Add column into datagridview taken from database

Question

I'm showing data from database table into datagridview each column has a checkbox for example column named "Tel" has a check box "checkBox_Tel"

if (!checkBox_Tel.Checked)
        {
            dg.Columns.Remove("Tel");
        }

when the user uncheck one , the column related to this check box is removed from the dgv

but i want to return that column when the user recheck it how can i do that?

Answer 1

If your intent is just to hide the column and then restore its visibility then

        dg.Columns("Tel").Visible = checkBox_Tel.Checked

Use this property to hide a column from view while keeping the column in the DataGridView. To completely remove a column, use the DataGridViewColumnCollection.Remove method.