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RadGrid Export to Excel

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Grid

This is a migrated thread and some comments may be shown as answers.

Nelson asked on 28 Jan 2020, 04:40 AM

export-to-excel-error.png

export-to-excel-error-1.png

Hello everyone, I'm encountering some issues when I tried to export excel from Grid. I added three GridTemplateColumn which contained buttons in those template columns. The Export To Excel button is added with Telerik RadButton separately because of user requirement. When I clicked the export to excel button, the button inside of the GridTemplateColumn becomes null value. Can someone help me how to solve it?

The following code is my Telerik Grid

<telerik:RadGrid ID="RadGridSalesOrder" runat="server" Width="100%" Height="600px"

OnNeedDataSource="RadGridSalesOrder_NeedDataSource" OnItemDataBound="RadGridSalesOrder_ItemDataBound"

OnBiffExporting="RadGridSalesOrder_BiffExporting" OnPreRender="RadGridSalesOrder_PreRender"

GridLines="None" AllowSorting="false" ShowGroupPanel="false" ShowFooter="false"

CellSpacing="0" AutoGenerateColumns="False" RenderMode="Auto"

ClientSettings-Selecting-AllowRowSelect="true" FooterStyle-Height="20px"

EnableHeaderContextFilterMenu="True" AllowPaging="true" PageSize="2000" AllowMultiRowSelection="false"

MasterTableView-EnableHeaderContextFilterMenu="true" EnableLinqExpressions="False" EnableHeaderContextMenu="True">

<ClientSettings AllowRowsDragDrop="false" AllowColumnsReorder="true" Resizing-AllowColumnResize="true" ReorderColumnsOnClient="true">

<ClientEvents OnCommand="GridCommand" />

<Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="false" ScrollHeight="250"></Scrolling>

<Selecting AllowRowSelect="True" EnableDragToSelectRows="true" />

</ClientSettings>

<ExportSettings FileName="SalesOrderApprovalList" IgnorePaging="true">

<Excel Format="Biff" />

</ExportSettings>

<GroupingSettings CaseSensitive="false" />

<MasterTableView DataKeyNames="OrderID,BranchID,CustomerID,CustomerInfo,OrderDate,DeliveryDate,Address"

AllowMultiColumnSorting="True" AllowPaging="true"

ClientDataKeyNames="OrderID,BranchID,CustomerID,CustomerInfo,Address,SalesPersonID,Remark,OrderDate,DeliveryDate"

PagerStyle-PageSizes="500,1000,1500,2000" AllowFilteringByColumn="true" AutoGenerateColumns="false" ShowHeadersWhenNoRecords="true">

<Columns>

<telerik:GridButtonColumn UniqueName="Update" ButtonType="ImageButton" ImageUrl="../images/icons8-window-settings-20.png" HeaderText="Open" Text="Open" CommandName="Open">

<HeaderStyle Width="40px" />

<ItemStyle Width="40px" HorizontalAlign="Center" />

</telerik:GridButtonColumn>

<telerik:GridTemplateColumn HeaderText="No" UniqueName="RowNumber" AllowFiltering="false">

<ItemTemplate>

<asp:Label runat="server" ID="lblRowNumber" Width="50px" Text='<%# Container.DataSetIndex+1 %>'></asp:Label>

</ItemTemplate>

<ItemStyle Width="30px" />

<HeaderStyle Width="30px" />

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="Approve" HeaderStyle-Width="90px" ShowFilterIcon="false" AllowFiltering="false">

<ItemTemplate>

<div style="text-align: center;">

<telerik:RadButton ID="btnApprove" runat="server" AutoPostBack="true" Text="Approve" OnClientClicking="OnClientClicking" OnClick="btnApprove_Click">

</telerik:RadButton>

</div>

</ItemTemplate>

<ItemStyle Width="90px" />

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="BatchExpiry" AllowFiltering="false">

<ItemTemplate>

<%-- <asp:LinkButton ID="btnAddBatch" Text="Add Batch" runat="server">

</asp:LinkButton>--%>

<%-- <telerik:RadLinkButton ID="btnAddBatch" runat="server" Text="Add Batch">

</telerik:RadLinkButton>--%>

<telerik:RadButton ID="btnAddBatch" runat="server" Text="Add Batch" AutoPostBack="true" OnClick="btnAddBatch_Click"></telerik:RadButton>

</ItemTemplate>

<ItemStyle Width="45px" />

<HeaderStyle Width="45px" />

</telerik:GridTemplateColumn>

<telerik:GridBoundColumn DataField="IsReserved" AllowFiltering="true" HeaderText="Is Reserved" UniqueName="IsReserved"

ShowFilterIcon="false" FilterControlWidth="75px"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="90px" />

<ItemStyle Width="90px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="OrderID" AllowFiltering="true" HeaderText="Order ID" UniqueName="OrderID"

ShowFilterIcon="false" FilterControlWidth="100px"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="110px" />

<ItemStyle Width="110px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BranchID" AllowFiltering="false" HeaderText="Branch ID" UniqueName="BranchID"

