how to make gridveiw show the all data column within templated fields?

Hi.
I have a project in Asp.net that someone insert data into DB(Sqlserver) and when he wants to recall the latest inserted data(for this item i have written a strored procedure so i will use it in gridview) he has to press a button that a gridview to show them all.

in the gridview i would like to add my own template(because i have some items as well as Jquery Calendar which has to be added by myself) and bind it to server and select stored procedure to read it.so the code i have to read data from DB is in below:

protected void Button2_Click(object sender, EventArgs e) 
    { 
        SqlDataReader dr = DataProvider.ExecuteDataReader("[dbo].[Get_LastIdHowzeEducationFinishDate_SP]", CommandType.StoredProcedure); 
        GridView1.DataSource = dr; 
 
 
        SqlDataReader dr2 = DataProvider.ExecuteDataReader("[dbo].[Get_LastIdHowzeEducationField_SP]", CommandType.StoredProcedure); 
        GridView1.DataSource = dr2; 
        GridView1.DataBind(); 
    } 

but i don't know why only one of them is shown (the second one )meanwhile i want to show some other data column inside gridview.

Tags: ASP.NET4.0