programmatically delete nodes of a treeview

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1.33/5 (2 votes)

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Hi all

In my ASP.Net application i'm binding a treeview from database. Also i have done coding to save child elements to DB by clicking on a tree node. Now i want to know the code for deleting nodes from the tree view as well as in the DB ?

treeView1.Nodes.Remove(treeView1.SelectedNode);

by using this i can remove nodes from tree view but not from DB , so when i refresh the page deleted nodes again displayed.

Posted 3-Jan-14 19:54pm

Praveen_P

Updated 4-Jan-14 7:06am

Sergey Alexandrovich Kryukov

v2

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Sergey Alexandrovich Kryukov 4-Jan-14 2:24am

What's wrong with just reading the MSDN documentation?!
—SA

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Abhinav S · Accepted Answer · 2014-01-03T20:21:00

Solution 1

When you remove the node, delete the row in the table so next time node does not refresh with the value.

Posted 3-Jan-14 20:21pm

Abhinav S

Comments

Sergey Alexandrovich Kryukov 4-Jan-14 13:05pm

This is a right approach with a data-bound control, a 5.
—SA

Abhinav S 4-Jan-14 13:43pm

Thank you SA.

Espen Harlinn 5-Jan-14 12:04pm

5'ed!

Abhinav S 5-Jan-14 12:09pm

Thank you Espen.

Sergey Alexandrovich Kryukov · Accepted Answer · 2014-01-03T20:25:00

What's wrong with just reading the MSDN documentation? Here:
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treeview.nodes%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treenodecollection%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treenodecollection.remove%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treenodecollection.removeat%28v=vs.110%29.aspx[^],
Microsoft Q209354.

The most important link here is, of course, the last one.

—SA