Pass multiple parameters query string run time in Data Control

How can we pass multiple query string values to query string run time in data control(Grid View,Repeater).
We need to simply create one function that will make URL run time.
Here is small example: 

On aspx page:
<a href="<%# MakeURL( Eval("PID"),Eval("UID") ) %>"/></a>

On CS page:
public string MakeURL(object PID, object UID)
{
   return "NewPage.aspx?PID=" + PID.ToString()  + "&UID=" + UID.ToString();
}

That’s It.
Enjoy Learning.