplateField> - ％>
<％ - < asp：TemplateField HeaderText =Survey NumberHeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：TextBox ID =TextBoxSCssClass =form-controlrequired =requiredrunat =server>< / asp：TextBox>
< / ItemTemplate>
< / asp：TemplateField> - ％>
< asp：TemplateField HeaderText =优惠券代码HeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：TextBox ID =TextBox1required =requiredCssClass =form-controlrunat =server>< / asp：TextBox>
< / ItemTemplate>
< / asp：TemplateField>
< asp：TemplateField HeaderText =优惠券说明HeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：TextBox ID =TextBox2MaxLength =250required =requiredCssClass =form-controlrunat =server>< / asp：TextBox>
< / ItemTemplate>
< / asp：TemplateField>
< asp：TemplateField HeaderText =开始日期HeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：TextBox ID =TextBox3required =requiredplaceholder =DD / MMM / YYYYCssClass =form-control calrunat =server>< / asp：TextBox>
< / ItemTemplate>
< / asp：TemplateField>
< asp：TemplateField HeaderText =End DateHeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：TextBox ID =TextBox4required =requiredplaceholder =DD / MM / YYYYCssClass =form-controlrunat =server>< / asp：TextBox>
< / ItemTemplate>
< / asp：TemplateField>
< asp：TemplateField HeaderText =End DateHeaderStyle-BackColor =＃99CCCC>
< ItemTemplate>
< asp：Button ID =btnDeleteText =Delete
CommandArgument =<％＃（（GridViewRow）Container）.RowIndex％>
CommandName =MoreCssClass =btn-primary btn
Style =padding-top：1％; padding-bottom：1％; margin-top：1px; margin-bottom：1px runat =server/>
< / ItemTemplate>
< FooterStyle HorizontalAlign =Right/>
< FooterTemplate>
< asp：Button ID =ButtonAddFont-Bold =truerunat =serverText =Add New RowCssClass =btn-toolbar btnOnClick =ButtonAdd_Click/>
< / FooterTemplate>
< / asp：TemplateField>
< /列>
<％ - < FooterStyle BackColor =＃99CCCCForeColor =＃003399/> - ％>
< SelectedRowStyle BackColor =＃009999Font-Bold =TrueForeColor =＃CCFF99/>
< SortedAscendingCellStyle BackColor =＃EDF6F6/>
< SortedAscendingHeaderStyle BackColor =＃0D4AC4/>
< SortedDescendingCellStyle BackColor =＃D6DFDF/>
< SortedDescendingHeaderStyle BackColor =＃002876/>
< / asp：GridView>
< / div>
这里是整个代码通过，但像1-2天一样:)
希望它有帮助
I am facing a problem in how to disable GridView Delete Button for rowindex = 0.
Secondly, I want to Delete a Row on Delete Button clicked.
My GridView is used here for taking data only. I am using a k to create new row and serve it as DataSource for GridView.
<asp:gridview ID="Gridview1" runat="server" ShowFooter="true" AutoGenerateColumns="false" AutoGenerateDeleteButton="true" OnRowDeleting="Gridview1_RowDeleting">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="WorkDone">
<ItemTemplate>
<asp:TextBox ID="txtWorkDone" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Total Time spent">
<ItemTemplate>
<asp:DropDownList runat="server" ID="ddlHours">
<asp:ListItem Selected="True">1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
<asp:ListItem>7</asp:ListItem>
<asp:ListItem>8</asp:ListItem>
<asp:ListItem>9</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="btnAddNewRow" runat="server" Text="Add New Row"
onclick="btnAddNewRow_Click" CausesValidation="false"/>
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:gridview>
but I could not figure out what to implement inside event RowDeleting
protected void Gridview1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
//Here i am not getting
}
private void SetInitialRow()
{
DataTable dt = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));
dt.Columns.Add(new DataColumn("WorkDone", typeof(string)));
dt.Columns.Add(new DataColumn("TimeSpent", typeof(string)));
dr = dt.NewRow();
dr["RowNumber"] = 1;
dr["WorkDone"] = string.Empty;
dr["TimeSpent"] = string.Empty;
