Hello,

 

I encountered some strange behaviour on the Xceed Gridcontrol for Windows Forms  (v3.9), trying to implement a databound master detail

grid. I setup and loaded two datatables in a dataset with an additional Parent-Child-Relationship between these two tables added to the

dataset. The relation has been tested, there is no problem in navigating the parent-child relationship (e.g. by calling DataRow.GetChildRows,

using this relation).

When establishing the databinding in the detailgrid, an exception is thrown: "Child list for field RelationParentChild cannot be created"

The actual code looks like this:

 

gridControl.BeginInit();

gridControl.SetDataBinding(dataTableParent, "");

// additional code to setup grid

 

DetailGrid detailGrid = new DetailGrid();

// additional code to setup detail grid

 gridControl.Add(detailGrid);

detailGrid.SetDataBinding(dataTableChild, relationName); // here exception occurs

 

I read related postings to this problem, but none seems to address this special issue, as the databinding

should be complete here.

Any ideas on this strange behaviour?

 

Thanks!

 

Dietmar

 

 

 

 

Normal 0 false false false EN-CA X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

Hi Dietmar,

I would have to see all your code where it concerns binding to the GridControl. You can always refer to the online documentation which describes in full detail how to add the Master/Detail feature to the Grid for .NET. Just by looking at the simple code snippet in your post, it seems as though everything is ok. You can always send us a sample application (you can use the Northwind Database which we provide for you as a DLL
Xceed.Grid.Samples.SampleData) and we can see what is exactly going on.
You can send it to support@xceed.com and please make a reference to this post so that we know it is you. If you want to retrace your steps
instead, you can refer to the information below that I have gathered for you.
 
http://doc.xceedsoft.com/products/XceedGrid/Building_a_bound_hierarchical_master_detail_grid.html

You can also create a DataSet with the relation already done for you and
just bind your DataSet to the DataSource of your DataGridControl instance. An example of this can be found in the MasterDetailGrid sample application.

C:\Xceed Samples\Xceed Grid for .NET v3.9\CSharp\MasterDetailSimple
 
If you want to set the relation in code behind, you can do as in the regular MasterDetail sample application which does it for you in the LoadSynchronizedGrid method in the MasterDetail class.

C:\Xceed Samples\Xceed Grid for .NET v3.9\CSharp\MasterDetail 

---

Marc

Developer in Technical Support
Xceed - Multi-talented components - http://xceed.com