Question

I have a checkbox in repeater control.
on changing it’s bit value, it should prompt the alert message like do u wish to delete?
and if yes is selected, the onselectedchange server event should be fired.

Right now. on clicking the checkbox i am using onclick event to fire the prompt but it is not able to fire the server event.

here is my code

<script language="javascript" type="text/javascript">

function CheckedChange() {
         if (confirm('Are you sure you want to delete?'))
             return true;
         else
             return false;
     }
</script>

<asp:Repeater ID="repQuestion" runat="server"  onitemcommand="repQuestion_ItemCommand"                                                    onitemdatabound="repQuestion_ItemDataBound">

<ItemTemplate>
<table  width="100%" cellspacing="0" cellpadding="0">
<tr>
<td>
<asp:CheckBox onclick="return CheckedChange();" ID="delete" runat="server" Checked='<%#DataBinder.Eval(Container.DataItem, "IsDeleted")%>' OnCheckedChanged="chkdelete_Click" />
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>

Answer 1

Work around this snippet.

The Repeater.

<asp:Repeater ID="Repeater1" runat="server">
    <ItemTemplate>
        <table>
            <tr>
                <td><%# Eval("Index") %></td>
                <td>
                    <asp:CheckBox ID="delete" runat="server" 
                            AutoPostBack="true"
                            Checked='<%# Convert.ToBoolean(Eval("IsDeleted")) %>'
                            Enabled='<%# !Convert.ToBoolean(Eval("IsDeleted")) %>'
                            OnCheckedChanged="chkdelete_Click" 
                            onclick="javascript:return CheckedChange(this)"/>              
                </td>
            </tr>
        </table>
    </ItemTemplate>
</asp:Repeater>

JavaScript

function CheckedChange(objCheckBox) {
    if (confirm('Are you sure you want to delete?')) {
        __doPostBack("'" + objCheckBox.id + "'", '');
        return true;
    }
    else {
        objCheckBox.checked = false;
        return false;
    }
}

Page_Load Event

protected void Page_Load(object sender, EventArgs e)
{
    try
    {
        if (!IsPostBack)
        {
            //bind gridview here
            DataTable dataTable = new DataTable
            {
                Columns = { "Index", { "IsDeleted", typeof(bool) } }
            };
            bool temp = true;
            for (var i = 0; i < 6; i++)
            {
                dataTable.Rows.Add((i + 1).ToString(), temp);
                temp = !temp;
            }

            Repeater1.DataSource = dataTable;
            Repeater1.DataBind();
        }
    }
    catch (Exception exception)
    {
        //Elmah.ErrorSignal.FromCurrentContext().Raise(exception);
    }
}

Well, I don’t personally like exposing the __doPostBack but this seems to be the only way in this case.

On an unrelated side note, if you are showing deleted items, its better to show them disabled.