combobox items not show in datagridview

Question

I have a win form project in c#, there is a combo box in a datagridview. it has 2 items which added in design. when I run the program, the combo box is empty. why? please help me I added the items in Design mode and it doesn't show anything then I added items programatically and it doesn't work either.

Here is the code:

  cbcCell = (DataGridViewComboBoxCell)dgvFolder.Rows[0].Cells[1];
  cbcCell.Items.Add("cat");
  cbcCell.Items.Add("dog");

Answer 1

Without too much information here, the likely problem here is that the ComboBox has the ReadOnly property set to true . You can fix this by going into Design View , click the little arrow that appears in the top left of the DataGridView , select Edit Column , select the appropiate column/cell, and change the ReadOnly property to false .