Each GridTableView has a property NoRecordsTemplate. This property defines a template that will be displayed if there are no records in the assigned DataSource.
There are cases in which you may want to show an empty grid rather than this template. There is a boolean property EnableNoRecordsTemplate which defines whether GridTableView will use the defined NoRecordsTemplate or not.
The NoRecordsTemplate should be populated for each detail table (in case of hierarchical grids) in the DetailTableDataBind event.
You can control the visibility of the table/NoRecordsTemplate controls by using corresponding Controls(0), Controls(1) of each GridTableView. This should happen after it was data-bound.
| ASPX/ASCX |
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|
<rad:radgrid id="RadGrid1" runat="server">
<MasterTableView>
<NoRecordsTemplate>
<div>There are no records to display</div>
</NoRecordsTemplate>
</MasterTableView>
</rad:radgrid> |
Define NoRecordsTemplate programmatically
You need to design your custom class (holding the set of controls for the
NoRecordsTemplate) which implements the
ITemplate interface. Then you can assign an instance of this class to the
NoRecordsTemplate of the corresponding
GridTableView.
The example below shows how to embed MS Label in the NoRecordsTemplate of the MasterTableView at runtime:
| C# |
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using Telerik.WebControls;
using System.Web.UI;
protected RadGrid RadGrid1;
public class MyNoRecordsTemplate : ITemplate
{
Label NoRecordsLabel;
void System.Web.UI.ITemplate.InstantiateIn(System.Web.UI.Control container)
{
NoRecordsLabel = new Label();
NoRecordsLabel.ID = "NoRecordsLabel";
NoRecordsLabel.BackColor = System.Drawing.Color.Orange;
NoRecordsLabel.BorderWidth = Unit.Pixel(1);
NoRecordsLabel.BorderColor = System.Drawing.Color.Brown;
NoRecordsLabel.Text = "No data to display";
container.Controls.Add(NoRecordsLabel);
}
}
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
PopulateGrid1OnPageInit();
}
protected void PopulateGrid1OnPageInit()
{
RadGrid RadGrid1 = new RadGrid();
RadGrid1.ID = "RadGrid1";
RadGrid1.MasterTableView.AutoGenerateColumns = false;
RadGrid1.DataSource = new Object [0];
RadGrid1.EnableAJAX = true;
RadGrid1.MasterTableView.AllowPaging = true;
RadGrid1.MasterTableView.NoRecordsTemplate = new MyNoRecordsTemplate();
RadGrid1.PagerStyle.Mode = GridPagerMode.NumericPages;
RadGrid1.AllowSorting = true;
//runtime column definitions
} |
| VB.NET |
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Imports Telerik.WebControls
Imports System.Web.UI
Public Class NoRecordsTemplate
Implements ITemplate
Public Sub InstantiateIn(ByVal container As System.Web.UI.Control) Implements System.Web.UI.ITemplate.InstantiateIn
Dim NoRecordsLabel As New Label()
With NoRecordsLabel
.ID = "NoRecordsLabel"
.BackColor = System.Drawing.Color.Orange
.BorderWidth = Unit.Pixel(1)
.BorderColor = System.Drawing.Color.Brown
.Text = "No data to display"
End With
container.Controls.Add(NoRecordsLabel)
End Sub
End Class
Protected Overloads Overrides Sub OnInit(ByVal e As EventArgs) Handles MyBase.OnInit
MyBase.OnInit(e)
PopulateGrid1OnPageInit()
End Sub
Protected Sub PopulateGrid1OnPageInit()
Dim RadGrid1 As New RadGrid()
RadGrid1.ID = "RadGrid1"
RadGrid1.MasterTableView.AutoGenerateColumns = False
RadGrid1.DataSource = new Object() {}
RadGrid1.EnableAJAX = True
RadGrid1.MasterTableView.AllowPaging = True
RadGrid1.MasterTableView.NoRecordsTemplate = New MyNoRecordsTemplate()
RadGrid1.PagerStyle.Mode = GridPagerMode.NumericPages
RadGrid1.AllowSorting = True
End Sub |
Detailed information about how to create templates programmatically you can find in the MSDN:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vstechart/html/vbtchcreatingwebservercontroltemplatesprogrammatically.asp