Using Event Checkbox in Datagridview

Question

Hi eveybody I want to throw event checkbox in Datagridview is checked Code my Here: public int chon = 0; private void dgvNvHop_CellContentClick(object sender DataGridViewCellEventArgs e) { try { if (chon == 0) { chon = 1; dgvNvHop.Rows[e.RowIndex].Cells[Chon].Value = true; } else { chon = 0; dgvNvHop.Rows[e.RowIndex].Cells[Chon].Value = false; } } catch { } } But When I click into a checkbox it set true.and after if I remove click itit set false.But I get all checkbox is values equal true .Checkbox is remove click still values true.I don't understand

Suthish Nair · Answer

refer forum

Vulpes · Answer

OK we know now that it's leaving the eventhandler with the correct value so something later in your code must be setting it back to true. I'd place a breakpoint on this line: dgvNvHop.Rows[e.RowIndex].Cells[Chon].Value = false; and single step from there to see if you can find it.

toanhoi bui · Answer

YesCheckbox is true false but When I find all checkbox is checked is true if (dgvNvHop.Rows[i].Cells[ Chon ].Value != null ) But Result is not correct

Vulpes · Answer

It sounds like something is either resetting the value to true or preventing it from being changed to false in the first place. To see if we can rule out the second possibility try this: private void dgvNvHop_CellContentClick(object sender DataGridViewCellEventArgs e) { try { if (chon == 0) { chon = 1; dgvNvHop.Rows[e.RowIndex].Cells[Chon].Value = true; } else { chon = 0; dgvNvHop.Rows[e.RowIndex].Cells[Chon].Value = false; } } catch { } MessageBox.Show(dgvNvHop.Rows[e.RowIndex].Cells[Chon].Value.ToString()); } Is the DGV data-bound?