GridTemplateColumn HeaderTemplate

[archimede]

I have the following grid:

<telerik:RadGrid ID="RadGridAziendeForUser" runat="server" DataSourceID="ObjectDataSourceAziendeUtente"
                EnableEmbeddedSkins="False" GridLines="None" Skin="MachinaWeb" AllowAutomaticUpdates="True"
                AllowAutomaticDeletes="True" AllowAutomaticInserts="True" AllowMultiRowSelection="True"
                AutoGenerateEditColumn="True"
                OnItemCommand="RadGridAziendeForUser_ItemCommand">
                <ClientSettings EnablePostBackOnRowClick="True">
                    <Selecting AllowRowSelect="True" />
                    <Scrolling EnableVirtualScrollPaging="True" ScrollHeight="200px" />
                </ClientSettings>
                <MasterTableView AutoGenerateColumns="False" DataSourceID="ObjectDataSourceAziendeUtente"
                    EditMode="InPlace" CommandItemDisplay="Top" DataKeyNames="IdUtente,IdAzienda">
                    <CommandItemTemplate>
                        <div style="float: left;">
                            <asp:LinkButton Text="Nuova Azienda" ID="Insert" runat="server" CommandName="InitInsert" />
                        </div>
                    </CommandItemTemplate>
                    <RowIndicatorColumn>
                        <HeaderStyle Width="20px" />
                    </RowIndicatorColumn>
                    <ExpandCollapseColumn>
                        <HeaderStyle Width="20px" />
                    </ExpandCollapseColumn>
                    <Columns>
                        <telerik:GridBoundColumn DataField="IdUtente" DataType="System.Int64" HeaderText="IdUtente"
                            ReadOnly="True" SortExpression="IdUtente" UniqueName="IdUtente" Visible="false">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="IdUtenteAsp" HeaderText="IdUtenteAsp" SortExpression="IdUtenteAsp"
                            UniqueName="IdUtenteAsp" DataType="System.Guid" Visible="false">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="UserName" HeaderText="UserName" ReadOnly="True"
                            SortExpression="UserName" UniqueName="UserName" Visible="false">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="IdCultura" DataType="System.Int64" HeaderText="IdCultura"
                            ReadOnly="True" SortExpression="IdCultura" UniqueName="IdCultura" Visible="false">
                        </telerik:GridBoundColumn>
                        <telerik:GridTemplateColumn>
                            <HeaderTemplate>
                                <asp:Label ID="Label46" runat="server" Text="Azienda"></asp:Label>
                            </HeaderTemplate>
                            <EditItemTemplate>
                                <telerik:RadComboBox ID="AziendaRadComboBox" runat="server" DataSourceID="ObjectDataSourceAzienda"
                                    DataTextField="NomeAzienda" DataValueField="IdAzienda" SelectedValue='<%# Bind("IdAzienda") %>'
                                    Width="120px" />
                            </EditItemTemplate>
                            <ItemTemplate>
                                <asp:Label ID="Label47" runat="server" Width="120px" Text='<%# Bind("Azienda") %>'></asp:Label>
                            </ItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn>
                            <HeaderTemplate>
                                <asp:Label ID="Label48" runat="server" Text="Cultura"></asp:Label>
                            </HeaderTemplate>
                            <EditItemTemplate>
                                <telerik:RadComboBox ID="CulturaRadComboBox" runat="server" DataSourceID="ObjectDataSourceCultura"
                                    DataTextField="Cultura" DataValueField="IdCultura" SelectedValue='<%# Bind("IdCultura") %>'
                                    Width="70px" />
                            </EditItemTemplate>
                            <ItemTemplate>
                                <asp:Label ID="Label50" runat="server" Width="70px" Text='<%# Bind("Cultura") %>'></asp:Label>
                            </ItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn>
                            <HeaderTemplate>
                                <asp:Label ID="Label49" runat="server" Text="Gruppo"></asp:Label>
                            </HeaderTemplate>
                            <EditItemTemplate>
                                <telerik:RadComboBox ID="GruppoRadComboBox" runat="server" DataSourceID="ObjectDataSourceGruppoUtente"
                                    DataTextField="Nome" DataValueField="IdGruppoUtente" SelectedValue='<%# Bind("IdGruppo") %>'
                                    Width="120px" />
                            </EditItemTemplate>
                            <ItemTemplate>
                                <asp:Label ID="Label51" runat="server" Text='<%# Bind("Gruppo") %>'></asp:Label>
                            </ItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn>
                            <HeaderTemplate>
                                <asp:Label ID="Label52" runat="server" Text="Stabilimento"></asp:Label>
                            </HeaderTemplate>
                            <EditItemTemplate>
                                <telerik:RadComboBox ID="StabilimentoRadComboBox" runat="server" DataSourceID="ObjectDataSourceStabilimento"
                                    DataTextField="Denominazione" DataValueField="IdStabilimento" SelectedValue='<%# Bind("IdStabilimento") %>'
                                    Width="120px" />
                            </EditItemTemplate>
                            <ItemTemplate>
                                <asp:Label ID="Label53" runat="server" Text='<%# Bind("Stabilimento") %>'></asp:Label>
                            </ItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn>
                            <HeaderTemplate>
                                <asp:Label ID="Label54" runat="server" Text="Reparto"></asp:Label>
                            </HeaderTemplate>
                            <EditItemTemplate>
                                <telerik:RadComboBox ID="RepartoRadComboBox" runat="server" DataSourceID="ObjectDataSourceReparto"
                                    DataTextField="Reparto" DataValueField="IdReparto" SelectedValue='<%# Bind("IdReparto") %>'
                                    Width="120px" />
                            </EditItemTemplate>
                            <ItemTemplate>
                                <asp:Label ID="Label55" runat="server" Text='<%# Bind("Settore") %>'></asp:Label>
                            </ItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridButtonColumn CommandName="Delete" Text="Delete" UniqueName="DeleteColumn"
                            ConfirmText="Do you really want to delete the selected row?" />
                    </Columns>
                    <EditFormSettings>
                        <EditColumn>
                        </EditColumn>
                    </EditFormSettings>
                </MasterTableView><FilterMenu EnableEmbeddedSkins="False">
                </FilterMenu>
                <HeaderContextMenu EnableEmbeddedSkins="False">
                </HeaderContextMenu>
            </telerik:RadGrid>

I want to access by code the GridTemplateColumn's HeaderTemplate Labels (for example "Label46") to change the Text property. How can I do this in C#?

Thanks.

[Princy]

Hello Archimede,

You can try the following code snippet to access the Label inside HeaderTemplate of GridTemplateColumn.

C#:

 protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridHeaderItem)
        {
            GridHeaderItem headerItem = (GridHeaderItem)e.Item;
            Label lb = (Label)headerItem.FindControl("Label46");  //access Label inside HeaderTemplate
            lb.Text = "new header";
        }
    }

Thanks,
Princy.

[archimede]

If possible I'd like to make that not in ItemDataBound event (done only one time) for example on RadGrid Init, PreRender or something like that. Is it possible?

[Princy]

Hello Archimede,

 You can achieve the same in PreRender event .

C#:

 protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        GridHeaderItem headerItem = (GridHeaderItem)RadGrid1.MasterTableView.GetItems(GridItemType.Header)[0];
        Label lb = (Label)headerItem.FindControl("Label46");  //access Label inside HeaderTemplate
        lb.Text = "new header";
    }

Thanks,
Princy.

[Carlos]

Excellent solution!
Thank you!! :)