Server-side Data Binding Overview
The article shows how to set up RadRadioButtonList with data binding.
RadRadioButtonList can use the standard data sources for binding an ASP.NET control:
- Declarative ASP.NET data sources (SqlDatasource, ObjectDataSource, LinqDataSource, etc.)
- Server-side collections that implement the IEnumerable interface.
Server-side Data Binding Basics
RadRadioButtonList exposes the Databindings composite property to configure the fields needed for data binding:
- DataTextField binds the
Textproperty of the items with the corresponding field. - DataValueField binds the
Valueproperty of the items with the corresponding field. - DataSelectedField binds the
Selectedproperty of the items with the corresponding field. - DataEnabledField binds the
Enabledproperty of the items with the corresponding field.
Example 1: Data binding RadRadioButtonList with a collection in the code behind.
<telerik:RadRadioButtonList runat="server" ID="RadRadioButtonList1">
<Databindings DataTextField="Text" DataValueField="Value"
DataSelectedField="Selected" DataEnabledField="Enabled" />
</telerik:RadRadioButtonList>
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
RadRadioButtonList1.DataSource = GetData();
RadRadioButtonList1.DataBind();
}
}
private IEnumerable<object> GetData()
{
List<object> result = new List<object>() {
new { Text = "English", Value = "en",
Selected = true, Enabled = true },
new { Text = "German", Value = "de",
Selected = false, Enabled = true },
new { Text = "french", Value = "fr",
Selected = false, Enabled = true }
};
return result;
}
Protected Sub Page_Load(sender As Object, e As EventArgs)
If Not Page.IsPostBack Then
RadRadioButtonList1.DataSource = GetData()
RadRadioButtonList1.DataBind()
End If
End Sub
Private Function GetData() As IEnumerable(Of Object)
Dim result As New List(Of Object)() From { _
New With { _
Key .Text = "English", _
Key .Value = "en", _
Key .Selected = True, _
Key .Enabled = True _
}, _
New With { _
Key .Text = "German", _
Key .Value = "de", _
Key .Selected = False, _
Key .Enabled = True _
}, _
New With { _
Key .Text = "french", _
Key .Value = "fr", _
Key .Selected = False, _
Key .Enabled = True _
} _
}
Return result
End Function