Shulou(Shulou.com)06/02 Report--

This article mainly introduces how to control the position of the scroll bar in Winform TreeView in C#. It is very detailed and has a certain reference value. Interested friends must finish reading it!

There is a problem these days. When I write winform, I add checkbox to TreeView, but every time I operate a certain checkbox, the scroll bar always runs to the bottom.

After thinking a lot of ways, I finally found a property of TreeView-TopNode, which means the node that the current treeview is displayed at the top.

There is another method, EnsureVisible (), that controls the display of a node at the top. So the idea is: record the TopNode before each operation of the treeview, and then continue to top the topnode after the operation. But there is another drawback: it will always be brushed every time it is displayed. Here is the code:

Private TreeNode _ currentTopNode

Private

Void treeView1_AfterCheck (object sender, TreeViewEventArgs e)

{

_ currentTopNode=

This.treeView1.TopNode

InitTreeview ()

}

Private

Void InitTreeview ()

{

If

(_ currentTopNode! = null)

{

This.treeView1.Nodes [0] .Nodes.Cast ().

Where (o = > o.Text = = _ currentTopNode.Text). First (). EnsureVisible ()

/ / _ currentTopNode.EnsureVisible (); does not work, only the above practice is effective, I do not know the specific reason.

} else

{

This.treeView1.Nodes [0] .EnsureVisible ()

}

}

The above is all the contents of the article "how to control the position of the scroll bar in C# Winform TreeView". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.