Develop Reference

embed pcap dll files into c# project created DLL

I am trying to create user defined function which uses class defined in pcapDotNet.Core.Dll file. My c# Code is as below:
using System;
using System.IO;
using System.Collections.Generic;
using PcapDotNet.Core;
using System.Linq;
using System.Runtime.InteropServices;
using RGiesecke.DllExport; //GANESH
using System.Runtime.InteropServices;//GANESH
using System.Reflection;
namespace ObtainingAdvancedInformationAboutInstalledDevices
{
class Program1
{
/*
static void Main(string[] args)
{
Program1 var1 = new Program1();
var1.checkDevice();
}*/
public Program1()
{
AppDomain.CurrentDomain.AssemblyResolve += ResolveAssembly;
}
static Assembly ResolveAssembly(object sender, ResolveEventArgs args)
{
String dllName = new AssemblyName(args.Name).Name + ".dll";
var assem = Assembly.GetExecutingAssembly();
String resourceName = assem.GetManifestResourceNames().FirstOrDefault(rn => rn.EndsWith(dllName));
if (resourceName == null) return null; // Not found, maybe another handler will find it
using (var stream = assem.GetManifestResourceStream(resourceName))
{
Byte[] assemblyData = new Byte[stream.Length];
stream.Read(assemblyData, 0, assemblyData.Length);
return Assembly.Load(assemblyData);
}
}
//**************************************USER DEFINED FUNCTIONS START*********************
[DllExport("checkFunction", CallingConvention = CallingConvention.Cdecl)]//GANESH
public static int checkFunction()
{
Program1 worker1 = new Program1();
worker1.checkDevice();
return 0;
}
void checkDevice()
{
// Retrieve the interfaces list
IList<LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;
Console.WriteLine(" inside checkDevice\n");
// Scan the list printing every entry
for (int i = 0; i != allDevices.Count(); ++i)
DevicePrint(allDevices[i]);
}
// Print all the available information on the given interface
private static void DevicePrint(IPacketDevice device)
{
// Name
Console.WriteLine(device.Name);
// Description
if (device.Description != null)
Console.WriteLine("\tDescription: " + device.Description);
// Loopback Address
Console.WriteLine("\tLoopback: " +
(((device.Attributes & DeviceAttributes.Loopback) == DeviceAttributes.Loopback)
? "yes"
: "no"));
// IP addresses
foreach (DeviceAddress address in device.Addresses)
{
Console.WriteLine("\tAddress Family: " + address.Address.Family);
if (address.Address != null)
Console.WriteLine(("\tAddress: " + address.Address));
if (address.Netmask != null)
Console.WriteLine(("\tNetmask: " + address.Netmask));
if (address.Broadcast != null)
Console.WriteLine(("\tBroadcast Address: " + address.Broadcast));
if (address.Destination != null)
Console.WriteLine(("\tDestination Address: " + address.Destination));
}
Console.WriteLine();
}
}
}
My python code is as below:
class gooseDriver():
"""A class that creates windows form by importing IED.MainWindow()"""
def __init__(self, ipAddress, port):
self.hllDll = WinDLL (r"C:\WORK\IEC61850\gooseThread1\gooseThread1\bin\x64\Debug\gooseThread1.dll")
self.hllDll.checkFunction()
print("Goose Message Started\n")
def main():
IED = gooseDriver("192.168.0.20", 102)
print("GooseDriver is called\n")
if __name__ == '__main__':
main()
when I tried to call checkFunction from python giving error as "OSError: [WinError -532462766] Windows Error 0xe0434352". This is because function is using LivePacketsDevice class from pcap files. I have embedded pcapDotNet.Core.Dll file while generating DLL as reference. Can anybody suggest what is solution for this issue please.

After lot of trial, it started working when i placed pcapDotNet DLL files into folder where Python interpreter exists. Dont know what is reason? can anybody know on this please.

