Hello prathap_u,

You could read about the BeginUpdate and EndUpdate methods at http://help.infragistics.com/Help/NetAdvantage/WinForms/2011.1/CLR2.0/html/Infragistics2.Win.UltraWinTree.v11.1~Infragistics.Win.UltraWinTree.UltraTree~BeginUpdate.html

and http://help.infragistics.com/Help/NetAdvantage/WinForms/2011.1/CLR2.0/html/Infragistics2.Win.UltraWinTree.v11.1~Infragistics.Win.UltraWinTree.UltraTree~Endupdate.html

You could also use an approach like the following:

You could load the xml data into a dataset and then bind this dataset to the UltraTree.

 
            DataSet myDS = new DataSet();
            foreach (DataTable t in myDS.Tables)
                t.BeginLoadData();
            myDS.ReadXml("C:\\file.xml");
            foreach (DataTable t in myDS.Tables)
                t.EndLoadData();
            ultraTree1.DataSource = myDS;
 

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