deleting empty row of datagridview

I gess this could help you ,

bool Empty = true;

for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
    Empty = true;
    for (int j = 0; j < dataGridView1.Columns.Count; j++)
    {
        if (dataGridView1.Rows[i].Cells[j].Value != null && dataGridView1.Rows[i].Cells[j].Value.ToString() != "")
        {
            Empty = false;
            break;
        }
    }
    if (Empty)
    {
        dataGridView1.Rows.RemoveAt(i);
    }
}

Check with the source before binding to datagridview

Like if you're using DataTable to bind datagridview then you can use following procedure.

foreach(DataRow row in dt.Rows)
       {
           bool IsEmpty = false;
           foreach (object obj in row.ItemArray)
           {
               if (String.IsNullOrEmpty(obj.ToString()))
               {
                   IsEmpty = true;
               }
               else
               {
                   IsEmpty = false;
               }
           }
           if (IsEmpty)
           {
               dt.Rows.Remove(row);
           }
}

Thanks.

now I find a neat solution:

yourDataGridView.AllowUserToAddRows = false;