Update DataSource

[Deivison Julio]

How do I update a datasource for a listbox via code by clicking on a button? Something like ListBox.DataSource.Update (), Listbox.ResetBind (), do not know ... 

[Princy]

Hi Deivison Julio,

You can use DataBind method while binding at Runtime as follows.

ASPX:

<telerik:RadListBox ID="RadListBox1" runat="server">
</telerik:RadListBox>
<asp:Button ID="Button1"  runat="server" onclick="Button1_Click" />
<asp:SqlDataSource ID="SqlDataSource2" runat="server"  SelectCommand="SELECT EmployeeID FROM [Employees]" ConnectionString= "<%$ ConnectionStrings:NorthwindConnectionString %>">
</asp:SqlDataSource>

C#:

protected void Button1_Click(object sender, EventArgs e)
   {
       RadListBox1.DataSourceID = "SqlDataSource1";
       RadListBox1.DataTextField = "EmployeeID";
       RadListBox1.DataValueField = "EmployeeID";
       RadListBox1.DataBind();
   }

For more information please take a look into this.

Thanks,
Princy.