public struct DataType
        {
            private int datatypeId;
            private string description;
 
            public DataType(int DataTypeID, string Description)
            {
                this.datatypeId = DataTypeID;
                this.description = Description;
            }
 
            public int DataTypeID { get { return datatypeId; } }
            public string Description { get { return description; } }
        }
        public static List<DataType> DataTypes;
 
        private static List<DataType> BindDataTypes()
        {
            List<DataType> list = new List<DataType>();
            list.Add(new DataType(1,"Date"));
            list.Add(new DataType(2,"String"));
            list.Add(new DataType(3, "Number"));
 
            return list;
        }
 
public static void InitializeApplicationData()
        {
            DataTypes = BindDataTypes();
        } 
 
 
private BindingSource bindingSourceColumn = new BindingSource();
bindingSourceColumn.Add(new ColumnData("test",ApplicationData.DataTypes[0]));
                    
 
DataGridViewComboBoxColumn column = new DataGridViewComboBoxColumn();
column.DataSource = ApplicationData.DataTypes; //This is a List<DataTypes>.
column.DataPropertyName = "DataTypeID";
column.ValueMember = "DataTypeID";
column.DisplayMember = "Description";
column.Name = "Data Type";
 
datagridview.DataSource = bindingSourceColumn;