Can someone show me an example of a Parent/Child Gridview using CSLA

AKaplan posted on Monday, May 07, 2007

I'm having trouble understanding the UI development of a Parent/Child Gridview. I have the objects all worked out. for example if i want to do a Category/Product gridview that the gridview is nested. How can this be accomplished? if i have BO's of Category / ProductChildList as my objects.

Jimbo replied on Tuesday, May 08, 2007

Assuming this heirachy:

RootList
       RootListItem
               ChildList
                   ChildItem

The following works for me:

In your load /configuration method:
------------------------------------

            RootListBindingSource.DataSource = RootList
            RootGrid.DataSource = RootListBindingSource
       
            ChildListBindingSource.DataSource = RootListBindingSource
            ChildListBindingSource.DataMember = "ChildList" '(where ChildList is a read property of each RootList.Item)
            ChildGrid.DataSource = ChildListBindingSource
  
In your Save method:
----------------------
         ' rebind the UI
                RootListBindingSource.DataSource = Nothing
                ChildListBindingSource.DataSource = Me.RootListBindingSource
                RootListBindingSource.DataSource = RootList)
                ApplyAuthorizationRules()

This is very similar to the example in Project / ProjectResources in ProjectTracker, except that the parent is a root list.
If you like to play around with datasources in the vs designer you should get the same result by navigating to the appropriate node/s.

Jimbo

AKaplan replied on Tuesday, May 15, 2007

Thank You so much

AKaplan replied on Tuesday, May 15, 2007

I have a question. The "RootListBindSource.Datasource" that you mentioned, is this referencing the cslaDatasource, because the cslaDataSource does not have a datasource method in it.

Jimbo replied on Wednesday, May 16, 2007

I was describing the use of a Windows forms BindingSource .. sorry but I assumed wrongly that you were taking about a Windows Forms application.

Jimbo.

AKaplan replied on Thursday, May 17, 2007

oh yea i guess that would make a difference huh.

Plowking replied on Tuesday, May 08, 2007

Cant quite understand what you are after there... from the naming of your classes I'll assume

-Category inherits BusinessBase
-ProductChildList inherits BusinessListBase
-You dont want to show a list of Categories, each row of which contains a nested datagrid with a list of ProductChild objects

(i.e. assuming that you want to show a child collection in a datagrid on the same page as its parent)

Then you should use the project tracker solution's ProjectEdit.aspx as an example.

JonM replied on Thursday, May 10, 2007

From what I remember that new DataGridView control is .NET 2.0/VS2005 does not support the nested tables like the older DataGrid control does.  However, this won't affect your object model, just the UI.

AKaplan replied on Tuesday, May 15, 2007

JonM,

the nested gridview is supported. I was able to do it. and there are codeproject.com forums as well.