添加行ASP.NET GridView的？ [英] Add Row to ASP.NET GridView?
本文介绍了添加行ASP.NET GridView的？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有以下的GridView其中有一对夫妇DropDownLists和文本框。我如何添加一个新行吧，在坚持现有的GridView。我想用的LinkButton添加新行。我不使用数据源控件和GridView控件是通过一个DataTable当前填充。这里是GridView的：
＆LT; ASP：LinkButton的ID =btnAdd=服务器文本=添加室
的onclick =btnAdd_Click＆GT;＆LT; / ASP：LinkButton的＆GT;
＆LT; ASP：GridView控件ID =GVRP=服务器的AutoGenerateColumns =假
onrowdatabound =gvRP_RowDataBound
onrowediting =gvRP_RowEditing＆GT;
＆LT;柱体和GT;
＆LT; ASP：的TemplateField的HeaderText =房间ItemStyle-WIDTH =100％＆GT;
＆LT;＆ItemTemplate中GT;
＆LT; ASP：标签=服务器文本=房间＆GT;＆LT; / ASP：标签＆gt;
＆LT; ASP：DropDownList的ID =ddlRoom=服务器的AutoPostBack =真DataTextField =姓名
DataValueField =IDAppendDataBoundItems =真OnSelectedIndexChanged =ddlRoom_SelectedIndexChanged＆GT;
＆LT; ASP：ListItem的值= - 1＆GT;选择...＆LT; / ASP：ListItem的＆GT;
＆LT; / ASP：DropDownList的＆GT;
＆LT; ASP：标签=服务器AssociatedControlID =ddlRate文本=率ID =lblRate＆GT;＆LT; / ASP：标签＆gt;＆LT; ASP：DropDownList的
ID =ddlRate=服务器AppendDataBoundItems =真DataTextField =姓名
DataValueField =ID＆GT;
＆LT; ASP：ListItem的值= - 1＆GT;选择...＆LT; / ASP：ListItem的＆GT;
＆LT; / ASP：DropDownList的＆GT; ＆LT; ASP：标签=服务器文本=成人＆GT;＆LT; / ASP：标签＆gt;
＆LT; ASP：文本框ID =txtAdults文本='＆LT;％＃绑定（成人）％＆GT;' =服务器WIDTH =25像素＆GT;＆LT; / ASP：文本框＆GT;
＆LT; ASP：标签=服务器文本=儿童＆GT;＆LT; / ASP：标签＆gt;
＆LT; ASP：文本框ID =txtChildren文本='＆LT;％＃绑定（孩子）％＆GT;' =服务器WIDTH =25像素＆GT;＆LT; / ASP：文本框＆GT;
＆LT; ASP：标签=服务器文本=入住＆GT;＆LT; / ASP：标签＆gt;
＆LT; ASP：文本框ID =txtCheckIn文本='＆LT;％＃绑定（检入）％＆GT;' =服务器WIDTH =960x75像素＆GT;＆LT; / ASP：文本框＆GT;
＆LT; ASP：标签=服务器文本=退房及GT;＆LT; / ASP：标签＆gt;
＆LT; ASP：文本框ID =txtCheckOut文本='＆LT;％＃绑定（结帐）％GT;' =服务器WIDTH =960x75像素＆GT;＆LT; / ASP：文本框＆GT; ＆LT; H3＆GT;价格和LT; / H3 GT＆;
＆LT; ASP：GridView控件ID =GVR=服务器的AutoGenerateColumns =false的＆GT;
＆LT;柱体和GT;
＆LT; ASP：BoundField的数据字段=名称的HeaderText =率/＆GT;
＆LT; ASP：BoundField的数据字段=有效的HeaderText =有效/＆GT;
＆LT; ASP：BoundField的数据字段=过期的HeaderText =过期/＆GT;
＆LT; ASP：BoundField的数据字段=金额的HeaderText =金额/＆GT;
＆LT; ASP：BoundField的数据字段=code的HeaderText =货币/＆GT;
＆LT; /专栏＆GT;
＆LT; / ASP：GridView的＆GT;
＆LT; / ItemTemplate中＆GT;
＆LT; / ASP：的TemplateField＆GT;
＆LT; /专栏＆GT;
＆LT; / ASP：GridView的＆GT;
解决方案
通常我尝试做一个例子，但是这一次是相当彻底的，我不想的网址是去任何地方。请参考<一个href=\"http://www.aspsnippets.com/Articles/Adding-Dynamic-Rows-in-ASP.Net-GridView-Control-with-TextBoxes.aspx\"相对=nofollow>的COM prehensive例如此链接。
下面是最重要code。
电网
＆LT; FooterStyle HorizontalAlign =右/＆GT;
＆LT; FooterTemplate＆GT;
＆LT; ASP：按钮的ID =ButtonAdd=服务器文本=添加新行/＆GT;
＆LT; / FooterTemplate＆GT;
后面的 code
保护无效ButtonAdd_Click（对象发件人，EventArgs的发送）
{
AddNewRowToGrid（）
}私人无效AddNewRowToGrid（）
{
INT的rowIndex = 0; 如果（的ViewState [CurrentTable]！= NULL）
{
数据表dtCurrentTable =（数据表）的ViewState [CurrentTable];
DataRow的drCurrentRow = NULL;
如果（dtCurrentTable.Rows.Count大于0）
{
的for（int i = 1; I＆LT; = dtCurrentTable.Rows.Count;我++）
{
//提取文本框值
}
dtCurrentTable.Rows.Add（drCurrentRow）;
的ViewState [CurrentTable] = dtCurrentTable; Gridview1.DataSource = dtCurrentTable;
Gridview1.DataBind（）;
}
}
其他
{
的Response.Write（ViewState中为空）;
} 上回发//设置previous数据
