open a dialogue from datagrid?

[Michael Schindler]

I use Windows Forms C# Appl.

Here is my code:

if(e.Button == MouseButtons.Left)
{
if(hti.Type == DataGrid.HitTestType.Cell)
{
int intKontoID =
(int)dataGridFiBuKontenplan[dataGridFiBuKontenplan.CurrentCell.RowNumber,0];
//int intKontoID = 0;
string strKonto =
dataGridFiBuKontenplan[dataGridFiBuKontenplan.CurrentCell.RowNumber,1].ToStr
ing();
if((frmFiBuBuchungDlg == null)||(frmFiBuBuchungDlg.IsDisposed))
{
frmFiBuBuchungDlg = new frmFiBuBuchung(intKontoID,strKonto);
frmFiBuBuchungDlg.MdiParent=this.MdiParent;
frmFiBuBuchungDlg.Show();
}
frmFiBuBuchungDlg.Activate();
frmFiBuBuchungDlg.WindowState = FormWindowState.Normal;
}
}

My datas in the Datagrid:
----------------------------
ID,Accountnr,Accountname
My problem:
-----------------
If I click in my datagrid into the cell Accountnr i can not use a 2. times
the same celles Why?
I can click into the same row, but not in the same row the same column why?

Its possible i can this feature switch off or is my code somewhere not
correctly?

I hope someone understand my problem an i hope more someone can help me

Thanks

Michael Schindler