This is my data on datasource-

telerik:RadTreeView ID="RadTreeView1" runat="server" DataSourceID="ObjectDataSourceCompany"

DataTextField="COMPANYNAME" DataFieldID="CATEGORYID" DataFieldParentID="COMPANYID"

DataValueField="CATEGORYID">

</telerik:RadTreeView>

This is the Error-

This constraint cannot be enabled as not all values have corresponding parent values.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: This constraint cannot be enabled as not all values have corresponding parent values.

Did I miss anything...How do i fix this??

  private static void CreateDataRelations(ref DataSet ds, bool createConstraints)
        {

            DataRelation dataRelation = new DataRelation("PublicationTypeChildren",
                ds.Tables[0].Columns[(int)PublicationTypeColumns.Guid],
                ds.Tables[1].Columns[(int)PublicationTypeChildrenColumns.ParentGuid],
                createConstraints);
            ds.Relations.Add(dataRelation);
            
        }

As I have tried Solutions of Many Posts but didnot get any Luck,Can you please help.

Hello Sachita,

As the error message says, the data has entries that have a non-existent parent node. To debug that, I would recommend to:

1) Get all ParentIDs of all entries

2) Check if each of the ParentIDs have a corresponding item with ID equal to the ParentID

Once you do that, you should find which entries have non-existent parents and fix them.

Regards,
Peter Milchev
Progress Telerik