C# Forms CSharpCodeProvider

string Output = "Veryfy.exe";
Dictionary<string, string> version = new Dictionary<string, string>();
version.Add("CompilerVersion", "v2.0");
CSharpCodeProvider codeProvider = new CSharpCodeProvider(version);
ICodeCompiler codeCompiler = codeProvider.CreateCompiler();
CompilerParameters cp = new CompilerParameters();
cp.GenerateExecutable = true;
cp.GenerateInMemory = false;
cp.MainClass = "Veryfy.Program";
cp.OutputAssembly =Output ;
cp.ReferencedAssemblies.Add("system.dll");
cp.ReferencedAssemblies.Add("system.windows.forms.dll");
cp.CompilerOptions = "/target:winexe";
CompilerResults cr = codeCompiler.CompileAssemblyFromSource(cp, Codes());
foreach (CompilerError item in cr.Errors)
{
MessageBox.Show(item.ErrorText);
}
}
string Codes()
{
string code = @"
//Codes
";
code = code.Replace('*', '\"');
return code;
}

when you use visual studio you click run (ctrl+f5) which shows you errors if any error is there if not then if it is a desktop app then produces exe file.

All these happens behind the scene , but if you have any source file and you want to show errors or want to comiple to exe on a button click then what will you do?

It is where you can use CSharpCodeProvider class (System.CodeDom.dll)

below example compiles the src code into an executable file, and any compilation errors are displayed to the console.

using System;
using System.IO;
using System.Globalization;
using System.CodeDom.Compiler;
using System.Text;
using Microsoft.CSharp;
using Microsoft.VisualBasic;
namespace CodeProviders
{
class CompileSample
{
[STAThread]
static void Main(string[] args)
{
if (args.Length > 0)
{
// First parameter is the source file name.
if (File.Exists(args[0]))
{
CompileExecutable(args[0]);
}
else
{
Console.WriteLine("Input source file not found - {0}",
args[0]);
}
}
else
{
Console.WriteLine("Input source file not specified on command line!");
}
}
public static bool CompileExecutable(String sourceName)
{
FileInfo sourceFile = new FileInfo(sourceName);
CodeDomProvider provider = null;
bool compileOk = false;
// Select the code provider based on the input file extension.
if (sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) == ".CS")
{
provider = CodeDomProvider.CreateProvider("CSharp");
}
else if (sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) == ".VB")
{
provider = CodeDomProvider.CreateProvider("VisualBasic");
}
else
{
Console.WriteLine("Source file must have a .cs or .vb extension");
}
if (provider != null)
{
// Format the executable file name.
// Build the output assembly path using the current directory
// and _cs.exe or _vb.exe.
String exeName = String.Format(@"{0}\{1}.exe",
System.Environment.CurrentDirectory,
sourceFile.Name.Replace(".", "_"));
CompilerParameters cp = new CompilerParameters();
// Generate an executable instead of
// a class library.
cp.GenerateExecutable = true;
// Specify the assembly file name to generate.
cp.OutputAssembly = exeName;
// Save the assembly as a physical file.
cp.GenerateInMemory = false;
// Set whether to treat all warnings as errors.
cp.TreatWarningsAsErrors = false;
// Invoke compilation of the source file.
CompilerResults cr = provider.CompileAssemblyFromFile(cp,
sourceName);
if(cr.Errors.Count > 0)
{
// Display compilation errors.
Console.WriteLine("Errors building {0} into {1}",
sourceName, cr.PathToAssembly);
foreach(CompilerError ce in cr.Errors)
{
Console.WriteLine(" {0}", ce.ToString());
Console.WriteLine();
}
}
else
{
// Display a successful compilation message.
Console.WriteLine("Source {0} built into {1} successfully.",
sourceName, cr.PathToAssembly);
}
// Return the results of the compilation.
if (cr.Errors.Count > 0)
{
compileOk = false;
}
else
{
compileOk = true;
}
}
return compileOk;
}
}
}

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh5y ago
you have below lines defined in your code, it is returning string which is wrong,it must return an array of source code (as string formatted) then , you wont have any bug in your code.
CompilerResults cr = codeCompiler.CompileAssemblyFromSource(cp, Codes());

public string[] Codes()
{
string[] arr=new string[];
string code = @"
//Codes
";
code = code.Replace('*', '\"');
arr.Add(code);
return arr;
}
Furkan Karagulle5y ago
1. string Output = "Veryfy.exe";
  Dictionary<string, string> version = new Dictionary<string, string>();
  version.Add("CompilerVersion", "v2.0");
  CSharpCodeProvider codeProvider = new CSharpCodeProvider(version);
  ICodeCompiler codeCompiler = codeProvider.CreateCompiler();
  CompilerParameters cp = new CompilerParameters();
  cp.GenerateExecutable = true;
  cp.GenerateInMemory = false;
  cp.MainClass = "Veryfy.Program";
  cp.OutputAssembly =Output ;
  cp.ReferencedAssemblies.Add("system.dll");
  cp.ReferencedAssemblies.Add("system.windows.forms.dll");
  cp.CompilerOptions = "/target:winexe";
  CompilerResults cr = codeCompiler.CompileAssemblyFromSource(cp, Codes());
  foreach (CompilerError item in cr.Errors)
  {
  MessageBox.Show(item.ErrorText);
  }
  }
  string Codes()
  {
  string code = @"
  //Codes
  ";
  code = code.Replace('*', '\"');
  return code;
  }
I was able to extract this code snippet with my research, but it doesn't work.
What went wrong
V2 : I don't know how relevant, but I get such a warning, is it relevant?
https://hizliresim.com/Q3LCT7