编写javascript以在gridview rowdeleting事件中确认删除

Question

我正在从 gridview 中删除一行，我已使用 gridview 的默认删除命令字段。单击时，将触发 gridview 行删除命令并删除所选行。到现在为止一切都很好。

但在删除该行之前，我需要向用户设置确认消息。单击“确定”按钮后，该行应该被删除，否则不会（单击“取消”按钮时）。

我的代码为；

return confirm('Are you sure to delete?');

但是，如果有一个链接按钮（而不是命令字段），则效果很好，因为我可以轻松地在链接按钮的 OnClick 事件上编写内容，并且可以在 Gridview RowDataBound 事件中添加属性。

对于命令的字段删除按钮同样如何工作？请指导！

谢谢！

Answer 1

本文介绍了如何完全满足您的需要：

http://www.codeproject.com/ KB/webforms/Gridview_Delete_confirmLS.aspx

这是您需要执行此操作的代码：

protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // loop all data rows
        foreach (DataControlFieldCell cell in e.Row.Cells)
        {
           // check all cells in one row
           foreach (Control control in cell.Controls)
           {
                // Must use LinkButton here instead of ImageButton
                // if you are having Links (not images) as the command button.
                ImageButton button = control as ImageButton;

                if (button != null && button.CommandName == "Delete")
                    // Add delete confirmation
                    button.OnClientClick = "return confirm('Are you sure you want to delete this record?');";
            }
        }
    }
}

Answer 2

这是您可以使用的代码......

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        foreach (DataControlField dcf in GridView1.Columns)
        {

            if (dcf.ToString() == "CommandField")
            {
                if (((CommandField)dcf).ShowDeleteButton == true)
                {
                    e.Row.Cells[GridView1.Columns.IndexOf(dcf)].Attributes.Add("onclick", "return confirm('Are you sure you want to delete?');");
                }
            }
        }
    }
}

Answer 3

试试这个。

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        foreach (DataControlFieldCell cell in e.Row.Cells)
        {
            foreach (Control control in cell.Controls)
            {
                // Choose between Button, ImageButton and LinkButton.
                // as my ButtonType="Button". 
                Button button = control as Button;
                if (button != null && button.CommandName == "Delete")
                {
                    string script = "if(confirm('Are you sure to delete?')) __doPostBack('{0}','{1}${2}'); else return false;";
                    string clickEvent = String.Format(
                        script,
                        GridView1.ClientID,
                        button.CommandName,
                        button.CommandArgument);
                    button.Attributes.Add("onclick", clickEvent);                                 
                    break;
                }
            }
        }
    }
}

比我最初预期的要脏得多。最好使用 asp:TemplateField :)

请注意我的 ButtonType="Button"