radgrid OnItemDataBound doesnt bind after Sorting

[Nambi]

Hi,
           I have a rad grid which has three columns ie, one link button and two labels. Link button should be enabled based on some logic. So i did this in
OnItemDataBound of the RadGrid and it was working fine when the page loads first time. But when i do any sorting by clicking on one of the columns
the link enabling and disabling logic doesnt reflect in UI. Ie, the first column not getting binded after OnItemDataBound.


.aspx.cs:
protected void radgrid1_OnNeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
        {
            FillGrid();

        }

 protected void radgrid1_OnItemDataBound(object sender, GridItemEventArgs e)
        {
            if (e.Item is GridDataItem)
            {
                GridDataItem item = (GridDataItem)e.Item;
                LinkButton btnView = (LinkButton)item.FindControl("btnView");
                DataRowView v = (DataRowView)e.Item.DataItem;
                string Quotation_no = v.DataView[e.Item.ItemIndex]["Quotation_no"].ToString();
                string str= btnView.Enabled.ToString();
                
                if (Quotation_no.Trim().Equals("1"))
                {                   
                        btnView.Enabled = false;
                        btnView.Text = Quotation_no + "gg";             
                }
                else
                {               
                     btnView.Enabled = true;
                     btnView.Text = Quotation_no + "mm";
                }

            }
        }

.aspx:
        <telerik:RadGrid runat="server" ID="radgrid1" AutoGenerateColumns="False" AllowSorting="true"
            AllowPaging="true" OnNeedDataSource="radgrid1_OnNeedDataSource" OnItemDataBound="radgrid1_OnItemDataBound"
            OnSortCommand="radGrid1_SortCommand">
            <MasterTableView Width="100%" PagerStyle-AlwaysVisible="true" EnableNoRecordsTemplate="true"
                ShowHeadersWhenNoRecords="false">
                <NoRecordsTemplate>
                    No Data Found.
                </NoRecordsTemplate>
                <Columns>
                    <telerik:GridTemplateColumn UniqueName="Quotation_no" HeaderText="Quotation_no">
                        <ItemTemplate>
                            <asp:LinkButton ID="btnView" runat="server"></asp:LinkButton>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                    <telerik:GridTemplateColumn UniqueName="lob_desc" HeaderText="Decription" SortExpression="lob_desc">
                        <ItemTemplate>
                            <asp:Label ID="lblDesc" runat="server" Text='<%# Eval("lob_desc") %>'></asp:Label>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                    <telerik:GridTemplateColumn UniqueName="lob_desc" HeaderText="Units" SortExpression="UNITS">
                        <ItemTemplate>
                            <asp:Label ID="lblUnits" runat="server" Text='<%# Eval("UNITS") %>'></asp:Label>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                </Columns>
                <PagerStyle AlwaysVisible="True"></PagerStyle>
            </MasterTableView>
        </telerik:RadGrid>

[Radoslav]

Hi Nambi,

I tried to reproduce the described issue, but to no avail. When sorting is performed the ItemDataBound is fired. On the following link I attached a small video which demonstrates that. Additionally to achieve the desired functionality I suggest you to change the code as following. Add Quotation_no as DataKeyNames:

<MasterTableView Width="100%" PagerStyle-AlwaysVisible="true" EnableNoRecordsTemplate="true"
            ShowHeadersWhenNoRecords="false" DataKeyNames="Quotation_no">
            <NoRecordsTemplate>
                No Data Found.
            </NoRecordsTemplate>
            <Columns>

Change the code in ItemDataBound as following:

protected void radgrid1_OnItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            GridDataItem item = (GridDataItem)e.Item;
            LinkButton btnView = (LinkButton)item.FindControl("btnView");
            string Quotation_no = item.GetDataKeyValue("Quotation_no").ToString();
            if (Quotation_no.Trim().Equals("1"))
            {
                btnView.Enabled = false;
                btnView.Text = Quotation_no + "gg";
            }
            else
            {
                btnView.Enabled = true;
                btnView.Text = Quotation_no + "mm";
            }

        }
    }

Additionally I am sending you a simple example which is based on your code and contains the described changes. Please check it out and let me know if it helps you.

Regards,
Radoslav
Telerik

 

 

[Nambi]

Hi Admin,
         Thanks for the code. The thing which worked is the use of item.GetDataKeyValue.
string Quotation_no = item.GetDataKeyValue("Quotation_no").ToString();