New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Single Click

The single click button (Figure 1) is used to avoid multiple postbacks to the server. This feature is useful in database and/or e-mail send scenarios when the developer should prevent submitting of identical content multiple times to the server.

Figure 1: RadPushButton with SingeClick functionality before and after click.


The following properties should be used to enable the single click functionality:

  • SingleClick - determines whether the RadPushButton control will be immediately disabled after the user clicks it. Set it to true to enable the single click functionality.

  • SingleClickText - determines the text displayed in the RadPushButton control after the button is being clicked and disabled. The original text will be retrieved after the server request execution. The property takes a plain text string.

Example 1: The code that enables the single click functionality in RadPushButton from Figure 1.

<asp:TextBox ID="txtName" runat="server" />

<telerik:RadPushButton ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click"
    SingleClick="true" SingleClickText="Processing...">

<asp:Label ID="lblGreeting" runat="server" />
protected void btnSubmit_Click(object sender, EventArgs e)
    if (Page.IsPostBack) System.Threading.Thread.Sleep(3000);
    lblGreeting.Text = String.Format("Hello, {0}!", txtName.Text);
Protected Sub btnSubmit_Click(sender As Object, e As System.EventArgs) Handles btnSubmit.Click
    If Page.IsPostBack Then
    End If
    lblGreeting.Text = String.Format("Hello, {0}!", txtName.Text)
End Sub

The submitted text in processed on the server-side. Note that the method System.Threading.Thread.Sleep is used so that the disabled button can be examined after clicking it.

See Also

In this article
Not finding the help you need? Improve this article