GridView Delete Confirm MSG Error

Question

1.00/5 (1 vote)

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HI!

I have a Gridview with two command fields(Delete, Edit). I want to get a Confirm msg if the user clicks on delete, it works fine, but if he clicks on update, i get an error msg.

The code is:

C#

if (e.Row.RowType == DataControlRowType.DataRow)
            {
                // reference the Delete LinkButton
                LinkButton db = (LinkButton)e.Row.Cells[5].Controls[0];
                db.OnClientClick = "return confirm('Biztos benne, hogy törölni kívánja a kiválasztott célt?');";
            }

and the gridview is:

XML

<asp:GridView ID="GridView1" runat="server" AlternatingRowStyle-CssClass="gridview_alter"
                       AutoGenerateColumns="False" EmptyDataText=" " GridLines="None" OnRowCancelingEdit="RowCancelingEdit"
                       OnRowDataBound="GridView1_RowDataBound" OnRowDeleting="RowDeleting" OnRowEditing="RowEditing"
                       OnRowUpdating="RowUpdating" ShowHeaderWhenEmpty="True" Width="820px">
                       <AlternatingRowStyle CssClass="gridview_alter" />
                       <Columns>
                           <asp:TemplateField HeaderText="Leírás" Visible="false" />
                           <asp:BoundField DataField="Description" HeaderStyle-Width="150" HeaderText="Leírás" HtmlEncode="false">
                               <HeaderStyle Width="150px" />
                           </asp:BoundField>
                           <asp:BoundField HeaderText="Kritérium" DataField="IndexNumber" />
                           <asp:BoundField DataField="Weight" HeaderStyle-Width="50" HeaderText="Súly">
                               <HeaderStyle Width="50px" />
                           </asp:BoundField>
                           <asp:TemplateField HeaderStyle-Width="100" HeaderText="Cél típusa">
                               <ItemTemplate>
                                   <asp:Label ID="lblGoalType" runat="server"></asp:Label>
                               </ItemTemplate>
                               <HeaderStyle Width="100px" />
                           </asp:TemplateField>
                           <asp:CommandField DeleteText="Törlés" HeaderStyle-Width="60" ShowDeleteButton="true">
                               <HeaderStyle Width="60px" />
                           </asp:CommandField>
                                       <asp:CommandField CancelText="Mégse" DeleteText="Törlés" EditText="Szerkesztés"
                                           HeaderStyle-Width="60" ShowEditButton="True" UpdateText="Frissítés"
                                           ValidationGroup="Leírás, Súly">
                               <HeaderStyle Width="60px" />
                           </asp:CommandField>
                       </Columns>
                   </asp:GridView>

I get the error here:
LinkButton db = (LinkButton)e.Row.Cells[5].Controls[0];
and the error is:
Specified argument was out of the range of valid values.

Posted 14-Feb-14 3:02am

kirk651

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2 solutions

Solution 2

Try

XML

<asp:TemplateField ShowHeader="False">
            <ItemTemplate>
                <asp:ImageButton ID="DeleteButton" runat="server" ImageUrl="~/image.png"
                    CommandName="Delete" OnClientClick="return confirm('Are you sure you want to delete?');"
                    AlternateText="Delete" />
            </ItemTemplate>
        </asp:TemplateField>

Here is an example[^] of the confirmation box.

Posted 14-Feb-14 6:35am

Abhinav S

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kirk651 · Accepted Answer · 2014-02-14T03:14:00

I found the solution:

C#

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('Biztos benne, hogy törölni kívánja a kiválasztott célt?');";
    }
}

Anyway, thx everybody who read it, and hopefully, it will help anybody who has the same problem.