NetSuite SuiteTalk "customSearchJoin" access from SOAP XML Response

I am still getting warmed up with NetSuite and have come across an issue I can't crack.
I am building a C# function to pull information from an XML soap response from NetSuite. This XML is the result of a saved search call which contains a section that is a join titled customSearchJoin that I am unsure how to access. Below I will show the XML section and my attempts to access it in the C# function.
I am attempting to access the field with the value of 091736418
XML segment:
<platformCore:searchRow xsi:type="tranSales:TransactionSearchRow" xmlns:tranSales="urn:sales_2014_1.transactions.webservices.netsuite.com">
<tranSales:basic xmlns:platformCommon="urn:common_2014_1.platform.webservices.netsuite.com">
<platformCommon:dateCreated>
<platformCore:searchValue>2015-12-17T08:43:00.000-08:00</platformCore:searchValue>
</platformCommon:dateCreated>
<platformCommon:entity>
<platformCore:searchValue internalId="615"/>
</platformCommon:entity>
</tranSales:basic>
<tranSales:customerMainJoin xmlns:platformCommon="urn:common_2014_1.platform.webservices.netsuite.com">
<platformCommon:altName>
<platformCore:searchValue>Some Specific Customer</platformCore:searchValue>
</platformCommon:altName>
</tranSales:customerMainJoin>
<tranSales:itemJoin xmlns:platformCommon="urn:common_2014_1.platform.webservices.netsuite.com">
<platformCommon:itemId>
<platformCore:searchValue>Some Product</platformCore:searchValue>
</platformCommon:itemId>
</tranSales:itemJoin>
<tranSales:customSearchJoin xmlns:platformCommon="urn:common_2014_1.platform.webservices.netsuite.com">
<platformCommon:customizationRef internalId="167" scriptId="custrecord_itmfulfillmentid"/>
<platformCommon:searchRowBasic xsi:type="platformCommon:CustomRecordSearchRowBasic">
<platformCommon:recType internalId="25"/>
<platformCommon:customFieldList>
<platformCore:customField xsi:type="platformCore:SearchColumnStringCustomField" scriptId="custrecord_ssccbarcode" internalId="169">
<platformCore:searchValue>091736418</platformCore:searchValue>
</platformCore:customField>
</platformCommon:customFieldList>
</platformCommon:searchRowBasic>
</tranSales:customSearchJoin>
</platformCore:searchRow>
C# function:
private void testCustomJoinSearch() {
TransactionSearchAdvanced transSearchAdv = new TransactionSearchAdvanced
{
savedSearchScriptId = "customsearch_savedSearchID"
};
SearchResult searchResult = _service.search(transSearchAdv);
if (searchResult.status.isSuccess)
{
Console.WriteLine("Search Success");
foreach (TransactionSearchRow transSearchRow in searchResult.searchRowList)
{
// declare vars
string transInternalID = "";
string ssccBarcode = "";
//normal field
transInternalID = transSearchRow.basic. internalId[0].searchValue.internalId.ToString();
//joined and custom field ? Not sure this loop is correct
foreach (CustomSearchRowBasic customBasicSearchRow in transSearchRow.customSearchJoin)
{
// ????
};
Console.WriteLine("transInternalID {0}", transInternalID);
Console.WriteLine("ssccBarcode {0}", ssccBarcode);
} // end main search row
}
else
{
Console.WriteLine("Search Failure");
Console.WriteLine(searchResult.status.statusDetail);
}
}