dt.Rows.Add(dr);
//Store the DataTable in ViewState
ViewState["CurrentTable"] = dt;
Gridview1.DataSource = dt;
Gridview1.DataBind();
foreach(GridViewRow row in Gridview1.Rows)
{
if(row.RowIndex == 0)
{
//Delete button must be disabled
}
}
}
private void AddNewRowToGrid()
{
int rowIndex = 0;
if (ViewState["CurrentTable"] != null)
{
DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
DataRow drCurrentRow = null;
if (dtCurrentTable.Rows.Count > 0)
{
for (int i = 1; i <= dtCurrentTable.Rows.Count; i++)
{
//extract the TextBox values
TextBox box1 = (TextBox)Gridview1.Rows[rowIndex].Cells[1].FindControl("txtWorkDone");
DropDownList box2 = (DropDownList)Gridview1.Rows[rowIndex].Cells[2].FindControl("ddlHours");
drCurrentRow = dtCurrentTable.NewRow();
drCurrentRow["RowNumber"] = i + 1;
dtCurrentTable.Rows[i - 1]["WorkDone"] = box1.Text;
dtCurrentTable.Rows[i - 1]["TimeSpent"] = box2.SelectedItem.Text;
rowIndex++;
}
dtCurrentTable.Rows.Add(drCurrentRow);
ViewState["CurrentTable"] = dtCurrentTable;
Gridview1.DataSource = dtCurrentTable;
Gridview1.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
//Set Previous Data on Postbacks
SetPreviousData();
}
private void SetPreviousData()
{
int rowIndex = 0;
if (ViewState["CurrentTable"] != null)
{
DataTable dt = (DataTable)ViewState["CurrentTable"];
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
TextBox box1 = (TextBox)Gridview1.Rows[rowIndex].Cells[1].FindControl("txtWorkDone");
DropDownList box2 = (DropDownList)Gridview1.Rows[rowIndex].Cells[2].FindControl("ddlHours");
box1.Text = dt.Rows[i]["WorkDone"].ToString();
box2.Text = dt.Rows[i]["TimeSpent"].ToString();
rowIndex++;
}
}
}
}
Help please any one!!
解决方案 try this
#region"VCoupons"
private void SetInitialRow()
{
DataTable dt = new DataTable();
DataRow dr = null;
//dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));
dt.Columns.Add(new DataColumn("Column1", typeof(string)));
dt.Columns.Add(new DataColumn("Column2", typeof(string)));
dt.Columns.Add(new DataColumn("Column3", typeof(string)));
dt.Columns.Add(new DataColumn("Column4", typeof(string)));
dr = dt.NewRow();
// dr["RowNumber"] = 1;
dt.Rows.Add(dr);
dt.TableName = "Coupons";
//Store the DataTable in ViewState
ViewState["dt_CouponData"] = dt;
GridviewCoupon.DataSource = dt;
GridviewCoupon.DataBind();
}
protected void ButtonAdd_Click(object sender, EventArgs e)
{
AddNewRowToGrid();
}
private void AddNewRowToGrid()
{
int rowIndex = 0;
if (ViewState["dt_CouponData"] != null)
{
DataTable dt_CouponData = (DataTable)ViewState["dt_CouponData"];
DataRow drCurrentRow = null;
if (dt_CouponData.Rows.Count > 0)
{
for (int i = 1; i <= dt_CouponData.Rows.Count; i++)
{
//extract the TextBox values
TextBox box1 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[3].FindControl("TextBox3");
TextBox box4 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[4].FindControl("TextBox4");
drCurrentRow = dt_CouponData.NewRow();
//drCurrentRow["RowNumber"] = i + 1;
drCurrentRow["Column1"] = box1.Text;
drCurrentRow["Column2"] = box2.Text;
drCurrentRow["Column3"] = box3.Text;
drCurrentRow["Column4"] = box4.Text;
rowIndex++;
}
//add new row to DataTable
dt_CouponData.Rows.Add(drCurrentRow);
//Store the current data to ViewState
ViewState["dt_CouponData"] = dt_CouponData;
//Rebind the Grid with the current data
GridviewCoupon.DataSource = dt_CouponData;
GridviewCoupon.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
DataTable dt = (DataTable)ViewState["dt_CouponData"];
//Set Previous Data on Postbacks
int n = dt.Rows.Count;
if (dt.Rows[0]["Column1"].ToString() == "" && dt.Rows[0]["Column2"].ToString() == "" && dt.Rows[0]["Column3"].ToString() == "" && dt.Rows[0]["Column4"].ToString() == "")
{
SetPreviousData();
}
