DataGridViewComboBoxCell Binding - “value is not valid”

Question

I\'m trying to bind separate ComboBox cells within a DataGridView to a custom class, and keep getting an error

DataGridViewComboBoxCell value is not v

Answer 1

Afters hours of trials, I finally found a solution that works.

// Create a DataGridView
System.Windows.Forms.DataGridView dgvCombo = new System.Windows.Forms.DataGridView();

// Create a DataGridViewComboBoxColumn
System.Windows.Forms.DataGridViewComboBoxColumn colCombo = new 

System.Windows.Forms.DataGridViewComboBoxColumn();

// Add the DataGridViewComboBoxColumn to the DataGridView
dgvCombo.Columns.Add(colCombo);

// Define a data source somewhere, for instance:
public enum DataEnum
{
    One,
    Two,
    Three
}

// Bind the DataGridViewComboBoxColumn to the data source, for instance:
colCombo.DataSource = Enum.GetNames(typeof(DataEnum));

// Create a DataGridViewRow:
DataGridViewRow row = new DataGridViewRow();

// Create a DataGridViewComboBoxCell:
DataGridViewComboBoxCell cellCombo = new DataGridViewComboBoxCell();

// Bind the DataGridViewComboBoxCell to the same data source as the DataGridViewComboBoxColumn:
cellCombo.DataSource = Enum.GetNames(typeof(DataEnum));

// Set the Value of the DataGridViewComboBoxCell to one of the values in the data source, for instance:
cellCombo.Value = "Two";
// (No need to set values for DisplayMember or ValueMember.)

// Add the DataGridViewComboBoxCell to the DataGridViewRow:
row.Cells.Add(cellCombo);

// Add the DataGridViewRow to the DataGridView:
dgvCombo.Rows.Add(row);

// To avoid all the annoying error messages, handle the DataError event of the DataGridView:
dgvCombo.DataError += new DataGridViewDataErrorEventHandler(dgvCombo_DataError);

void dgvCombo_DataError(object sender, DataGridViewDataErrorEventArgs e)
{
    // (No need to write anything in here)
}

That is all.