ASP.NET Gridview仅在确认时删除行

您应该使用javascript在客户端执行此操作。

因此，您可以处理GridView的RowDataBound事件，将其添加到删除按钮的OnClientClick:

protected void gvShowQuestionnaires_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // reference the Delete LinkButton
        LinkButton db = (LinkButton)e.Row.Cells[3].Controls[0];
        db.OnClientClick = "return confirm('Are you certain you want to delete this questionnaire?');";
    }
}

http://msdn.microsoft.com/en-us/library/bb428868.aspx

这个js函数会返回用户点击了ok还是cancel。如果js事件处理程序返回false，则页面将不会回发到服务器。

"return confirm（.."）Javascript走在了正确的轨道上。

问题是ASP.NET会附加js来调用__doPostBack

所以你会在HTML中为删除按钮得到这样的东西：

OnClickClient="return confirm('Are you sure you want to delete this record?');";javascript:__doPostBack('ctl00$Main$PlansGrid','Delete$101')"

结果是：1） 用户单击"删除"按钮。2） 显示确认对话框。3） 用户单击"确定"按钮。4） Confirm返回True。5） 执行语句开头的return，并且不调用__doPostBack。

解决方案是仅在confirm返回false时返回：

OnClientClick="if(!confirm('Are you sure you want to delete this Plan?')) return;"

如果用户单击"确定"，确认返回True，然后执行__doPostBack。

只需通过"return"调用者调用返回布尔值的JavaScript函数，因此如果返回false，则该链接按钮将不起作用。

ASPX-

<asp:LinkButton runat="server" OnClientClick="return DeleteItem();" locationID='<%# DataBinder.Eval (Container.DataItem,"Id").ToString() %>' ID="linkDelete" OnClick="linkDelete_Click" title='<%# "Delete " + DataBinder.Eval (Container.DataItem,"City").ToString() %>' Style="float: left;"><img src="Asset/img/icon/bin.gif" alt="" hspace="3" /></asp:LinkButton>

Javascript

<script type="text/javascript">
    function DeleteItem() {
        if (confirm("Delete this Location?")) {
            return true;
        } else {
            return false;
        }
    }
</script>

服务器端

protected void linkDelete_Click(object sender, EventArgs e)
    {
       int locationID =0;
       int.TryParse(((LinkButton)sender).Attributes["locationID"].ToString(),out locationID);
       if (locationID > 0)
       {
           Location loc = Location.GetById(locationID);
           CurrentDataContext.CurrentContext.DeleteObject(loc);
           CurrentDataContext.CurrentContext.SaveChanges();
           bindGv();
       }
    }

另一种方式：

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

 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        string id = e.Row.Cells[2].Text;
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            LinkButton db = (LinkButton)e.Row.Cells[6].Controls[0];
            db.OnClientClick = "return confirm('Are you want to delete this Work Description : " + id + "?');";
        }
    }

通过命令按钮类型获取

protected void gvShowQuestionnaires_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // handle the Command Column Index
        var commandColumnIndex = GvOperators.Columns
              .OfType<DataControlField>()
              .Select((x, i) => new { Index = i, Column = x })
              .FirstOrDefault(x => x.Column is CommandField)
              .Index;
        var commandButtons = e.Row.Cells[commandColumnIndex].Controls.OfType<LinkButton>();
        // reference the Delete LinkButton
        var db = commandButtons.FirstOrDefault(x => x.CommandName == "Delete");
        if(db!=null)       
          db.OnClientClick = "return confirm('Are you certain you want to delete this questionnaire?');";
    }
}