ShowFilterIcon="false" FilterControlWidth="100px" Visible="false"

AutoPostBackOnFilter="false" CurrentFilterFunction="Contains">

<HeaderStyle Width="110px" />

<ItemStyle Width="110px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="SalesPersonName" HeaderText="Sales Person" UniqueName="SalesPersonName"

ShowFilterIcon="false" FilterControlWidth="105px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="120px" />

<ItemStyle Width="120px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="CustomerID" AllowFiltering="true" HeaderText="Customer ID" Visible="true" UniqueName="CustomerID"

ShowFilterIcon="false" FilterControlWidth="110px"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="130px" />

<ItemStyle Width="130px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="CustomerName" HeaderText="Name" UniqueName="CustomerName"

ShowFilterIcon="false" FilterControlWidth="150px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="189px" />

<ItemStyle Width="189px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="CustomerInfo" HeaderText="Customer Info" UniqueName="CustomerInfo"

ShowFilterIcon="false" FilterControlWidth="150px" AllowFiltering="false" Visible="false"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="189px" />

<ItemStyle Width="189px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Address" HeaderText="Address" UniqueName="Address"

ShowFilterIcon="false" FilterControlWidth="170px" AllowFiltering="true" Visible="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="189px" />

<ItemStyle Width="189px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Township" HeaderText="Township" UniqueName="Township"

ShowFilterIcon="false" FilterControlWidth="120px" AllowFiltering="true" Visible="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains">

<HeaderStyle Width="150px" />

<ItemStyle Width="150px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="OrderDate" AllowFiltering="false" HeaderText="Order Date" UniqueName="OrderDate"

ShowFilterIcon="false" FilterControlWidth="110px"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="DeliveryDate" AllowFiltering="false" HeaderText="Delivery Date" UniqueName="DeliveryDate"

ShowFilterIcon="false" FilterControlWidth="110px"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="DeliveryVan" AllowFiltering="true" HeaderText="Delivery Van" UniqueName="DeliveryVan"

ShowFilterIcon="false" FilterControlWidth="100px"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="110px" />

<ItemStyle Width="110px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="SalesPersonID" DataField="SalesPersonID" AllowFiltering="true" ShowFilterIcon="false" FilterControlWidth="100px"

HeaderText="SalesPerson ID" Visible="false" CurrentFilterFunction="Contains" AutoPostBackOnFilter="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Remark" HeaderText="Remark" UniqueName="Remark"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="104px" />

<ItemStyle Width="104px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="SyncDateTime" HeaderText="Sync Date" UniqueName="SyncDateTime"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="false"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ExportDateTime" HeaderText="Export Date" UniqueName="ExportDateTime"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="false"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ExportStatus" HeaderText="Export Status" UniqueName="ExportStatus"

ShowFilterIcon="false" FilterControlWidth="75px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ExportRemark" HeaderText="Export Remark" UniqueName="ExportRemark"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="104px" />

<ItemStyle Width="104px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ApprovedBy" HeaderText="Approved By" UniqueName="ApprovedBy"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="104px" />

<ItemStyle Width="104px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="ApprovedDate" HeaderText="Approved Date" UniqueName="ApprovedDate"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="false"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="RejectedBy" HeaderText="Rejected By" UniqueName="RejectedBy"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="true"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="104px" />

<ItemStyle Width="104px" />

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="RejectedDate" HeaderText="Rejected Date" UniqueName="RejectedDate"

ShowFilterIcon="false" FilterControlWidth="84px" AllowFiltering="false"

AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" >

<HeaderStyle Width="85px" />

<ItemStyle Width="85px" />

</telerik:GridBoundColumn>

<%--<telerik:GridBoundColumn DataField="DeliveryStatus" HeaderText="Status" UniqueName="Status" Visible="false"

ShowFilterIcon="false" FilterControlWidth="170px" AllowFiltering="true" AutoPostBackOnFilter="true">

<HeaderStyle Width="50px" />

<ItemStyle Width="50px" />

</telerik:GridBoundColumn>--%>

</Columns>

<PagerStyle AlwaysVisible="True"></PagerStyle>

<GroupFooterTemplate>

</GroupFooterTemplate>

</MasterTableView>

<PagerStyle UseRouting="True" Mode="NumericPages" ShowPagerText="False" />

</telerik:RadGrid>

2 Answers, 1 is accepted

Accepted

answered on 30 Jan 2020, 11:51 AM

Hi Nelson,

Here are some suggestions that may help you resolve the issue:

1. This probably happens because the controls are not generated during the exporting action. You can manually try to add the text during exporting as demonstrated in this section:
https://docs.telerik.com/devtools/aspnet-ajax/controls/grid/functionality/exporting/overview#export-template-columns

2. You can also try enabling the following property:

        <telerik:RadGrid ... >
            <ExportSettings IgnorePaging="true">
            </ExportSettings>
        </telerik:RadGrid>

3. You can wrap the btnApprove logic inside an if statement as follows:

if (!RadGrid1.IsExporting){ ... }

I hope this will prove helpful.

Regards,
Eyup
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