Hi I am using Visual C# on .NET 2005. I have a treeview in which i have implemented drag and drop and it works correctly. Currently I am trying to implement the auto scroll up and down when the user drags a node near the top or the bottom of the tree. Can anyone give me some ideas on how to do this? I saw a bunch of VB examples of using SendMessage to implement this. But how do you do it in C#? Thank you for your time.