Error while updating XML thru C#.Net

[VijaySofist]

Hi All,

I have written a procedure in C#.Net for updating an xml node. I am using VS2008 with Dot Net Framework 3.5

I am submitting my code in below

 private void updateNodeValue(string nodename, string nodevalue, string strfilepath)
         {
             try
             {
                 XmlDocument xd1 = new XmlDocument();
                 xd1.Load(strfilepath);
                 string selnode = xmlnodepath + "/" + nodename;
                 XmlNode nod1 = xd1.SelectSingleNode(selnode);
                 nod1.InnerText = nodevalue;
                 xd1.Save(strfilepath);
                 MessageBox.Show("Successfully Updated");
             }
             catch (Exception ex)
             {
                 MessageBox.Show(ex.Message);
             }
         }

Now What the problem is, it throws an error "Object reference not set". I don't know exactly why and where the error occurs


With Regards
Vijay. R

[tlhintoq]

In Visual Studio, under the Debug menu is an option "Exceptions ".
Tick the box for "thrown" on for "Common Language Runtime exceptions" so it is on. This will cause Visual Studio to halt and highlight the error-producing line when the error is created instead of later when it goes unhandled.