# 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.

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

![button-single-click](https://www.telerik.com/products/aspnet-ajax/documentation/assets/067c51a33b8864d60e54700e4c7fabac/button-single-click.png)

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.

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

```ASP.NET
<asp:TextBox ID="txtName" runat="server" />

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

<asp:Label ID="lblGreeting" runat="server" />
```

```C#
protected void btnSubmit_Click(object sender, EventArgs e)
{
	if (Page.IsPostBack) System.Threading.Thread.Sleep(3000);
	lblGreeting.Text = String.Format("Hello, {0}!", txtName.Text);
}
```

```VB
Protected Sub btnSubmit_Click(sender As Object, e As System.EventArgs) Handles btnSubmit.Click
	If Page.IsPostBack Then
		System.Threading.Thread.Sleep(3000)
	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

* [Single Click Button Demo](https://demos.telerik.com/aspnet-ajax/pushbutton/examples/singleclick/defaultcs.aspx)