my DataGrid DOESNT display the data?

Question

Hi friend,
Here my code to create a data table. I must display the columns at form load and even when there is no data so that the user knows what to expect in the dataGridView control... so i have designed the columns for that dataGridView from designer and i have aslo designer the columns for the DataTable from code:
here is my code:

 
private void Form1_Load(object sender, EventArgs e)
{
     dataGridView1.AutoGenerateColumns = false;
     DataTable dt = new DataTable("tesr");
     DataColumn dcName = new DataColumn("Name", typeof(string));
     dt.Columns.Add(dcName);

 
     dt.Columns.Add("address", typeof(string));
 
     DataRow dr = dt.NewRow();
     dr[0] = "Jappa";
     dr[1] = "12, Hector Rd"; 
     dt.Rows.Add(dr); 
 
     dataGridView1.DataSource = dt;
 
}

But it displays an empty Grid:
 
 

 
Why this happense?
thanks
PS: I have attached the code if required to have a look at it :)