网格视图选定的索引

Question

I have a grid which contains a edit button . When i click the edit button and debug it does not hit to the selected index change event . There are no build errors

code behind the grid

public void btnModemDetailsEdit_Click(object sender, EventArgs e)
{
    isEdit = true;
}

protected void gridModemDetails_SelectedIndexChanged(object sender, EventArgs e)
{
    int id = Convert.ToInt32(GridModemDetails.DataKeys[GridModemDetails.SelectedIndex].Values["gridModemDetails_SelectedIndexChanged"].ToString());
}

<asp:GridView ID="GridModemDetails" runat="server" Width="435px" 
              DataKeyNames="ModemId" AllowPaging="True"
              OnSelectedIndexChanged="gridModemDetails_SelectedIndexChanged"
              AutoGenerateColumns="False">
    <Columns>
        <asp:TemplateField HeaderText="Edit" Visible="True" >
            <ItemTemplate>
                <asp:LinkButton ID="btnModemDetailsEdit" 
                                AccessibleHeaderText="Edit" 
                                ButtonType="Button" 
                                Text="Edit" 
                                HeaderText="Edit" 
                                runat="server" 
                                OnClick="btnModemDetailsEdit_Click"/>
            </ItemTemplate>
        </asp:TemplateField>

Answer 1

The GridView 's SelectedIndexChanged event is tied to the RowCommand event.

The simple way to get the SelectedIndexChanged event to fire is to use the AutoGenerateSelectButton property of the GridView , like this:

<asp:GridView AutoGenerateSelectButton="true"

This will add a button to each row with the text Select and when clicked, the SelectedIndexChange event will fire.

---

In the case of your edit button, you can use the CommandField in the grid view markup, like this:

<asp:GridView ...>
    <Columns>
        <asp:CommandField ShowEditButton="True" />
    </Columns>
</asp:GridView>

Now in your code-behind, you can handle the RowCommand event, like this:

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Edit") 
    {
        // Get the actual row
        GridViewRow theGridViewRow = GridView1.Rows(e.RowIndex);

        // Do something with grid view row here
    }
}