How to Handle Double Click Event in a ASP.NET ListBox Control

This article describes how to handle double click event in ASP.NET List control.

Generally, you cannot handle Server side double click event in a ASP.NET List control. But it can be achieved by some workaround methods.

The following steps explain a work around solution:


1. Add a button control and hide it using styles

eg:


2. Add the following code in Page_Load Event

    if(!PostBack)
    {
             String postBackReferenceForListBox = 
               this.Page.GetPostBackClientEvent(btnForListBoxDoubleClick,  "dblClickfromHiddenButton");
 
           ListBox1.Attributes.Add("ondblclick",  postBackReferenceForListBox);
     }
 
  

  private void btnForListBoxDoubleClick_ServerClick(object sender, System.EventArgs e)
  {
         string argument = Request.Params["__EVENTARGUMENT"].Trim();
 
          if(argument == "dblClickfromHiddenButton")
              {
    
                   // logic to process the selected item from listbox goes here
               }
       }