设置previousData（）;
}
I have the following GridView which has a couple DropDownLists and TextBoxes. How can I add a new row to it, while persisting the existing GridView. I would like to Add the New row with the LinkButton. I am not using DataSource Controls and the GridView is currently populated via a DataTable. Here is the GridView:
<asp:LinkButton ID="btnAdd" runat="server" Text="Add Room"
onclick="btnAdd_Click"></asp:LinkButton>
<asp:GridView ID="gvRP" runat="server" AutoGenerateColumns="false"
onrowdatabound="gvRP_RowDataBound"
onrowediting="gvRP_RowEditing">
<Columns>
<asp:TemplateField HeaderText="Room" ItemStyle-Width="100%">
<ItemTemplate>
<asp:Label runat="server" Text="Room"></asp:Label>
<asp:DropDownList ID="ddlRoom" runat="server" AutoPostBack="True" DataTextField="Name"
DataValueField="Id" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlRoom_SelectedIndexChanged">
<asp:ListItem Value="-1">Select...</asp:ListItem>
</asp:DropDownList>
<asp:Label runat="server" AssociatedControlID="ddlRate" Text="Rate" ID="lblRate"></asp:Label><asp:DropDownList
ID="ddlRate" runat="server" AppendDataBoundItems="true" DataTextField="Name"
DataValueField="Id">
<asp:ListItem Value="-1">Select...</asp:ListItem>
</asp:DropDownList>
<asp:Label runat="server" Text="Adults"></asp:Label>
<asp:TextBox ID="txtAdults" Text='<%#Bind("Adults") %>' runat="server" Width="25px"></asp:TextBox>
<asp:Label runat="server" Text="Children"></asp:Label>
<asp:TextBox ID="txtChildren" Text='<%#Bind("Children") %>' runat="server" Width="25px"></asp:TextBox>
<asp:Label runat="server" Text="Check In"></asp:Label>
<asp:TextBox ID="txtCheckIn" Text='<%#Bind("CheckIn") %>' runat="server" Width="75px"></asp:TextBox>
<asp:Label runat="server" Text="Check Out"></asp:Label>
<asp:TextBox ID="txtCheckOut" Text='<%#Bind("CheckOut") %>' runat="server" Width="75px"></asp:TextBox>
<h3>Rates</h3>
<asp:GridView ID="gvR" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Rate" />
<asp:BoundField DataField="Effective" HeaderText="Effective" />
<asp:BoundField DataField="Expire" HeaderText="Expire" />
<asp:BoundField DataField="Amount" HeaderText="Amount" />
<asp:BoundField DataField="Code" HeaderText="Currency" />
</Columns>
</asp:GridView>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
解决方案
Usually I try and do an example, but this one is quite thorough, and I don't "think" the url is going anywhere. Please refer to this link for a comprehensive example.
Here's the important code.
grid
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row" />
</FooterTemplate>
code behind
protected void ButtonAdd_Click(object sender, EventArgs e)
{
AddNewRowToGrid()
}
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
}
dtCurrentTable.Rows.Add(drCurrentRow);
ViewState["CurrentTable"] = dtCurrentTable;
Gridview1.DataSource = dtCurrentTable;
Gridview1.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
//Set Previous Data on Postbacks
SetPreviousData();
}
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