Good afternoon,
I have 2 datagridview, but when I add a column in the second datagrid that is already in the first datagrid I get the following:
It is possible that you can not have 2 columns with the same name in different datagrid, taking into account that the first datagrid has no relationship with the second datagrid.
Thanks for your help.
If possible, the error occurs because every time you create a column the designer creates an instance of the DataGridViewColumn class with the name of the column in your form.
You can name them Poli_Codigo1 and Poli_Codigo2 and the property HeaderText name both as Poli_Codigo and it will work as you need.
To avoid confusion with your variables you can name them according to the standard using the name of the class Poli_Codigo1DataGridViewColumn or simply Poli_Codigo1Column.