单击链接按钮时获取aspgridview的选定行以获取隐藏的ID值 [英] Getting selected row of aspgridview when click on link button to get hidden ID value

问题描述

我使用aspgridview中的标题数据绑定链接按钮，并绑定隐藏的标签，其中包含ID值。当用户点击这个链接按钮时，我想访问ID值。我需要这样做，因为如果用户登录，那么只有我弹出详细信息窗口其他警告消息登录的详细信息。

在lnkTitle_Click（）事件我试图访问选定row找到标签控件。

  GridViewRow grdSelRow = GridView1.SelectedRow; 
标签lblID =（标签）grdSelRow.FindControl（lblID）; 
  

但是我将grdSelRow设置为null。

如何在gridview的linkbutton上点击选中的行？

问题是，当你点击一个GridView中的按钮时，该行将只是一个点击行而不是 SelectedRow 。如果你想使它成为SelectedRow，你必须在Button的标记中指定 CommandName =Select。

以下是完成您的需求的两种方法。

为ItemTemplate中的LinkBut​​ton连接一个onclick事件

标记

 < asp：TemplateField> 
< ItemTemplate> 
< asp：LinkBut​​ton ID =LinkBut​​ton1runat =server
 Text =Click1
 OnClick =LinkBut​​ton1_Click/> 
< / ItemTemplate> 
< / asp：TemplateField> 
  

隐藏代码

  protected void LinkBut​​ton1_Click（object sender，EventArgs e）
 {
 GridViewRow clickedRow =（（LinkBut​​ton）sender）.NamingContainer as GridViewRow; 
 Label lblID =（Label）clickedRow.FindControl（lblID）; 
} 
  

使用RowCommand捕获LinkBut​​ton点击。

标记

 < asp：TemplateField> 
< ItemTemplate> 
< asp：LinkBut​​ton ID =LinkBut​​ton2runat =server
 Text =Click2
 CommandName =MyCustomCommand/> 
< / ItemTemplate> 
< / asp：TemplateField> 
  

隐藏代码

  protected void GridView1_RowCommand（object sender，GridViewCommandEventArgs e）
 {
 if（e.CommandName.Equals（MyCustomCommand））
 {
 GridViewRow clickedRow = （（LinkBut​​ton）e.CommandSource）.NamingContainer作为GridViewRow; 
 Label lblID =（Label）clickedRow.FindControl（lblID）; 
} 
} 
  

I am binding link button with title data in aspgridview and also binding hidden label which holds the ID value. when user click on this link button I would like to access the ID value. This I need because, if user logs in then only I popup detail window else alert message to login for details.

in lnkTitle_Click() event I am trying to access the selected row to find the label control.

GridViewRow grdSelRow = GridView1.SelectedRow;
Label lblID = (Label)grdSelRow.FindControl("lblID");

But I am getting grdSelRow as null.

How to get the selected row when click on linkbutton of gridview?

解决方案

The problem is that when you click a button in a GridView, the row will only be a Clicked Row and not a SelectedRow. If you wanna make it the SelectedRow you have to specify CommandName="Select" in the Button's markup.

Here are two methods for accomplish your requirement.

Wiring up an onclick event for the LinkButton inside ItemTemplate

Markup

<asp:TemplateField>
    <ItemTemplate>
        <asp:LinkButton ID="LinkButton1" runat="server" 
                    Text="Click1" 
                    OnClick="LinkButton1_Click"/>
    </ItemTemplate>
</asp:TemplateField>

Code-behind

protected void LinkButton1_Click(object sender, EventArgs e)
{
    GridViewRow clickedRow = ((LinkButton) sender).NamingContainer as GridViewRow;
    Label lblID = (Label)clickedRow.FindControl("lblID");
}

Using RowCommand to catch the LinkButton click.

Markup

<asp:TemplateField>
    <ItemTemplate>
        <asp:LinkButton ID="LinkButton2" runat="server" 
                    Text="Click2" 
                    CommandName="MyCustomCommand"/>
    </ItemTemplate>
</asp:TemplateField>

Code-behind

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if(e.CommandName.Equals("MyCustomCommand"))
    {
        GridViewRow clickedRow = ((LinkButton)e.CommandSource).NamingContainer as GridViewRow;
        Label lblID = (Label)clickedRow.FindControl("lblID");
    }
}

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