转发器中的数据更新 [英] data updation in repeater
本文介绍了转发器中的数据更新的处理方法，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
我在带有转发器的数据更新中使用了删除，删除按钮....当我单击编辑"时，将出现文本框，并且更改了文本框的值... bt，然后单击更新"按钮，它将使用旧的文本框值. ..未采用新的文本框值..
i used data updation in repeater with edit,delete button....when i click edit the textbox will appear and i changed the textbox value...bt then i click the update button it takes the old textbox value....the new textbox value not taken..
推荐答案
//aspx页面代码
//aspx page code
<div>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td class="hdng_cbox bdr_lft">
Name
</td>
<td align="center" class="hdng_cbox01 bdr_lft">
Image
</td>
<td class="hdng_cbox bdr_lft ">
Category
</td>
<td class="hdng_cbox bdr_lft ">
GroupID
</td>
<td class="hdng_cbox bdr_lft ">
Credits
</td>
<td class="hdng_cbox ">
</td>
</tr>
<tr>
<asp:Repeater ID="cpRepeater" runat="server" OnItemCommand="cpRepeater_ItemCommand"
OnItemDataBound="cpRepeater_ItemDataBound">
<ItemTemplate>
<tr>
<td class="bdr_top para_cbox bdr_lft">
<asp:Label ID="lblID" Visible="false" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "ID") %>'></asp:Label>
<asp:Label ID="lblName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name")%>'></asp:Label>
<asp:TextBox ID="txtName" BackColor="#d4d0c8" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name")%>'
Visible="false"></asp:TextBox>
</td>
<td align="center" class="bdr_lft bdr_top para_cbox ">
<img src="<%#Eval("thumbnail")%>" alt="" border="0" height="50" width="50" />
</td>
<td class="bdr_lft bdr_top para_cbox">
<asp:DropDownList ID="ddlType" runat="server">
</asp:DropDownList>
</td>
<td class="bdr_lft bdr_top para_cbox">
<asp:DropDownList ID="ddlgroup" runat="server">
</asp:DropDownList>
</td>
<td class="bdr_lft bdr_top para_cbox">
<asp:Label ID="lblcredit" runat="server" Text='<%# Eval("credit") %>'></asp:Label>
<asp:TextBox ID="txtcredit" BackColor="#d4d0c8" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "credit")%>'
Visible="false"></asp:TextBox>
</td>
<td class="bdr_top para_cbox">
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="edit" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ID") %>'>Edit</asp:LinkButton>
<asp:LinkButton Visible="false" ID="lnkUpdate" runat="server" CommandName="update"
CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ID") %>'>Update</asp:LinkButton>
<asp:LinkButton Visible="false" ID="lnkCancel" runat="server" CommandName="cancel"
CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ID") %>'>Cancel</asp:LinkButton>
<asp:LinkButton ID="lnkDelete" runat="server" CommandName="delete" OnClientClick='javascript:return confirm("Are you sure you want to delete?")'
CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ID") %>'>Delete</asp:LinkButton>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
</tr>
</table>
</div>
<div class="clear">
</div>
<div class="nextpages">
<asp:Repeater ID="rptPages" runat="server" OnItemCommand="rptPages_ItemCommand">
<ItemTemplate>
<asp:LinkButton ID="btnPage" CommandName="Page" CommandArgument="<%#Container.DataItem %>"
runat="server"><%# Container.DataItem %> </asp:LinkButton>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:Repeater>
</div>
//C#代码
//C# code
public int PageNumber
{
get
{
if (ViewState["PageNumber"] != null)
return Convert.ToInt32(ViewState["PageNumber"]);
else
return 0;
}
set
{
ViewState["PageNumber"] = value;
}
}
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
rptPages.ItemCommand += new RepeaterCommandEventHandler(rptPages_ItemCommand);
}
protected void rptPages_ItemCommand(object source, RepeaterCommandEventArgs e)
{
PageNumber = Convert.ToInt32(e.CommandArgument) - 1;
gridview();
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
string log = Session["login"].ToString();
if (log == "")
{
