使用行命令在网格视图链接按钮上单击填充表单 [英] Populate the form on grid view link button click using row command
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问题描述
大家好我每个人在我的表单中都有一个gridview，因为我有编辑和删除链接按钮，我想根据我在gridview中选择的行填写表单文本框字段值。这是我的页面的标记
Hi Every one I have a gridview in my form , in that I have Edit and Delete link button , I want to fill the form text boxes field value based on the Row I have selected in the gridview. Here is the Markup of my page
<html>
<table>
<tr>
<td>
<table id="Table4" border="0" cellpadding="1" cellspacing="1" class="normal"
width="600">
<tr>
<td align="center" class="style5" colspan="3">
</td>
</tr>
<tr style="color: #cc0000">
<td class="HeaderText" colspan="3">
<asp:Label ID="Label1" runat="server" Text="Add New Notice "></asp:Label>
<hr />
</td>
</tr>
<tr>
<td class="style1">
</td>
<td>
</td>
<td class="normal">
</td>
</tr>
<TR>
<TD class="style1">Date of Notice :<font color="#ff0033">*</font></TD>
<TD class="normal"> </TD>
<TD class="normal"> </TD>
</TR>
<TR>
<TD class="style1">
<asp:TextBox ID="txtnoticedate" runat="server" Width="200px" CssClass="textbox"></asp:TextBox>
<ajax:CalendarExtender ID="txtnoticedate_CalendarExtender" runat="server"
Enabled="True" TargetControlID="txtnoticedate" PopupButtonID="imgbtncalendar">
</ajax:CalendarExtender>
<asp:ImageButton ID="imgbtncalendar" runat="server"
ImageUrl="~/Admin/Images/Calendar.png" />
</TD>
<TD class="style6">
</TD>
<TD class="style6">
</TD>
</TR>
<TR>
<TD class="style1">Title :<font color="#ff0033">*</font></TD>
<TD class="normal"> </TD>
<TD class="normal"> </TD>
</TR>
<TR>
<TD class="style1">
<asp:TextBox
ID="txtnoticetitle" runat="server" Width="200px" CssClass="textbox"></asp:TextBox>
</TD>
<TD>
</TD>
<TD>
</TD>
</TR>
<TR>
<TD class="style1">
Notice Body :<font color="#ff0033">*</font></TD>
<TD>
</TD>
<TD>
</TD>
</TR>
<TR>
<TD class="style1">
<asp:TextBox
ID="txtnoticebody" runat="server" Width="200px" CssClass="textbox"
TextMode="MultiLine"></asp:TextBox>
</TD>
<TD>
</TD>
<TD>
</TD>
</TR>
<TR>
<TD class="style1">
<asp:Button ID="btnSubmit" runat="server"
Text="Submit" CssClass="GridHeader" onclick="btnSubmit_Click" />
</TD>
<TD style="HEIGHT: 18px; text-align: left;" align="center">
</TD>
<TD style="HEIGHT: 18px">
</TD>
</TR>
<TR id="imageDot" runat="server">
<TD align="center" colSpan="3" style="height: 14px">
<asp:Label ID="lblerrormessage" runat="server" CssClass="errormsg" ForeColor="Red"></asp:Label>
</TD>
</TR>
<TR>
<TD align="center" colSpan="3">
<asp:ValidationSummary ID="ValidationSummary1" runat="server"
ShowMessageBox="True" ShowSummary="False" />
</TD>
</TR>
<TR>
<TD align="center" colSpan="3">
<asp:GridView ID="GridView1" runat="server" CellPadding="3" CssClass="GridItem"
HorizontalAlign="Center"
onselectedindexchanged="GridView1_SelectedIndexChanged"
onrowcommand="GridView1_RowCommand">
<Columns>
<asp:TemplateField HeaderText="Delete">
<ItemTemplate>
<asp:LinkButton ID="lnkbtnedit" runat="server" CausesValidation="False"
CommandName="RowUpdate" ForeColor="Black">Edit</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Edit">
<ItemTemplate>
<asp:LinkButton ID="lnkbtndelete" runat="server" CausesValidation="False"
CommandName="RowDelete" ForeColor="Black">Delete</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle BorderStyle="Solid" BorderWidth="1px" CssClass="GridHeader" HorizontalAlign="Left" />
</asp:GridView>
</TD>
</TR>
<TR>
<TD align="center" colSpan="3">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<Triggers>
<asp:PostBackTrigger ControlID="btnSubmit" />
</Triggers>
<ContentTemplate>
</ContentTemplate>
</asp:UpdatePanel>
</TD>
</TR>
</table>
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
Here is the code
Here is the code
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName.Equals("RowUpdate"))
{
txtnoticedate.Text = GridView1.SelectedRow.Cells[1].Text;
txtnoticetitle.Text = GridView1.SelectedRow.Cells[2].Text;
txtnoticebody.Text = GridView1.SelectedRow.Cells[3].Text;
}
}
It show Null reference exception . Please Help . Thanks in advance
It show Null reference exception . Please Help . Thanks in advance
推荐答案
Pass ID by CommandArgument='<%# Eval("Id") %>'
Then Get that id here by Session
if (e.CommandName == "RowUpdate")
{
Session["Id"] = e.CommandArgument.ToString();
}I added a command argument to the link button
I added a command argument to the link button
<itemtemplate>
<asp:linkbutton id="lnkbtnedit" runat="server" causesvalidation="False" xmlns:asp="#unknown">
CommandName="RowUpdate" ForeColor="Black" CommandArgument='<%#((GridViewRow)Container).RowIndex%>'>Edit</asp:linkbutton>
</itemtemplate>
then in the code i fetched the row index
then in the code i fetched the row index
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName.Equals("RowUpdate"))
{
int index = Convert.ToInt32(e.CommandArgument);
txtnoticedate.Text = GridView1.Rows[index].Cells[2].Text;
}
}
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