Try xml linq. I fixed your xml that was missing some namespace definitions so I added root and then closed the end tags platformCore:searchRow and root.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication70
{
class Program
{
static void Main(string[] args)
{
string xml =
"<?xml version=\"1.0\" encoding=\"utf-8\" ?>" +
"<Root xmlns:platformCore=\"abc\" xmlns:xsi=\"def\">" +
"<platformCore:searchRow xsi:type=\"tranSales:TransactionSearchRow\" xmlns:tranSales=\"urn:sales_2014_1.transactions.webservices.netsuite.com\">" +
"<tranSales:basic xmlns:platformCommon=\"urn:common_2014_1.platform.webservices.netsuite.com\">" +
"<platformCommon:dateCreated>" +
"<platformCore:searchValue>2015-12-17T08:43:00.000-08:00</platformCore:searchValue>" +
"</platformCommon:dateCreated>" +
"<platformCommon:entity>" +
"<platformCore:searchValue internalId=\"615\"/>" +
"</platformCommon:entity>" +
"</tranSales:basic>" +
"<tranSales:customerMainJoin xmlns:platformCommon=\"urn:common_2014_1.platform.webservices.netsuite.com\">" +
"<platformCommon:altName>" +
"<platformCore:searchValue>Some Specific Customer</platformCore:searchValue>" +
"</platformCommon:altName>" +
"</tranSales:customerMainJoin>" +
"<tranSales:itemJoin xmlns:platformCommon=\"urn:common_2014_1.platform.webservices.netsuite.com\">" +
"<platformCommon:itemId>" +
"<platformCore:searchValue>Some Product</platformCore:searchValue>" +
"</platformCommon:itemId>" +
"</tranSales:itemJoin>" +
"<tranSales:customSearchJoin xmlns:platformCommon=\"urn:common_2014_1.platform.webservices.netsuite.com\">" +
"<platformCommon:customizationRef internalId=\"167\" scriptId=\"custrecord_itmfulfillmentid\"/>" +
"<platformCommon:searchRowBasic xsi:type=\"platformCommon:CustomRecordSearchRowBasic\">" +
"<platformCommon:recType internalId=\"25\"/>" +
"<platformCommon:customFieldList>" +
"<platformCore:customField xsi:type=\"platformCore:SearchColumnStringCustomField\" scriptId=\"custrecord_ssccbarcode\" internalId=\"169\">" +
"<platformCore:searchValue>091736418</platformCore:searchValue>" +
"</platformCore:customField>" +
"</platformCommon:customFieldList>" +
"</platformCommon:searchRowBasic>" +
"</tranSales:customSearchJoin>" +
"</platformCore:searchRow>" +
"</Root>";
XDocument doc = XDocument.Parse(xml);
string searchvalue = doc.Descendants().Where(x => x.Name.LocalName == "customSearchJoin")
.Descendants().Where(y => y.Name.LocalName == "searchValue").Select(z => (string)z).FirstOrDefault();
}
}
}

I believe it is something like this:
foreach (CustomSearchRowBasic customBasicSearchRow in transSearchRow.customSearchJoin) {
// ????
CustomRecordSearchRowBasic itmfulfillmentidRecord = customBasicSearchRow.searchRowBasic as CustomRecordSearchRowBasic;
foreach(SearchColumnCustomField customField in itmfulfillmentidRecord.customFieldList) {
if (customField.scriptId == "custrecord_ssccbarcode") {
SearchColumnStringCustomField stringField = customField as SearchColumnStringCustomField;
string itmfulfillmentid = stringField.searchValue;
}
}
}

NullReferenceException being thrown

I am a beginner in C#.NET and we were tasked to create an online banking system in which transactions and login data are stored in an array of class. Although I am slowly getting a grasp of the whole array-of-class concept, it seems that I am stuck in saving the login data to an array of class. Here is my program:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using BankTransaction;
namespace LabExam1
{
public partial class Registration : Form
{
Transactions trans = new Transactions();
int number = 10000;
int x = 0;
const int size = 100;
Transactions[] loginData = new Transactions[size];
public void saveLoginData()
{
loginData[x].Username = trans.createUserName(txtFname.Text, txtLname.Text, txtMi.Text);
loginData[x].Password = txtPass.Text;
x++;
}
public Registration()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
cboType.SelectedIndex = 0;
}
private void btnRegister_Click(object sender, EventArgs e)
{
if (txtFname.Text == "" || txtLname.Text == ""|| txtMi.Text == "" || txtPass.Text == "")
{
MessageBox.Show("Please fill up all required fields!", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
if (cboType.SelectedIndex == 0)
{
number++;
loginData[x] = new Transactions();
saveLoginData();
MessageBox.Show("Generated Username: " + loginData[x].Username + number + "\n" + "Please do not share this Information to anyone!");
this.Hide();
Transaction tr = new Transaction();
tr.ShowDialog();
}
if (cboType.SelectedIndex == 1)
{
if (nudDeposit.Value < 2500.00m)
{
MessageBox.Show("The initial deposit for your account type is insufficient", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
number++;
loginData[x] = new Transactions();
saveLoginData();
MessageBox.Show("Generated Username: " + loginData[x].Username + number + "\n" + "Please do not share this Information to anyone!");
this.Hide();
Transaction tr = new Transaction();
tr.ShowDialog();
}
}
if (cboType.SelectedIndex == 2)
{
if (nudDeposit.Value < 3000.00m)
{
MessageBox.Show("The initial deposit for your account type is insufficient", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
number++;
loginData[x] = new Transactions();
saveLoginData();
MessageBox.Show("Generated Username: " + loginData[x].Username + number + "\n" + "Please do not share this Information to anyone!");
this.Hide();
Transaction tr = new Transaction();
tr.ShowDialog();
}
}
}
}
private void btnExit_Click(object sender, EventArgs e)
{
Application.Exit();
}
}
}
I am getting an error on this part which throws the nullReferenceException:
MessageBox.Show("Generated Username: " + loginData[x].Username + number + "\n" + "Please do not share this Information to anyone!");
Here is my class definition:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BankTransaction
{
public class Transactions
{
String username, password;
#region forArrayOfClassLogin
public String Password
{
get { return password; }
set { password = value; }
}
public String Username
{
get { return username; }
set { username = value; }
}
#endregion
public String createUserName(String fname, String lname, String mi)
{
String firstString = fname[0].ToString();
String secondString = mi[0].ToString();
String thirdString = lname[0].ToString();
String uname = firstString + secondString + thirdString;
return uname;
}
public void setBalance(String type, decimal initialBalance)
{
}
public String getUserName()
{
return username;
}
public String setPassword(String pass)
{
return password = pass;
}
public String getPassword()
{
return password;
}
}
}
Any help would be greatly appreciated. Thanks in advance.

