Represents an EntityRelationshipMember column mapping.
		/// <summary>
		/// Gets the zero-based index of the column that is bound
		/// to the specified <paramref name="dataField"/> property.
		/// </summary>
		/// <param name="dataField">The property name.</param>
		/// <param name="property">A reference to the <see cref="EntityProperty"/> object.</param>
		/// <returns>The column index.</returns>
		public int GetColumnIndex(String dataField, out EntityProperty property)
		{
			int index = -1;
			property = null;

			if ( !String.IsNullOrEmpty(dataField) )
			{
				foreach ( EntityProperty prop in PropertyMappings )
				{
					if ( dataField.Equals(prop.DataField) )
					{
						index = prop.ColumnIndex;
						property = prop;
						break;
					}
				}
			}

			return index;
		}
		/// <summary>
		/// Gets the <see cref="TableCell"/> object that is bound to
		/// the specified <paramref name="dataField"/> property.
		/// </summary>
		/// <param name="row">A <see cref="GridViewRow"/> object.</param>
		/// <param name="dataField">The property name.</param>
		/// <param name="property">a <see cref="EntityProperty"/> object.</param>
		/// <returns>A <see cref="TableCell"/> object.</returns>
		public TableCell GetCell(GridViewRow row, String dataField, out EntityProperty property)
		{
			TableCell cell = null;
			property = null;

			if ( row != null )
			{
				int index = GetColumnIndex(dataField, out property);

				if ( index > -1 && index < row.Cells.Count )
				{
					cell = row.Cells[index];
				}
			}

			return cell;
		}