Adding Nested Treeview Nodes in VB.NET?

Question

I am trying to add some items to a TreeView Control: TV1.Nodes.Add("key1", "Test1") 'Works TV1.Nodes("key1").Nodes.Add("key2", "Test2") 'Works (Nested) TV1.Nodes("key2").Nodes.Add("key3", "Test3") 'Error (NullReferenceException) any ideas? thanks :) JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

Assuming that the structure you want looks like: key1 -- key2 -- key3 the final line should be: TV1.Nodes("key1").Nodes("key2").Nodes.Add("key3", "Test3") Or with key1 -- key2 -- key3 Use TV1.Nodes("key1").Nodes.Add("key3", "Test3")