Supress Postback on an ASP.NET ImageButton

If you are looking to suppress a postback on an imagebutton, then the following code should be helpful:

ASP.NET Image Button

Using MarkUp - Observe the onClientClick event



runat="server" OnClientClick="return false;" />

Using Code Behind:

C#


protected void Page_Load(object sender, EventArgs e)


{


btnShow.Attributes.Add("onclick", "return false;");


}




VB.NET


Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)


btnShow.Attributes.Add("onclick", "return false;")


End Sub

HTML Image Button

To prevent postback on an HTML Image button, use the following tag:



onclick="return false;" src="Images/Show.gif" />