Response.Redirect("login.aspx");
}
else
{
if (!IsPostBack)
{
gridview();
}
}
}
catch (Exception jj2)
{
Response.Redirect("login.aspx");
}
}
public void gridview()
{
try
{
string sql = "select ID,name,thumbnail,Credit,Category,GroupID from images order by ID desc";
DataTable dt = DataBaseX.ReadTable(sql);
PagedDataSource pgitems = new PagedDataSource();
DataView dv = new DataView(dt);
pgitems.DataSource = dv;
pgitems.AllowPaging = true;
pgitems.PageSize = 6;
pgitems.CurrentPageIndex = PageNumber;
if (pgitems.PageCount > 1)
{
rptPages.Visible = true;
ArrayList pages = new ArrayList();
for (int i = 0; i < pgitems.PageCount; i++)
pages.Add((i + 1).ToString());
rptPages.DataSource = pages;
rptPages.DataBind();
}
else
rptPages.Visible = false;
cpRepeater.DataSource = pgitems;
cpRepeater.DataBind();
}
catch (Exception hgh2)
{
}
}
protected void cpRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
try
{
DropDownList ddlType = (DropDownList)e.Item.FindControl("ddlType");
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string sql = string.Format("select CatName from categories");
DataTable dt = DataBaseX.ReadTable(sql);
ddlType.DataTextField = "CatName";
ddlType.DataSource = dt;
ddlType.DataBind();
ddlType.SelectedValue = DataBinder.Eval(e.Item.DataItem, "Category").ToString();
}
DropDownList ddlgroup = (DropDownList)e.Item.FindControl("ddlgroup");
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
// string sql = string.Format("SELECT distinct i.groupid,g.name from images i,imagegroup g WHERE i.groupid=g.id");
string sql1 = string.Format("select ID from imagegroup");
DataTable dt1 = DataBaseX.ReadTable(sql1);
ddlgroup.DataTextField = "ID";
ddlgroup.DataSource = dt1;
ddlgroup.DataBind();
ddlgroup.SelectedValue = DataBinder.Eval(e.Item.DataItem, "GroupID").ToString();
}
}
catch (Exception nhbv3)
{
}
}
protected void cpRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
{
try
{
if (e.CommandName == "edit")
{
e.Item.FindControl("lblName").Visible = false;
e.Item.FindControl("lnkEdit").Visible = false;
e.Item.FindControl("txtName").Visible = true;
e.Item.FindControl("lblcredit").Visible = false;
e.Item.FindControl("txtcredit").Visible = true;
e.Item.FindControl("lnkUpdate").Visible = true;
e.Item.FindControl("lnkCancel").Visible = true;
}
if (e.CommandName == "update")
{
int imgid = Convert.ToInt32(((Label)e.Item.FindControl("lblID")).Text);
string name = ((TextBox)e.Item.FindControl("txtName")).Text;
int credit = Convert.ToInt32(((TextBox)e.Item.FindControl("txtcredit")).Text);
string category =((DropDownList)e.Item.FindControl("ddlType")).SelectedValue;
string sql = string.Format("update images set name='" + name + "' where ID=" + imgid);
DataBaseX.Execute(sql);
e.Item.FindControl("lblName").Visible = true;
e.Item.FindControl("lnkEdit").Visible = true;
e.Item.FindControl("txtName").Visible = false;
e.Item.FindControl("lblcredit").Visible = true;
e.Item.FindControl("txtcredit").Visible = false;
e.Item.FindControl("lnkUpdate").Visible = false;
e.Item.FindControl("lnkCancel").Visible = false;
gridview();
}
if (e.CommandName == "cancel")
{
e.Item.FindControl("lblName").Visible = true;
e.Item.FindControl("lnkEdit").Visible = true;
e.Item.FindControl("txtName").Visible = false;
e.Item.FindControl("lblcredit").Visible = true;
e.Item.FindControl("txtcredit").Visible = false;
e.Item.FindControl("lnkUpdate").Visible = false;
e.Item.FindControl("lnkCancel").Visible = false;
}
if (e.CommandName == "delete")
{
int sno = Convert.ToInt32(((Label)e.Item.FindControl("lblID")).Text);
string sql = string.Format("delete from images where ID=" + sno);
DataBaseX.Execute(sql);
gridview();
}
}
catch (Exception hbh2)
{
}
}
}
这篇关于转发器中的数据更新的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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