Cursor Positition into a datagrid cell?

[Michael Schindler]

How i can eliminate a cursor from a datagrid cell?

If I click into a datagrid cell then I open a other dialog with parameter
key from this row.
If I close this other dialogue a can not reopen this other dialog if i click
into the same cell because the cursor is into this cell an if i click into
this cell the event startet note once again.

My event is:
-------------
private void dataGridFiBuErfassenAuswahl_MouseDown(object sender,
System.Windows.Forms.MouseEventArgs e)

It's possible i can the cursor eliminate from this position? I wil the
cursor not move i will eliminate.
thus as I would start the dialogue again, because there I had also still no
cursor in datagrid.

Ok, i hope your understand my problem and i hope someone can help me.

Thanks

Michael