What field name is not showing up?

>For some unknown reason the first column is not showing up in the grid:
>
>

> private void FormatOrderItemsGrid(OrderDetailsDS.OrderDetailsDataTable dt)
>        {
>            if (_gridStyleItem == null)
>            {
>                _gridStyleItem = new DataGridTableStyle();
>                this.grdOrderItems.TableStyles.Add(_gridStyleItem);
>                this.grdOrderItems.TableStyles[0].MappingName = dt.TableName;
>                //this.Width = 220;
>                //this.grdOrderItems.Width = 220;
>
>                //Order No column               
>
>                //Order Item Column
>                DataGridCustomTextBoxColumn colManPartNo = new DataGridCustomTextBoxColumn();
>                colManPartNo.Owner = this.grdOrderItems;
>                colManPartNo.HeaderText = "Item No";
>                colManPartNo.MappingName = "itemNo";
>                colManPartNo.Width = ((this.grdOrderItems.Width * 20) / 100);
>                colManPartNo.Alignment = HorizontalAlignment.Left;
>
>                // Unfortunately the Description column is not in OrderDetails table
>                //Order Item Description
>                DataGridCustomTextBoxColumn colDescription = new DataGridCustomTextBoxColumn();
>                colDescription.Owner = this.grdOrderItems;
>                colDescription.HeaderText = "Description";
>                colDescription.MappingName = "Description";
>                colDescription.Width = ((this.grdOrderItems.Width * 40) / 100);
>                colDescription.Alignment = HorizontalAlignment.Left;
>
>                DataGridCustomTextBoxColumn colQuantity = new DataGridCustomTextBoxColumn();
>                colQuantity.Owner = this.grdOrderItems;
>                colQuantity.HeaderText = "Qty";
>                colQuantity.MappingName = "Qty";
>                colQuantity.Width = ((this.grdOrderItems.Width * 10) / 100);
>                colQuantity.Alignment = HorizontalAlignment.Center;
>                
>                //Order Item Price
>                DataGridCustomTextBoxColumn colPrice = new DataGridCustomTextBoxColumn();
>                colPrice.Owner = this.grdOrderItems;
>                colPrice.HeaderText = "Price";
>                colPrice.MappingName = "Price";
>                colPrice.Width = ((this.grdOrderItems.Width * 15) / 100);
>                colPrice.Alignment = HorizontalAlignment.Right;
>                // Setup table mapping name
>
>                //Order Item Total Price
>                DataGridCustomTextBoxColumn colTotalPrice = new DataGridCustomTextBoxColumn();
>                colTotalPrice.Owner = this.grdOrderItems;
>                colTotalPrice.HeaderText = "Total";
>                colTotalPrice.MappingName = "TotalPrice";
>                colTotalPrice.Width = ((this.grdOrderItems.Width * 15) / 100);
>                colTotalPrice.Alignment = HorizontalAlignment.Right;
>
>                // Setup table mapping name
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colManPartNo);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colDescription);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colQuantity);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colPrice);
>                this.grdOrderItems.TableStyles[0].GridColumnStyles.Add(colTotalPrice);
>                this.grdOrderItems.RowHeadersVisible = false;
>            }
>            this.grdOrderItems.DataSource = dt;
>            this.grdOrderItems.Refresh();
>        }

>
>>Look at this in your code,
>>
>>You repeated colPrice in [//Order Item Total Price] part instead of colTotalPrice data grid view column.
>>It seems you did a COPY - PATE
>>
>> //Order Item Price
>> DataGridCustomTextBoxColumn colPrice = new DataGridCustomTextBoxColumn();
>> colPrice.Owner = this.grdOrderItems;
>> colPrice.HeaderText = "Price";
>> colPrice.MappingName = "Price";
>> colPrice.Width = ((this.grdOrderItems.Width * 24) / 100);
>> colPrice.Alignment = HorizontalAlignment.Right;
>> // Setup table mapping name
>>
>> //Order Item Total Price
>> DataGridCustomTextBoxColumn colTotalPrice = new DataGridCustomTextBoxColumn();
>> colPrice.Owner = this.grdOrderItems;
>> colPrice.HeaderText = "Total";
>> colPrice.MappingName = "TotalPrice";
>> colPrice.Width = ((this.grdOrderItems.Width * 24) / 100);
>> colPrice.Alignment = HorizontalAlignment.Right;