else
{
SetData();
}
}
private void SetPreviousData()
{
int rowIndex = 0;
if (ViewState["dt_CouponData"] != null)
{
DataTable dt = (DataTable)ViewState["dt_CouponData"];
if (dt.Rows.Count > 0)
{
for (int i = 1; i < dt.Rows.Count; i++)
{
TextBox box1 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[3].FindControl("TextBox3");
TextBox box4 = (TextBox)GridviewCoupon.Rows[rowIndex].Cells[3].FindControl("TextBox4");
box1.Text = dt.Rows[i]["Column1"].ToString();
box2.Text = dt.Rows[i]["Column2"].ToString();
box3.Text = dt.Rows[i]["Column3"].ToString();
box4.Text = dt.Rows[i]["Column4"].ToString();
rowIndex++;
}
}
}
}
private void SetData()
{
int rowIndex = 0;
if (ViewState["dt_CouponData"] != null)
{
DataTable dt = (DataTable)ViewState["dt_CouponData"];
int n = dt.Rows.Count;
for (int i = 0; i < n - 1; i++)
{
for (int j = 0; j < n - i - 1; j++)
{
if (dt.Rows[j]["Column1"].ToString() == dt.Rows[j + 1]["Column1"].ToString() && dt.Rows[j]["Column2"].ToString() == dt.Rows[j + 1]["Column2"].ToString() && dt.Rows[j]["Column3"].ToString() == dt.Rows[j + 1]["Column3"].ToString() && dt.Rows[j]["Column4"].ToString() == dt.Rows[j + 1]["Column4"].ToString())
{
dt.Rows[j + 1]["Column1"] = "";
dt.Rows[j + 1]["Column2"] = "";
dt.Rows[j + 1]["Column3"] = "";
dt.Rows[j + 1]["Column4"] = "";
}
}
}
if (dt.Rows[n - 2]["Column1"].ToString() == "" && dt.Rows[n - 2]["Column2"].ToString() == "" && dt.Rows[n - 2]["Column3"].ToString() == "" && dt.Rows[n - 2]["Column4"].ToString() == "")
{
dt.Rows[n - 2]["Column1"] = dt.Rows[n - 1]["Column1"];
dt.Rows[n - 2]["Column2"] = dt.Rows[n - 1]["Column2"];
dt.Rows[n - 2]["Column3"] = dt.Rows[n - 1]["Column3"];
dt.Rows[n - 2]["Column4"] = dt.Rows[n - 1]["Column4"];
dt.Rows[n - 1]["Column1"]="";
dt.Rows[n - 1]["Column2"]="";
dt.Rows[n - 1]["Column3"]="";
dt.Rows[n - 1]["Column4"]="";
}
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count - 1; i++)
{
TextBox box1 = (TextBox)GridviewCoupon.Rows[i].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)GridviewCoupon.Rows[i].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)GridviewCoupon.Rows[i].Cells[3].FindControl("TextBox3");
TextBox box4 = (TextBox)GridviewCoupon.Rows[i].Cells[3].FindControl("TextBox4");
box1.Text = dt.Rows[i]["Column1"].ToString();
box2.Text = dt.Rows[i]["Column2"].ToString();
box3.Text = dt.Rows[i]["Column3"].ToString();
box4.Text = dt.Rows[i]["Column4"].ToString();
rowIndex++;
}
}
int b = dt.Rows.Count;
//Rebind the Grid with the current data
}
}
private void SaveCoupons()
{
//int rowIndex = 0;
if (ViewState["dt_CouponData"] != null)
{
DataTable dt_CouponData = (DataTable)ViewState["dt_CouponData"];
DataRow drCurrentRow = null;
if (dt_CouponData.Rows.Count > 0)
{
for (int i = 0; i < dt_CouponData.Rows.Count; i++)
{
//extract the TextBox values
TextBox box1 = (TextBox)GridviewCoupon.Rows[i].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)GridviewCoupon.Rows[i].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)GridviewCoupon.Rows[i].Cells[3].FindControl("TextBox3");
TextBox box4 = (TextBox)GridviewCoupon.Rows[i].Cells[4].FindControl("TextBox4");
drCurrentRow = dt_CouponData.NewRow();
// drCurrentRow["RowNumber"] = i + 1;
drCurrentRow["Column1"] = box1.Text;
drCurrentRow["Column2"] = box2.Text;
drCurrentRow["Column3"] = box3.Text;
drCurrentRow["Column4"] = box4.Text;
// rowIndex++;
}
dt_CouponData.Rows.Add(drCurrentRow);
//add new row to DataTable
//Store the current data to ViewState
ViewState["dt_CouponData"] = dt_CouponData;
}
}
else
{
Response.Write("ViewState is null");
}
}
private void Save()
{
int rowIndex = 0;
if (ViewState["dt_CouponData"] != null)
{
DataTable dt_CouponData = (DataTable)ViewState["dt_CouponData"];
DataRow drCurrentRow = null;
