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Export multiple Grids in single PDF/Excel file

Environment

Product Telerik WebForms Grid for ASP.NET AJAX

Description

Sometimes, one might want to export multiple Grids to either PDF of Excel.

Solution

This article illustrates how to export multiple Grid controls into single Excel/PDF file by using another Grid to wrap the contents. Please notice the ExportOnlyData="false" property, intentionally set on the wrapper to ensure that the nested controls will be exported.

Export to Excel: 

<div style="background-color: #999999; padding: 10px; width: 550px">
    <div style="padding: 10px; background-color: White;">
        <telerik:RadComboBox ID="RadComboBox1" runat="server" Skin="Vista" AutoPostBack="false"
            BorderStyle="None">
            <Items>
                <telerik:RadComboBoxItem Text="RadGrid1" />
                <telerik:RadComboBoxItem Text="RadGrid2" />
                <telerik:RadComboBoxItem Text="RadGrid3" />
                <telerik:RadComboBoxItem Text="All RadGrids" />
            </Items>
        </telerik:RadComboBox>
        <asp:ImageButton ID="ImageButton1" runat="server" AlternateText="Export to Excel"
            CssClass="imButton" ImageUrl="~/Images/Excel.jpg" OnClick="ImageButton1_Click" />
    </div>
    <telerik:RadGrid ID="RadGridWrapper" runat="server" ShowHeader="false" BorderStyle="None"
        Width="550px">
        <ExportSettings OpenInNewWindow="true" />
        <MasterTableView AutoGenerateColumns="true">
            <ItemTemplate>
                <telerik:RadGrid ID="RadGrid1" runat="server" OnNeedDataSource="RadGrid_NeedDataSource"
                    BorderStyle="None" Skin="Office2007">
                    <ExportSettings ExportOnlyData="true" OpenInNewWindow="true" />
                    <MasterTableView AutoGenerateColumns="false">
                        <Columns>
                            <telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID" />
                            <telerik:GridBoundColumn DataField="Number" HeaderText="Number" UniqueName="Number" />
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>
                <br />
                <telerik:RadGrid ID="RadGrid2" runat="server" OnNeedDataSource="RadGrid_NeedDataSource"
                    BorderStyle="None" Skin="Office2007">
                    <ExportSettings ExportOnlyData="true" OpenInNewWindow="true" />
                    <MasterTableView AutoGenerateColumns="false">
                        <Columns>
                            <telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID" />
                            <telerik:GridBoundColumn DataField="Number" HeaderText="Number" UniqueName="Number" />
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>
                <br />
                <telerik:RadGrid ID="RadGrid3" runat="server" OnNeedDataSource="RadGrid_NeedDataSource"
                    BorderStyle="None" Skin="Office2007">
                    <ExportSettings ExportOnlyData="true" OpenInNewWindow="true" />
                    <MasterTableView AutoGenerateColumns="false">
                        <Columns>
                            <telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID" />
                            <telerik:GridBoundColumn DataField="Number" HeaderText="Number" UniqueName="Number" />
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>
            </ItemTemplate>
        </MasterTableView>
    </telerik:RadGrid>
</div>

protected void Page_Load(object sender, EventArgs e)
{
    RadGridWrapper.DataSource = new string[] { " " };
}

protected void RadGrid_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
    DataTable table = new DataTable();

    table.Columns.Add("ID", typeof(int));
    table.Columns.Add("Number", typeof(int));

    for (int i = 0; i < 5; i++) 
    {
        table.Rows.Add(i + 1, DateTime.Now.Millisecond);
    }

    System.Threading.Thread.Sleep(15); 

    (source as RadGrid).DataSource = table;
}

protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
    RadGrid radGrid = RadComboBox1.SelectedItem.Text == "All RadGrids" ? RadGridWrapper : (RadGrid)RadGridWrapper.Items[0].FindControl(RadComboBox1.SelectedItem.Text);
    radGrid.MasterTableView.ExportToExcel();
}

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    RadGridWrapper.DataSource = New String() {" "}
End Sub

Protected Sub RadGrid_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs)
    Dim table As DataTable = New DataTable()

    table.Columns.Add("ID", GetType(Integer))
    table.Columns.Add("Number", GetType(Integer))

    For i As Integer = 0 To 5 - 1
        table.Rows.Add(i + 1, DateTime.Now.Millisecond)
    Next

    System.Threading.Thread.Sleep(15)

    (TryCast(source, RadGrid)).DataSource = table
End Sub

Protected Sub ImageButton1_Click(ByVal sender As Object, ByVal e As ImageClickEventArgs)
    Dim radGrid As RadGrid = If(RadComboBox1.SelectedItem.Text = "All RadGrids", RadGridWrapper, CType(RadGridWrapper.Items(0).FindControl(RadComboBox1.SelectedItem.Text), RadGrid))
    radGrid.MasterTableView.ExportToExcel()
End Sub

Export to PDF: 

