CheckBox in Command Item Template

[David Penny]

Hi,

I almost have the following working but am missing a little bit of information.

I have a RadGrid with the following definition in the Command Item Template:

<CommandItemTemplate>
                    <table style="width: 100%;">
                        <tr>
                            <td style="width: 50%;">
                                <a href="#" onclick="return ShowInsertForm();">
                                    <img alt="Insert" border="0" height="20" src="AddRecord.gif" width="20">
                                    Add New Record</a>
                            </td>
                            <td style="width: 50%" align="right">
                                <asp:CheckBox ID="chkShowCompleted"  OnCheckedChanged="chkShowCompleted_CheckChanged"
                                runat="server" Text="Show Completed" Width="163px"
                                    AutoPostBack="True" />
                            </td>
                        </tr>
                    </table>
                </CommandItemTemplate>

Works great and shows exactly as I want.

I then have:

    Protected Sub chkShowCompleted_CheckChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim chkbox As CheckBox = sender
        lblShowComplete.Text = "False"
        If chkbox.Checked Then
            lblShowComplete.Text = "True"
        End If
        RadGrid1.Rebind()
    End Sub

Again, seems to work OK.  I look at the value in lblShowComplete when rebinding the grid and can evaluate whether to show complete records or not.

What I cannot seem to work out is how to keep the checkbox checked when the grid is re-displayed.  I could do it by setting the CheckBox control, but don't know how to access it within the Command Item Template.

Any help appreciated

David Penny

[Daniel]

Hello David,

Please test the following approach:

GridItem commandItem = RadGrid1.MasterTableView.GetItems(GridItemType.CommandItem)[0];
CheckBox cbox = (CheckBox)commandItem.FindControl("chkShowCompleted");
cbox.Checked = false;

Let me know if you need more information.

Best regards,
Daniel
the Telerik team

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[David Penny]

Daniel,

Thanks for the response.  Where do I place this code?

David Penny

[Shinu]

Hi David,

You can try the above given code in the Grid PreRender event. For persisting the CheckBox state on Rebind I would suggest you to save the CheckBox state in a ViewState.

CS:

 protected void chkShowCompleted_CheckChanged(object sender, EventArgs e)
    {
        CheckBox chkbox =(CheckBox)sender;

        if (chkbox.Checked)
        {
            lblShowComplete.Text = "True";
            ViewState["CheckBox"] = "true";
        }
        else
        {
            lblShowComplete.Text = "False";
            ViewState["CheckBox"] = "false";
        }

         RadGrid1.Rebind();
    }



 protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        GridItem commandItem = RadGrid1.MasterTableView.GetItems(GridItemType.CommandItem)[0];
        CheckBox cbox = (CheckBox)commandItem.FindControl("chkShowCompleted");
        if (ViewState["CheckBox"]=="true")
            cbox.Checked = true;
        else
            cbox.Checked = false;

    }

Shinu

[David Penny]

Shinu,

Thanks - that works brilliantly.

David Penny

[Princy]

Hello David,

The state of CheckBox control in GridTemplateColumn will not persist on rebinding the RadGrid. You can refer the following documentation on how to retain the checkbox state on rebind. Checkout the link bekow.
Persisting CheckBox control state in GridTemplateColumn on rebind

Thanks,
Princy.