Adding columns to a DataGrid

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C#

When i add columns to a data grid, i get this error.

At least one of the DataGridView control's columns has no cell template.

Why is this happening?

Any idea?

Code to add new columns is:

dataGridView1.AutoGenerateColumns = false;
          DataGridViewColumn column1;
          DataGridViewColumn column2;
          DataGridViewColumn column3;
          DataGridViewColumn column4;
          DataGridViewColumn column5;
          DataGridViewColumn column6;
          column1 = new DataGridViewColumn();
          column1.DataPropertyName = "ID";
          column1.Name = "ID";
          dataGridView1.Columns.Add(column1);
          column2 = new DataGridViewColumn();
          column2.DataPropertyName = "Name";
          column2.Name = "Name";
          dataGridView1.Columns.Add(column2);
          column3 = new DataGridViewColumn();
          column3.DataPropertyName = "RegNum";
          column3.Name = "Registration Number";
          dataGridView1.Columns.Add(column3);
          column4 = new DataGridViewColumn();
          column4.DataPropertyName = "Gender";
          column4.Name = "Gender";
          dataGridView1.Columns.Add(column4);
          column5 = new DataGridViewColumn();
          column5.DataPropertyName = "Relationship";
          column5.Name = "Relationship";
          dataGridView1.Columns.Add(column5);
          column6 = new DataGridViewColumn();
          column6.DataPropertyName = "Address";
          column6.Name = "Address";
          dataGridView1.Columns.Add(column6);

Any help is much appreciated!

Thanks!