Gridview - Adding a third hierarchy or level

[Gonzalo]

Greetings,

How would I add a 3rd. level hierarchy programmatically? Could you provide a small example or example 511493?

+row 1
+child row 1
+ child row 2

Best regards,

G

[Richard Slade]

Hello,

Yes, you can add additional levels. You will need to simply add a new template and relation to the child template in the same way as you would add one to the master template.

An example depends on how you wish to bind or add your data. Please have a look at the help topic which will guide you in doing this. Hope this helps
Richard

[Gonzalo]

Thanks for you reply

I am programatically building the tables and relationships

Dim ID As New GridViewDecimalColumn()
ID.Name = "ID"
ID.HeaderText = "Id"
RadGridView1.MasterTemplate.Columns.Add(ID)

Dim Name As New GridViewTextBoxColumn()
Name.Name = "Name"
Name.HeaderText = "Name"
Name.Width = 100
RadGridView1.MasterTemplate.Columns.Add(Name)

Dim Under_Appeal As New GridViewCheckBoxColumn()
Under_Appeal.DataType = GetType(Boolean)
Under_Appeal.Name = "Under_Appeal"
Under_Appeal.HeaderText = "Under Appeal"
RadGridView1.MasterTemplate.Columns.Add(Under_Appeal)

Dim Terminated As New GridViewCheckBoxColumn()
Terminated.DataType = GetType(Boolean)
Terminated.Name = "Terminated"
Terminated.HeaderText = "Terminated"
RadGridView1.MasterTemplate.Columns.Add(Terminated)

Dim Hash As New GridViewDecimalColumn()
Hash.Name = "Hash"
Hash.HeaderText = "#"
RadGridView1.MasterTemplate.Columns.Add(Hash)


RadGridView1.Rows.Add(1, "John", True, True)
RadGridView1.Rows.Add(2, "Mary", True, False)
RadGridView1.Rows.Add(3, "Peter", False, True)


Dim template As New GridViewTemplate
template.Columns.Add(New GridViewDecimalColumn("ParentID"))
template.Columns.Add(New GridViewTextBoxColumn("TEXT"))
template.Columns.Add(New GridViewDecimalColumn("PRICE"))

RadGridView1.MasterTemplate.Templates.Add(template)

Dim relation As New GridViewRelation(RadGridView1.MasterTemplate)
relation.ChildTemplate = template
relation.RelationName = "PersonProduct"
relation.ParentColumnNames.Add("ID")
relation.ChildColumnNames.Add("ParentID")
RadGridView1.Relations.Add(relation)


template.Rows.Add(1, "sugar", 2.0)
template.Rows.Add(1, "cake", 12.0)
template.Rows.Add(1, "butter", 3.0)
template.Rows.Add(2, "cake", 12.0)


Dim template2 As New GridViewTemplate
template2.Columns.Add(New GridViewDecimalColumn("ParentID2"))
template2.Columns.Add(New GridViewTextBoxColumn("TYPE"))
template2.Columns.Add(New GridViewDecimalColumn("QTY"))

RadGridView1.MasterTemplate.Templates(0).Templates.Add(template2)

Dim relation2 As New GridViewRelation(RadGridView1.MasterTemplate.Templates(0))
relation2.ChildTemplate = template2
relation2.RelationName = "PersonProduct2"
relation2.ParentColumnNames.Add("ParentID")
relation2.ChildColumnNames.Add("ParentID2")
RadGridView1.Relations.Add(relation2)


template2.Rows.Add(1, "brown", 1)
template2.Rows.Add(1, "whiter", 3)
template2.Rows.Add(2, "banana", 2)

I am getting errors at runtime when I try to see the 3rd level in the hyerarchy. This is just a test. 
Best regards,

G

[Julian Benkov]

Hello Gonzalo,

We found some issues with building hierarchy mode in unbound mode using your scenario. The issue is logged in our Public Issue Tracking System. It will be addressed in Q1 2012 SP1 release, planned for mid-March. Currently, you can use DataTable to prepare your data and build hierarchy in bound mode.

For examples of bound hierarchy, please open our Demo application, which can be found in the Telerik folder in your Start Menu and navigate to RadGridView > Hierarchy. 

Thank your time and cooperation. Your Telerik points have been updated.

All the best,
Julian Benkov
the Telerik team