datagridview in c#.net

For binding the datagridview need a datatable or dataset.
You can add the 2 variable values into a datatable and then bind the same with datagridview

Creating a datatable with two fileds the id and value

DataTable aTable = new DataTable("TableName");
               aTable.Columns.Add("ID", typeof(int));
               aTable.Columns.Add("VarValue", typeof(string));
               DataRow dr;
               dr = aTable.NewRow();
               dr["ID"] = 1;
               dr["VarValue"] = "Variable1 Value";
               aTable.Rows.Add(dr);

               dr = aTable.NewRow();
               dr["ID"] = 2;
               dr["VarValue"] = "Variable2 Value";
               aTable.Rows.Add(dr);

Now you need to bind the data table with the gird-view

GridView1.DataSource = aTable;
     GridView1.DataBind();

Hope this will help you :)