You need to use loginData[x -1] as you have increment the value of x in saveLoginData()
MessageBox.Show("Generated Username: " + loginData[x -1].Username + number + "\n" + "Please do not share this Information to anyone!");

The issue seems to be in line "x++;" in the function saveLoginData().
You are declaring the X as member level variable, with X=0.
And as you increment the value of x in "saveLoginData()" function it becomes X=1, then while trying to access the array in parent function, the value of X is 1 now, but your array does not has any value stored for that index, which results in the exception.

In saveLoginData you're doing x++ at the end,
When you refer to loginData[x].Username in your message, x is not the same as it was when you setup loginData[x] = new Transactions(); and so loginData[x] will be null at that moment.

String firstString = fname[0].ToString();
String secondString = mi[0].ToString();
String thirdString = lname[0].ToString();
insted of above line try doing
String firstString = fname;
String secondString = mi;
String thirdString = lname;
Please refer below link for more details.
http://msdn.microsoft.com/en-us/library/ms228362.aspx

loginData[x] = new Transactions();
saveLoginData();
MessageBox.Show("Generated Username: " + loginData[x].Username + number + "\n" + "Please do not share this Information to anyone!");
The problem here is that the call to saveLoginData() increments the value of x, so when you show the MessageBox, the you're pointing to the next element in loginData, which is uninitialized.
This is a good illustration as to why you should be wary of using global variables. It's not obvious saveLoginData would modify x, which is probably why you made the mistake in the first place.
Also, if this weren't an exercise, I would recommend using List<Transactions> instead of an array, because it makes adding elements easier; you don't have to keep track of the number of elements yourself.
Finally, this fragment appears several times in your code:
number++;
loginData[x] = new Transactions();
saveLoginData();
MessageBox.Show("Generated Username: " + loginData[x].Username + number + "\n" + "Please do not share this Information to anyone!");
this.Hide();
Transaction tr = new Transaction();
tr.ShowDialog();
It would be better to turn this into a method which you would then call several times.

The Think is whenever we getting null reference .. it mean that it has not memory for that ..
so debug each and every line you can find the solution for that .. otherwise before using the properties put null check condition