if (dt_CouponData.Rows.Count > 0)
{
for (int i = 0; i < dt_CouponData.Rows.Count; i++)
{
//extract the TextBox values
TextBox box1 = (TextBox)GridviewCoupon.Rows[i].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)GridviewCoupon.Rows[i].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)GridviewCoupon.Rows[i].Cells[3].FindControl("TextBox3");
TextBox box4 = (TextBox)GridviewCoupon.Rows[i].Cells[4].FindControl("TextBox4");
drCurrentRow = dt_CouponData.NewRow();
//drCurrentRow["RowNumber"] = i + 1;
drCurrentRow["Column1"] = box1.Text;
drCurrentRow["Column2"] = box2.Text;
drCurrentRow["Column3"] = box3.Text;
drCurrentRow["Column4"] = box4.Text;
// rowIndex++;
}
//add new row to DataTable
dt_CouponData.Rows.Add(drCurrentRow);
int n = dt_CouponData.Rows.Count;
if (dt_CouponData.Rows[n - 2]["Column1"].ToString() == "" && dt_CouponData.Rows[n - 2]["Column2"].ToString() == "" && dt_CouponData.Rows[n - 2]["Column3"].ToString() == "" && dt_CouponData.Rows[n - 2]["Column4"].ToString() == "")
{
dt_CouponData.Rows[n - 2]["Column1"] = dt_CouponData.Rows[n - 1]["Column1"];
dt_CouponData.Rows[n - 2]["Column2"] = dt_CouponData.Rows[n - 1]["Column2"];
dt_CouponData.Rows[n - 2]["Column3"] = dt_CouponData.Rows[n - 1]["Column3"];
dt_CouponData.Rows[n - 2]["Column4"] = dt_CouponData.Rows[n - 1]["Column4"];
dt_CouponData.Rows[n - 1].Delete();
}
int b = dt_CouponData.Rows.Count;
int a = b - 1;
if (dt_CouponData.Rows[a]["Column1"].ToString() == dt_CouponData.Rows[a - 1]["Column1"].ToString() && dt_CouponData.Rows[a]["Column2"].ToString() == dt_CouponData.Rows[a - 1]["Column2"].ToString() && dt_CouponData.Rows[a]["Column3"].ToString() == dt_CouponData.Rows[a - 1]["Column3"].ToString() && dt_CouponData.Rows[a]["Column4"].ToString() == dt_CouponData.Rows[a - 1]["Column4"].ToString())
{
dt_CouponData.Rows[a].Delete();
}
//Store the current data to ViewState
ViewState["dt_CouponData"] = dt_CouponData;
}
}
else
{
Response.Write("ViewState is null");
}
}
private void SetPrevious()
{
int rowIndex = 0;
if (ViewState["dt_CouponData"] != null)
{
DataTable dt = (DataTable)ViewState["dt_CouponData"];
int o = 1;
int b = dt.Rows.Count;
int a = b - 1;
GridviewCoupon.DataSource = dt;
if (dt.Rows[0]["Column2"].ToString() == "")
{
dt.Rows[0].Delete();
}
//else if (dt.Rows[a]["Column1"].ToString() == dt.Rows[a - 1]["Column1"].ToString() && dt.Rows[a]["Column2"].ToString() == dt.Rows[a - 1]["Column2"].ToString() && dt.Rows[a]["Column3"].ToString() == dt.Rows[a - 1]["Column3"].ToString() && dt.Rows[a]["Column4"].ToString() == dt.Rows[a - 1]["Column4"].ToString())
//{
// dt.Rows[a].Delete();
//}
//if (dt.Rows[o]["Column1"].ToString() == dt.Rows[o - 1]["Column1"].ToString() && dt.Rows[o]["Column2"].ToString() == dt.Rows[o - 1]["Column2"].ToString() && dt.Rows[o]["Column3"].ToString() == dt.Rows[o - 1]["Column3"].ToString() && dt.Rows[o]["Column4"].ToString() == dt.Rows[o - 1]["Column4"].ToString())
//{
// dt.Rows[0].Delete();
//}
GridviewCoupon.DataBind();
if (dt.Rows.Count > 0)
{
int j = dt.Rows.Count;
ViewState["dt_CouponData"] = dt;
for (int i = dt.Rows.Count - 1; i >= 0; i--)
{
TextBox box1 = (TextBox)GridviewCoupon.Rows[i].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)GridviewCoupon.Rows[i].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)GridviewCoupon.Rows[i].Cells[3].FindControl("TextBox3");
TextBox box4 = (TextBox)GridviewCoupon.Rows[i].Cells[4].FindControl("TextBox4");
box1.Text = dt.Rows[i]["Column1"].ToString();
box2.Text = dt.Rows[i]["Column2"].ToString();
box3.Text = dt.Rows[i]["Column3"].ToString();
box4.Text = dt.Rows[i]["Column4"].ToString();
//if (rowIndex<dt.Rows.Count-1)
//{
// rowIndex++;
//}
}
}
}
}
protected void GridviewCoupon_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "More")
