mapping a grouped engine to a tree-view

[marcel]

I have created a stand-alone Syncfusion.Grouping.Engine based on a DataView (which overlays a simple DataTable) and have added a Group on one of the Columns that contains duplicates.
When I iterate through the Elements and come across a CaptionRow (CaptionSection doesn''t seem to exist) I can examine the Info property which contains a string telling me the number of Items and the group-value.

1) Now is there any way for me to get hold of this info individually?? i.e. not parsing this Info string.

2) Also, since in my sample I have got two ''groups'' how do I get hold of an individual group that I then can query for its Records? NOT going through the entire table.Elements iteration!

3) Ideally, I would like to attach this engine to a tree-view which in this example would show me two base-level nodes each with a number of sub-nodes. I want to expand these nodes on demand, thereby going back to the engine - identiying the group and iterating through its Records.

[Administrator]

Hi Marcel,

When you have a CaptionRow you can query ParentGroup.GetChildCount() for that CaptionRow.

ParentGroup.CategoryKeys or ParentGroup.Category will give you the category value for the specific group.

To iterate through records in a group, check first if the group has records or nested groups as details. A group can either be a final node with records or it can be a node with nested groups. If a group has records, its Groups collection will be empty and the Records collection will contain all records. If a group has nested groups, its Groups collection will have the nested groups and the Records collection will be empty.

To get hold of a specific group that matches a specific category key use the GroupsInDetails.FindGroup method.

Example:

                     GridGroup germanyGroup = (GridGroup) this.groupingGrid1.Table.TopLevelGroup.Groups["Germany"];

- or -

                     int index = this.groupingGrid1.Table.TopLevelGroup.Groups.FindGroup("Germany");

                     if (index != -1)

                     {

                           Group germanyGroup2 = this.groupingGrid1.Table.TopLevelGroup.Groups[index];

                           Trace.WriteLine(germanyGroup2);

                     }

You can then iterate through germanyGroup.Groups and/or germanyGroup.Records

We do have a TreeViewAdvDataBound sample in-house which implements pretty much what you describe below. One of our support engineers will update the direct track incident 13004 and send you the TreeViewAdvDataBound sample project.

Thanks,
Stefan

[marcel]

This worked - well again I don''t want to use the GridGroup object but normal casting to the Group class works wonders - full access now to all the groups - excellent - Thanks!

[Panji Aryaputra]

Hi Stefan, can you send me the TreeViewAdvDataBound sample?

Thanks,
Panji

[Administrator]

Panji,

I uploaded it to our ftp site.

The URL is:

http://www.syncfusion.com/Support/user/uploads/GroupingTreeViewAdv.zip

Stefan

>Hi Stefan, can you send me the TreeViewAdvDataBound sample?
>
>Thanks,
>Panji