Using Office.Interop, certain Powerpoint filenames won't convert

I have a program that converts .ppt or pptx files to png's using C# and the Microsoft.Office.Interop stuff.
It works most of the time, but under certain circumstances, it seems to fail on specific filenames for some nondescript reason.
HRESULT E_FAIL at ... Presentations.Open
It'll fail on CT_Stress_Test - Copy (16).pptx and CT_Stress_Test - Copy (11).pptx It works for (2) thru (19), but fails on only these two. My question is why?
If I were to make copies of these copies, or rename them to something else, it'll convert just fine, so I think it might have something to do with the filename.
I have the same conversion program running on my server and my local machine. My local machine (Win 7) converts the problem files just file. It's only on the server (Win 2008) that I have problems with these two filenames.
EDIT: I've found another number that doesn't work: (38)
EDIT: I formatted the strings with Path functions, and that didn't help.
EDIT: I was able to fix it by trimming all the spaces from the file names. I still want to know why this happens, though.
Here's the program:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.IO;
using Microsoft.Office.Core;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using System.Diagnostics;
using System.Timers;
using System.Security.Permissions;
using System.Collections.Concurrent;
namespace converter
{
class Program
{
public static int threadLimit=0;
public static string inDir;
public static string outDir;
public static string procDir;
public static Thread[] converterThreads;
public static BlockingCollection<string> todo;
static void Main(string[] args)
{
todo = new BlockingCollection<string>();
inDir = args[0];
outDir = args[1]+"\\";
procDir = args[2]+"\\";
Int32.TryParse(args[3],out threadLimit);
converterThreads = new Thread[threadLimit];
FileSystemWatcher watcher = new FileSystemWatcher(inDir); //Watcher "thread"
watcher.Filter = "*.ppt*";
watcher.NotifyFilter = watcher.NotifyFilter | NotifyFilters.CreationTime;
watcher.IncludeSubdirectories = false;
watcher.Created += new FileSystemEventHandler(fileChanged);
watcher.EnableRaisingEvents = true;
//Create consumer threads
for(var i=0;i<threadLimit;i++)
{
Conversion con = new Conversion();
converterThreads[i] = new Thread(new ThreadStart(con.watchCollection));
converterThreads[i].Start();
}
//stay open
Console.ReadLine();
}
//Producer
private static void fileChanged(object sender, FileSystemEventArgs e)
{
if(!(e.FullPath.Contains("~$"))){ //Ignore temp files
Console.WriteLine("found =" + e.FullPath);
todo.Add(e.FullPath);
}
}
}
class Logger{
static void toLog(String msg)
{
//TODO: log file
}
}
//Consumer
class Conversion
{
String input;
String output;
String outDir;
String process;
String nameWith;
String nameWithout;
string dir;
static List<CorruptFile> cFiles = new List<CorruptFile>();
int retryLimit = 20;
public Conversion()
{
this.outDir = Program.outDir;
this.process = Program.procDir;
}
//Continually watches collection for files to take.
public void watchCollection()
{
while (true)
{
System.Threading.Thread.Sleep(1000);
try
{
dir = Program.todo.Take();
if (dir != null)
{
this.nameWithout = Path.GetFileNameWithoutExtension(dir);
this.nameWith = Path.GetFileName(dir);
this.output = Path.GetDirectoryName(dir) + Path.DirectorySeparatorChar + Path.GetFileNameWithoutExtension(dir);
Console.WriteLine("output = " + this.output);
this.input = Path.GetFullPath(dir);
Console.WriteLine("thread took " + this.nameWith);
convertPpt();
}
}
catch (InvalidOperationException) { }
}
}
public void convertPpt()
{
try
{
var app = new PowerPoint.Application();
var pres = app.Presentations;
var file = pres.Open(input, MsoTriState.msoFalse, MsoTriState.msoFalse, MsoTriState.msoFalse);
file.SaveAs(output, Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsPNG, MsoTriState.msoTrue);
file.Close();
app.Quit();
Console.WriteLine("file converted " + input);
moveFile();
}
catch (Exception e)
{
Console.WriteLine("convertPpt failed " + e);
try
{
foreach (Process proc in Process.GetProcessesByName("POWERPNT"))
{
proc.Kill();
Console.WriteLine("process killed");
}
}
catch (Exception e3)
{
}
try
{
if (!(cFiles.Any(x => x.fileName == dir)))
{
cFiles.Add(new CorruptFile(dir));
Console.WriteLine("file added to watch list");
Program.todo.Add(dir);
}
else
{
var found = cFiles.Find(x => x.fileName == dir);
Console.WriteLine("in watch list = " + found.fileName);
if (found.numRetry >= retryLimit)
{
Console.WriteLine(nameWith+ " to be ignored");
try
{
cFiles.Remove(found);
Console.WriteLine("File ignored");
System.Threading.Thread.Sleep(300);
Console.WriteLine("Moving: " + input);
if (File.Exists("C:\\corrupt\\" + nameWith))
{
File.Replace(input, "C:\\corrupt\\" + nameWith, null);
Console.WriteLine("file moved to C:\\corrupt\\");
}
else
{
File.Move(input, "C:\\corrupt\\" + nameWith);
Console.WriteLine("file moved to C:\\corrupt\\");
}
}
catch(Exception e5)
{
Console.WriteLine("could not move file " + e5);
}
}
else
{
Console.WriteLine("retrying file on watch list");
found.numRetry++;
Program.todo.Add(dir);
}
}
}
catch { }
}
moveDir();
}
public void moveFile()
{
Console.WriteLine("moving" + input);
try
{
System.Threading.Thread.Sleep(500);
Console.WriteLine(string.Format("moving {0} to {1}", input, process + nameWith));
if (File.Exists(process + nameWith))
{
File.Replace(input, process + nameWith, null);
}
else
{
File.Move(input, process + nameWith);
}
}
catch (Exception e)
{
Console.WriteLine(string.Format("Unable to move the file {0} ", input) + e);
try
{
foreach (Process proc in Process.GetProcessesByName("POWERPNT"))
{
proc.Kill();
}
}
catch (Exception e3)
{
}
}
}
public void moveDir()
{
if(!Directory.Exists(output)){
return;
}
Console.WriteLine("moving dir " + output);
try
{
Console.WriteLine(string.Format("moving dir {0} to {1} ", output, outDir + nameWithout));
if (Directory.Exists(outDir + nameWithout))
{
Directory.Delete(outDir + nameWithout, true);
}
if (Directory.Exists(output))
{
Directory.Move(output, outDir + nameWithout);
}
}
catch (Exception e)
{
Console.WriteLine(string.Format("Unable to move the directory {0} ", output) + e);
try
{
foreach (Process proc in Process.GetProcessesByName("POWERPNT"))
{
proc.Kill();
}
}
catch (Exception e3)
{
}
}
}
}
class CorruptFile{
public string fileName;
public int numRetry;
public CorruptFile(string fn){
fileName = fn;
}
}
}

