Treeview problem

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C#3.0

C#

Hi friends,

In window based application, I have treeview on form1.treeview filled from the database.
My problem is that when I delete a treenode from form2 on button click event at that time database update but treeview not refresh.

form1 f= new form1();
            
f.treeView1.Nodes.Clear();    
f.treeView1.BeginUpdate();                
f.form1_Load(sender, e);           
f.treeView1.EndUpdate();      
f.treeView1.Refresh();  

in f.form1_Load(sender, e); I call the populatesnodes method which filled the treeview.