coming across errors in this program

Question

Hi I have done a program , here The program reads a xml schema file and automatically writes data to a xml file. And it also reads a input xml file and if any field name of this input file and schema file is the same then it loads data from the input xml file and writes into a new xml file. I have done it and I am coming across some errors. I will paste the part of the program . Please help me to sort out the error.Please say whats wrong in this coding .and please correct it private void button2_Click(object sender, System.EventArgs e) { ArrayList FiledNames = new ArrayList(); ArrayList MatchList = new ArrayList(); XmlTextReader xtr = new XmlTextReader(@"C:\CDEV\testdatagenerator\FIELDNAMES.xml"); while (xtr.Read()) { switch (xtr.NodeType) { case XmlNodeType.Element: FiledNames.Add(xtr.Name); break; } } xtr.Close(); XmlDocument xdc = new XmlDocument(); xdc.Load(@"C:\CDEV\testdatagenerator\vw_forecast.xml"); dataSet1.ReadXmlSchema(txtSchema.Text); foreach (DataTable dTbl in dataSet1.Tables) { int i = 0; object[] oValues = new object[dTbl.Columns.Count]; xdc.Load(@"C:\CDEV\testdatagenerator\FIELDNAMES.xml"); foreach (DataColumn dColmn in dTbl.Columns) { for (int y=0; y