First up is a warning from Microsoft in this KB article here. Money quote is:
Microsoft does not currently recommend, and does not support,
Automation of Microsoft Office applications from any unattended,
non-interactive client application or component (including ASP,
ASP.NET, DCOM, and NT Services), because Office may exhibit unstable
behaviour and/or deadlock when Office is run in this environment.
Next question is why not use OpenXML for this? Here's a simple sample to get you started which counts the number of slides in a deck.
using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Packaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
namespace OpenXmlDemo
{
class PptOpenXmlDemo
{
public int PptGetSlideCount(string fileName)
{
// Return the number of slides in a PowerPoint document.
const string documentRelationshipType = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument";
const string presentationmlNamespace = "http://schemas.openxmlformats.org/presentationml/2006/main";
int returnValue = 0;
using (Package pptPackage = Package.Open(fileName, FileMode.Open, FileAccess.Read))
{
// Get the main document part (presentation.xml).
foreach (System.IO.Packaging.PackageRelationship relationship in pptPackage.GetRelationshipsByType(documentRelationshipType))
{
// There should be only a single relationship that refers to the document.
Uri documentUri = PackUriHelper.ResolvePartUri(new Uri("/", UriKind.Relative), relationship.TargetUri);
PackagePart documentPart = pptPackage.GetPart(documentUri);
// Get the slide part from the package.
if (documentPart != null)
{
XmlDocument doc = new XmlDocument();
doc.Load(documentPart.GetStream());
// Manage namespaces to perform XPath queries.
XmlNamespaceManager nsManager = new XmlNamespaceManager(doc.NameTable);
nsManager.AddNamespace("p", presentationmlNamespace);
// Retrieve the list of slide references from the document.
XmlNodeList nodes = doc.SelectNodes("//p:sldId", nsManager);
if (nodes != null)
{
returnValue = nodes.Count;
}
}
// There is only one officeDocument part. Get out of the loop now.
break;
}
}
return returnValue;
}
}
}

