DataGridViewComboBoxColumn - type of items in the drop down list

Question

I have a DataGridView that has a ComboBox column. I populate this column's list with items of a type Field :

DataGridViewComboBoxColumn fieldsColumn = argumentsDataGridView.Columns["field"] as DataGridViewComboBoxColumn;
            foreach (Field field in SessionData.Fields)
                fieldsColumn.Items.Add(field);
            fieldsColumn.DisplayMember = "Name";  

Then after some user's action I put a value in the cell of this column like this:

private void AddArgument(string argumentName, Field field)
        {
            int index = argumentsDataGridView.Rows.Count;
            argumentsDataGridView.Rows.Add(new DataGridViewRow());
            DataGridViewRow newRow = argumentsDataGridView.Rows[index];
            newRow.Cells["nameArg"].Value = argumentName;
            -> newRow.Cells["field"].Value = field;
        }

If I now access the cell's Value, it is of a type Field . If I select different item from the combo, the cell's Value becomes a string. How can I handle it? I need items of type Field .

Answer 1

the solution was to create a property Self in class Field :

public Field Self
        {
            get { return this; }
        }

and set is as a ValueMember of the combo box column.
I thought that without specifing ValueMember this is a default return value and I was wrong.