{
objENT = new ENT();
DataTable dt = (DataTable)ViewState["dt_CouponData"];
int index = Convert.ToInt32(e.CommandArgument.ToString());
if (dt.Rows[0]["Column1"].ToString() == "" && dt.Rows[0]["Column2"].ToString() == "" && dt.Rows[0]["Column3"].ToString() == "" && dt.Rows[0]["Column4"].ToString() == "")
{
index++;
}
Save();
int count = dt.Rows.Count;
if (count == index)
{
dt.Rows[index - 1].Delete();
}
else
{
dt.Rows[index].Delete();
}
ViewState["dt_CouponData"] = dt;
SetPrevious();
}
}
protected void GridviewCoupon_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Button Delete = (Button)e.Row.FindControl("btnDelete");
DataRowView dr = e.Row.DataItem as DataRowView;
int index = e.Row.RowIndex;
if (index == 0)
{
Delete.Visible = false;
}
else
{
Delete.Visible = true;
}
}
}
#endregion
<div class="row" style="margin-top: 2%">
<div class="col-sm-1"></div>
<div class="container-fluid col-sm-10">
<asp:GridView ID="GridviewCoupon" OnRowEditing="GridviewCoupon_RowEditing" OnRowDataBound="GridviewCoupon_RowDataBound" OnRowCommand="GridviewCoupon_RowCommand" runat="server" Enabled="false" Style="text-align: center" ShowFooter="true" Width="99%"
AutoGenerateColumns="false">
<Columns>
<%--<asp:BoundField DataField="RowNumber" HeaderText="Sr No" HeaderStyle-BackColor="#99CCCC" />--%>
<%-- <asp:TemplateField HeaderText="Sr No" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:Label ID="txtbox0" Text='<%# Bind("RowNumber")%>' runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>--%>
<%--<asp:TemplateField HeaderText="Survey Number" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:TextBox ID="TextBoxS" CssClass="form-control" required="required" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>--%>
<asp:TemplateField HeaderText="Coupon Code" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:TextBox ID="TextBox1" required="required" CssClass="form-control" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Coupon Description" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:TextBox ID="TextBox2" MaxLength="250" required="required" CssClass="form-control" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Start Date" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:TextBox ID="TextBox3" required="required" placeholder="DD/MMM/YYYY" CssClass="form-control cal" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="End Date" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:TextBox ID="TextBox4" required="required" placeholder="DD/MM/YYYY" CssClass="form-control" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="End Date" HeaderStyle-BackColor="#99CCCC">
<ItemTemplate>
<asp:Button ID="btnDelete" Text="Delete"
CommandArgument="<%# ((GridViewRow) Container).RowIndex %>"
CommandName="More" CssClass="btn-primary btn"
Style="padding-top: 1%; padding-bottom: 1%; margin-top: 1px; margin-bottom: 1px" runat="server" />
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" Font-Bold="true" runat="server" Text="Add New Row" CssClass="btn-toolbar btn" OnClick="ButtonAdd_Click" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
<%-- <FooterStyle BackColor="#99CCCC" ForeColor="#003399" />--%>
<PagerStyle BackColor="#99CCCC" ForeColor="#003399" HorizontalAlign="Left" />
<RowStyle BackColor="White" ForeColor="#003399" />
<SelectedRowStyle BackColor="#009999" Font-Bold="True" ForeColor="#CCFF99" />
<SortedAscendingCellStyle BackColor="#EDF6F6" />
<SortedAscendingHeaderStyle BackColor="#0D4AC4" />
<SortedDescendingCellStyle BackColor="#D6DFDF" />
<SortedDescendingHeaderStyle BackColor="#002876" />
</asp:GridView>
</div>
here is the whole code came through but took me like 1-2 days:)
hope it helps
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