Call JavaScript function with CommandField in ASP.Net GridView

Here Mudassar Ahmed Khan has explained with an example, how to call JavaScript function with CommandField in ASP.Net GridView using C# and VB.Net. Inside the RowDataBound event handler, the Button will be referenced and then JavaScript function will be assigned to its Client Side OnClick event handler. Thus when the CommandField Button is clicked, the JavaScript function will be called in ASP.Net using C# and VB.Net.