如何在c#后面的代码中添加带有objectdatasource的gridview？

我想用代码创建gridview.我的代码是:

 GridView gdvList = new GridView();
 gdvList.ID = "gdvList" ;
 TemplateField tField = new TemplateField();
 BoundField dateBF = new BoundField();
 dateBF.DataField = "Date";
 gdvList.Columns.Add(dateBF);
 BoundField countResponse = new BoundField();
 countResponse.DataField = "CountResponse";
 gdvList.Columns.Add(countResponse);
 ObjectDataSource ods = new ObjectDataSource();
 ods.ID = "ods";
 ods.TypeName = "Project.BLLQuestion";
 ods.SelectMethod = "GetByGroupID";
 ods.SelectParameters["GroupID"] = new Parameter("inGroupID", DbType.Int32, "0");
 ods.DataBind();
 gdvList.DataSource = ods;
 gdvList.DataBind();    

此代码不起作用,以及如何添加TemplateField:

    
         "><%# Eval("Content").ToString().PadRight(140).Substring(0,140).TrimEnd()+"..." %>
    

怎么办呢？