<div style="background-color: #999999; padding: 10px; width: 550px">
    <div style="padding: 10px; background-color: White;">
        <telerik:RadComboBox ID="RadComboBox1" runat="server" Skin="Vista" AutoPostBack="false"
            BorderStyle="None">
            <Items>
                <telerik:RadComboBoxItem Text="RadGrid1" />
                <telerik:RadComboBoxItem Text="RadGrid2" />
                <telerik:RadComboBoxItem Text="RadGrid3" />
                <telerik:RadComboBoxItem Text="All RadGrids" />
            </Items>
        </telerik:RadComboBox>
        <asp:ImageButton ID="ImageButton1" runat="server" AlternateText="Export to Excel"
            CssClass="imButton" ImageUrl="~/Images/Pdf.jpg" OnClick="ImageButton1_Click" />
    </div>
    <telerik:RadGrid ID="RadGridWrapper" runat="server" ShowHeader="false" Width="550px"
        BorderStyle="None" OnItemCreated="RadGridWrapper_ItemCreated">
        <ExportSettings OpenInNewWindow="true" />
        <MasterTableView AutoGenerateColumns="true" BorderStyle="None">
            <ItemTemplate>
                <telerik:RadGrid ID="RadGrid1" runat="server" OnNeedDataSource="RadGrid_NeedDataSource"
                    BorderStyle="None" Skin="Office2007">
                    <ExportSettings ExportOnlyData="true" OpenInNewWindow="true" />
                    <MasterTableView AutoGenerateColumns="false">
                        <Columns>
                            <telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID" />
                            <telerik:GridBoundColumn DataField="Number" HeaderText="Number" UniqueName="Number" />
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>
                <br />
                <telerik:RadGrid ID="RadGrid2" runat="server" OnNeedDataSource="RadGrid_NeedDataSource"
                    BorderStyle="None" Skin="Office2007">
                    <ExportSettings ExportOnlyData="true" OpenInNewWindow="true" />
                    <MasterTableView AutoGenerateColumns="false">
                        <Columns>
                            <telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID" />
                            <telerik:GridBoundColumn DataField="Number" HeaderText="Number" UniqueName="Number" />
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>
                <br />
                <telerik:RadGrid ID="RadGrid3" runat="server" OnNeedDataSource="RadGrid_NeedDataSource"
                    BorderStyle="None" Skin="Office2007">
                    <ExportSettings ExportOnlyData="true" OpenInNewWindow="true" />
                    <MasterTableView AutoGenerateColumns="false">
                        <Columns>
                            <telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID" />
                            <telerik:GridBoundColumn DataField="Number" HeaderText="Number" UniqueName="Number" />
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>
            </ItemTemplate>
        </MasterTableView>
    </telerik:RadGrid>
</div>

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack) 
    {
        RadGridWrapper.DataSource = new string[] { " " };
    }
}

protected void RadGridWrapper_ItemCreated(object sender, GridItemEventArgs e)
{
    if (e.Item is GridHeaderItem)
    {
        e.Item.Visible = false;
    }
}

protected void RadGrid_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
    DataTable table = new DataTable();

    table.Columns.Add("ID", typeof(int));
    table.Columns.Add("Number", typeof(int));

    for (int i = 0; i < 5; i++)
    {
        table.Rows.Add(i + 1, DateTime.Now.Millisecond);
    }

    System.Threading.Thread.Sleep(15);

    (source as RadGrid).DataSource = table;
}

protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
    RadGrid radGrid = RadComboBox1.SelectedItem.Text == "All RadGrids" ? RadGridWrapper : (RadGrid)RadGridWrapper.Items[0].FindControl(RadComboBox1.SelectedItem.Text);
    radGrid.MasterTableView.ExportToPdf();
}

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        RadGridWrapper.DataSource = New String() {" "}
    End If
End Sub

Protected Sub RadGridWrapper_ItemCreated(ByVal sender As Object, ByVal e As GridItemEventArgs)
    If TypeOf e.Item Is GridHeaderItem Then
        e.Item.Visible = False
    End If
End Sub

Protected Sub RadGrid_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs)
    Dim table As DataTable = New DataTable()
    table.Columns.Add("ID", GetType(Integer))
    table.Columns.Add("Number", GetType(Integer))

    For i As Integer = 0 To 5 - 1
        table.Rows.Add(i + 1, DateTime.Now.Millisecond)
    Next

    System.Threading.Thread.Sleep(15)
    CType(source, RadGrid).DataSource = table
End Sub

Protected Sub ImageButton1_Click(ByVal sender As Object, ByVal e As ImageClickEventArgs)
    Dim radGrid As RadGrid = If(RadComboBox1.SelectedItem.Text = "All RadGrids", RadGridWrapper, CType(RadGridWrapper.Items(0).FindControl(RadComboBox1.SelectedItem.Text), RadGrid))
    radGrid.MasterTableView.ExportToPdf()
End Sub
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