Only allow datagridviewcheckbox to check off if it meets certain criteria.

Question

I have a datagridview with a checkbox column next to it. The datagridview holds a list of all open invoices for a given customer. I don't want the checkbox to check off if there is no money to apply to this invoice. Basically every time the checkbox is
unchecked and the user is trying to check in the check box it should check if there is money to apply if yes then check it off if not then it should give a message that it can't check off.
Debra has a question

Answer 1

I have a datagridview with a checkbox column next to it. The datagridview holds a list of all open invoices for a given customer. I don't want the checkbox to check off if there is no money to apply to this invoice. Basically every time the checkbox
is unchecked and the user is trying to check in the check box it should check if there is money to apply if yes then check it off if not then it should give a message that it can't check off.
Debra has a question
Hello,
You could consider doing that task inside CellValidating event like the code below.
private void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
{ //make sure the cell belongs to the checkboxColumn
if (e.ColumnIndex ==0 && e.RowIndex >-1 )
{ //check whether it meets certain criteria here
if (Convert.ToInt32(this.dataGridView1.Rows[e.RowIndex].Cells["criteria"].Value) < 2)
dataGridView1.CancelEdit();
MessageBox.Show("It doesn't meet");
The line dataGridView1.CancelEdit(); will stop the checking and return to original value.
You could place the opinion with your line instaed.
Regards,
Carl
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