RadControls for ASP.NET AJAX Often, when you use item templates, you want the controls in the template to display information associated with the tool button properties. For example, consider a simple toolbar with a text box in one item template and a check box in another:
CopyASPX
<telerik:RadToolBar ID="RadToolBar1" runat="server">
<Items>
<telerik:RadToolBarButton runat="server" Text="Button 1" Value="TextBox1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" />
</ItemTemplate>
</telerik:RadToolBarButton>
<telerik:RadToolBarButton runat="server" Text="Button 2">
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" />
</ItemTemplate>
</telerik:RadToolBarButton>
</Items>
</telerik:RadToolBar>When you run the application, the button templates display as an empty text box and an unlabelled check box:
CopyASPX
<telerik:RadToolBar ID="RadToolBar1" runat="server">
<Items>
<telerik:RadToolBarButton runat="server" Text="Button 1" Value="TextBox1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" Text='<%# DataBinder.Eval(Container, "Value") %>' runat="server" />
</ItemTemplate>
</telerik:RadToolBarButton>
<telerik:RadToolBarButton runat="server" Text="Button 2">
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" Text='<%# DataBinder.Eval(Container, "Text") %>' runat="server" />
</ItemTemplate>
</telerik:RadToolBarButton>
</Items>
</telerik:RadToolBar>In the DataBinder.Eval statement, Container is the RadToolBarButton and "Value" or "Text" identifies the Value or Text property of that item.
 Note |
|---|
In this example, the first parameter to the DataBinder.Eval statement is Container, because the items are statically bound. If the toolbar was bound to a data source, then you must use Container.DataItem instead. e.g. <%# DataBinder.Eval(Container.DataItem, "TextField") %> |
In addition to adding a DataBinder.Eval statement, you must also explicitly call the DataBind method for the items so that the template has access to the properties of the button:
CopyC#
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
for (int i = 0; i < RadToolBar1.Items.Count; i++)
{
RadToolBar1.Items[i].DataBind();
}
}
}CopyVB.NET
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not IsPostBack Then
Dim i As Integer = 0
While i < RadToolBar1.Items.Count
RadToolBar1.Items(i).DataBind()
i = i + 1
End While
End If
End SubNow the template controls reflect the properties of the underlying toolbar buttons:
See Also