C# and Metadata File Errors

I've created my own little c# compiler using the tutorial on MSDN, and it's not working properly. I get a few errors, then I fix them, then I get new, different errors, then I fix them, etc etc.
The latest error is really confusing me.
---------------------------
---------------------------
Line number: 0, Error number: CS0006, 'Metadata file 'System.Linq.dll' could not be found;
---------------------------
OK
---------------------------
I do not know what this means.
Can somebody please explain what's going on here?
Here is my code.
MY SAMPLE C# COMPILER CODE:
using System;
namespace JTM
{
public class CSCompiler
{
protected string ot,
rt,
ss, es;
protected bool rg, cg;
public string Compile(String se, String fe, String[] rdas, String[] fs, Boolean rn)
{
System.CodeDom.Compiler.CodeDomProvider CODEPROV = System.CodeDom.Compiler.CodeDomProvider.CreateProvider("CSharp");
ot =
fe;
System.CodeDom.Compiler.CompilerParameters PARAMS = new System.CodeDom.Compiler.CompilerParameters();
// Ensure the compiler generates an EXE file, not a DLL.
PARAMS.GenerateExecutable = true;
PARAMS.OutputAssembly = ot;
foreach (String ay in rdas)
{
if (ay.Contains(".dll"))
PARAMS.ReferencedAssemblies.Add(ay);
else
{
string refd = ay;
refd = refd + ".dll";
PARAMS.ReferencedAssemblies.Add(refd);
}
}
System.CodeDom.Compiler.CompilerResults rs = CODEPROV.CompileAssemblyFromFile(PARAMS, fs);
if (rs.Errors.Count > 0)
{
foreach (System.CodeDom.Compiler.CompilerError COMERR in rs.Errors)
{
es = es +
"Line number: " + COMERR.Line +
", Error number: " + COMERR.ErrorNumber +
", '" + COMERR.ErrorText + ";" +
Environment.NewLine + Environment.NewLine;
}
}
else
{
// Compilation succeeded.
es = "Compilation Succeeded.";
if (rn) System.Diagnostics.Process.Start(ot);
}
return es;
}
}
}
... And here is the app that passes the code to the above class:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string[] f = { "Form1.cs", "Form1.Designer.cs", "Program.cs" };
string[] ra = { "System.dll", "System.Windows.Forms.dll", "System.Data.dll", "System.Drawing.dll", "System.Deployment.dll", "System.Xml.dll", "System.Linq.dll" };
JTS.CSCompiler CSC = new JTS.CSCompiler();
MessageBox.Show(CSC.Compile(
textBox1.Text, #"Test Application.exe", ra, f, false));
}
}
}
So, as you can see, all the using directives are there. I don't know what this error means. Any help at all is much appreciated.
Thank you

Solution:
Add this:
PARAMS.ReferencedAssemblies.Add(typeof(System.Xml.Linq.Extensions).Assembly.Location);
So the code now looks like this:
namespace JTM
{
public class CSCompiler
{
protected string ot,
rt,
ss, es;
protected bool rg, cg;
public string Compile(String se, String fe, String[] rdas, String[] fs, Boolean rn)
{
System.CodeDom.Compiler.CodeDomProvider CODEPROV = System.CodeDom.Compiler.CodeDomProvider.CreateProvider("CSharp");
ot =
fe;
System.CodeDom.Compiler.CompilerParameters PARAMS = new System.CodeDom.Compiler.CompilerParameters();
// Ensure the compiler generates an EXE file, not a DLL.
PARAMS.GenerateExecutable = true;
PARAMS.OutputAssembly = ot;
PARAMS.ReferencedAssemblies.Add(typeof(System.Xml.Linq.Extensions).Assembly.Location);
foreach (String ay in rdas)
{
if (ay.Contains(".dll"))
PARAMS.ReferencedAssemblies.Add(ay);
else
{
string refd = ay;
refd = refd + ".dll";
PARAMS.ReferencedAssemblies.Add(refd);
}
}
System.CodeDom.Compiler.CompilerResults rs = CODEPROV.CompileAssemblyFromFile(PARAMS, fs);
if (rs.Errors.Count > 0)
{
foreach (System.CodeDom.Compiler.CompilerError COMERR in rs.Errors)
{
es = es +
"Line number: " + COMERR.Line +
", Error number: " + COMERR.ErrorNumber +
", '" + COMERR.ErrorText + ";" +
Environment.NewLine + Environment.NewLine;
}
}
else
{
// Compilation succeeded.
es = "Compilation Succeeded.";
if (rn) System.Diagnostics.Process.Start(ot);
}
return es;
}
}
}