GridView Hierarchy with two childTableDefinitions.

[gureumi]

I have a GridView hierarchy with two child tables, of which I want to show only a few chosen columns .

In Q2, it worked fine with the following code.
 

 

GridViewTableDefinition tdPayment = new GridViewTableDefinition();
GridViewTableDefinition tdDetail = new GridViewTableDefinition();

tdPayment.DataSource = MySalePayments = GetSalePaymentsData();
tdPayment.AutoGenerateFieldDescriptors = false;

TableRelation tr = new TableRelation();
tr.FieldNames.Add(new FieldDescriptorNamePair("Receipt", "Receipt"));
tdPayment.Relation = tr;

GridViewDataColumn paymentType = new GridViewDataColumn();
paymentType.UniqueName = "SalePaymentType";
paymentType.Header = "PaymentType";
paymentType.DataType = typeof(short);
GridViewDataColumn amount = new GridViewDataColumn();
amount.UniqueName = "Amount";
amount.Header = "Amount";
amount.DataType = typeof(decimal);

tdPayment.FieldDescriptors.Add(paymentType);
tdPayment.FieldDescriptors.Add(amount);

tdDetail.AutoGenerateFieldDescriptors = false;
tdDetail.DataSource = MySaleDetails = GetSaleDetailData();

tdDetail.Relation = tr;
GridViewDataColumn itemId = new GridViewDataColumn();
itemId.UniqueName = "ItemId";
itemId.Header = "ItemId";
itemId.DataType = typeof(string);
GridViewDataColumn saleQty = new GridViewDataColumn();
saleQty.UniqueName = "SaleQuantity";
saleQty.Header = "Sale Qty";
saleQty.DataType = typeof(short);
GridViewDataColumn unitPrice = new GridViewDataColumn();
unitPrice.UniqueName = "UnitPrice";
unitPrice.Header = "Price";
unitPrice.DataType = typeof(decimal);
GridViewDataColumn discount = new GridViewDataColumn();
discount.UniqueName = "Discount";
discount.Header = "Discount";
discount.DataType = typeof(decimal);
GridViewDataColumn individualDiscount = new GridViewDataColumn();
individualDiscount.UniqueName = "IndividualDiscount";
individualDiscount.Header = "Ind.Discount";
individualDiscount.DataType = typeof(decimal);

tdDetail.FieldDescriptors.Add(itemId);
tdDetail.FieldDescriptors.Add(saleQty);
tdDetail.FieldDescriptors.Add(unitPrice);
tdDetail.FieldDescriptors.Add(discount);
tdDetail.FieldDescriptors.Add(individualDiscount);

radGridViewSalesList.TableDefinition.ChildTableDefinitions.Add(tdPayment);
radGridViewSalesList.TableDefinition.ChildTableDefinitions.Add(tdDetail);

 

When Run in Q3, AutoGenerateFieldDescriptors was simply ignored showing all columns.

In Q3, it was suggested that I use AutoGenerateColumns of GridViewDataControl .
I was able to do it with single child table using DataLoading handler as shown in the demo source code.
But I don't know how to do it with two child tables.

[gureumi]

Problem seems to me is that we can not set visual tree more than once under RadGridView.HierarchyChildTemplate

I also wonder how I can use GridViewDataControl in the context of two child tables.
My understanding is that sender is RadGridView object in the following code.

private void RadGridView1_DataLoading(object sender,
                                      GridViewDataLoadingEventArgs e)
{
   GridViewDataControl dataControl = (GridViewDataControl) sender;
   if (dataControl.ParentRow != null)
   {
      dataControl.CanUserFreezeColumns = false;
      dataControl.ShowGroupPanel = false;
      dataControl.AutoGenerateColumns = false;

      GridViewDataColumn column = new GridViewDataColumn();
      column.Header = "Order ID";
      column.DataMemberBinding = new System.Windows.Data.Binding("OrderID");
      dataControl.Columns.Add(column);
      // omitted lines
   }
}

Am I missing something?

[Stefan Dobrev]

Hello gureumi,

I have prepared a small example which illustrates how to distinguish which is the correct grid for the given table definition. Please find it in the attached archived file.

Hope this helps,
Stefan Dobrev
the Telerik team

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[gureumi]

Thanks you.

I got it fixed.