Apply Bootstrap glyphicon to dynamically generated Button using C# and VB.Net in ASP.Net

Hi IamAzhar,

You have to use LinkButton instead of Button. 

Check this example. Now please take its reference and correct your code.

Code

C#

LinkButton lnkLike = new LinkButton();
lnkLike.ID = "lnkLike";
lnkLike.CssClass = "btn btn-success glyphicon glyphicon-thumbs-up";
form1.Controls.Add(lnkLike);

VB.Net

Dim lnkLike As LinkButton = New LinkButton()
lnkLike.ID = "lnkLike"
lnkLike.CssClass = "btn btn-success glyphicon glyphicon-thumbs-up"
form1.Controls.Add(lnkLike)