bind grid to interface-type cast class get class properties when creating template fields

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C#

ASP.NET

I have 3 categories as classes
Service with 8 properties or columns to show in gridview -all label
Employee with 5 properties or columns to show-one column has check box
Product with 7 properties or columns to show-one column has radio button

Need to display in grid in webpages. one web page for each category
Instead of creating 3 grids -to show them(which I am doing right now). I would like to create a single grid in usercontrol. At runtime bind to classes based on category, create template fields and bind it. How do I do it?

Right now -
I have 3 classes inherit from a interface

In the usercontrol-I have a property list<interface>listIGS. Based on the category, I want to type cast this listIGS to the class, create the templatefields and add to grid and display.

How do I do it? --sample code. stuck in the line where I iterate through the list and get the properties name to create the template field. Please help!!

public static List<igridclassinterfacecs> listIGS;
public string Category = "Service";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Category == "Service")
{
MeetingServices ms = new MeetingServices();
listIGS = ms.getList();
}
foreach (var prop in listIGS[0].GetType().GetProperties())//how to I //typecast the interface to class and iterate
//through the properties of interface and create the templates?
{
}
TableGridView.DataSource = listIGS.ToArray();
TableGridView.DataBind();


}
}