annot implicitly convert type 'System.Xml.XmlNode'

using System;

using System.Text;

using System.Collections.Generic;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using System.Xml;

using System.Xml.Xsl;

using System.Xml.Linq;

using System.IO;

//using MSXML2;

namespace createxml

{

public class Sample

{

public static void Main()

{

// var objNode;

// var ObjHighLevel;

// var objGrandChildNode;

String strHighLevelInfoPath, strText, strNodes;

int IntCount;

string[] strNodesScplit,strSplit;

char[] delimiterChars = { ' ', ',', '.', ':', '\t' };

char[] stringdelimeter={'$','%'};

XmlDocument objDOM=new XmlDocument();

var strPath=@"c:\Temp\xml_file.xml";

var objNode = objDOM.CreateNode("Element", "Root", "");

objNode = objDOM.CreateProcessingInstruction("xml-stylesheet", "type='text/xsl' href='XmlReference/LogReport.xsl'");

objDOM.InsertBefore(objNode, objDOM.FirstChild);

objDOM.AppendChild(objNode);

strHighLevelInfoPath = @"C:\Inputs\HighLevelInfo.txt";

strText = File.ReadAllText(strHighLevelInfoPath);

strNodes = "MachineName,UserName,Application,TestingType,OperatingSystem,BuildVersion";

strNodesScplit = strNodes.Split(delimiterChars);

strSplit = strText.Split(stringdelimeter);

var ObjHighLevel = objDOM.CreateNode("Element","HighLevelInfo","");

var objGrandChildNode = objDOM.CreateNode("Element", "strNodesScplit", "");

objGrandChildNode.InnerText= System.Net.Dns.GetHostName();

ObjHighLevel.AppendChild (objGrandChildNode);

for (IntCount = 1; (IntCount <= strSplit.GetUpperBound(0)); IntCount++)

{

objGrandChildNode = objDOM.CreateNode("Element", "MachineName", "");

objGrandChildNode.InnerText = strSplit.GetValue(IntCount);

ObjHighLevel.AppendChild(objGrandChildNode);

}

objGrandChildNode = objDOM.CreateNode("Element", "ExecuteDateTime", "");

objGrandChildNode.InnerText = DateTime.Now.ToString();

ObjHighLevel.AppendChild(objGrandChildNode);

objNode.AppendChild(ObjHighLevel);

objDOM.AppendChild(objNode);

objNode = null;

objDOM.Save(strPath);

objDOM = null;

}

}

}

Error 1 Cannot implicitly convert type 'System.Xml.XmlNode' to 'System.Xml.XmlProcessingInstruction'. An explicit conversion exists (are you missing a cast?) C:\Users\Administrator\Documents\Visual Studio 2012\Projects\Rashmi1\Rashmi1\UnitTest5.cs 32 23 Rashmi1

Error 2 Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?) C:\Users\Administrator\Documents\Visual Studio 2012\Projects\Rashmi1\Rashmi1\UnitTest5.cs 54 43 Rashmi1

 

Please help