[C#] CodeDOM Invocation Example

[AceInfinity]

Features:

• • Compile from textbox or file
  • Change .NET Framework version
  • Change reference assemblies

Just a quick example i've put together as we haven't had much around here on CodeDOM at all... With this setup, and I haven't tested yet even though I should have, unsafe code context should work as well. :)

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 System.IO;
using System.Reflection;
using System.CodeDom;
using System.CodeDom.Compiler;
using Microsoft.CSharp;

namespace SourceRunner
{
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();
		}

		private void Form1_Load(object sender, EventArgs e)
		{
			comboBox1.SelectedIndex = 2;
			textBox1.Text = "using System;\r\n" +
							"using System.Collections.Generic;\r\n" +
							"using System.ComponentModel;\r\n" +
							"using System.Data;\r\n" +
							"using System.Drawing;\r\n" +
							"using System.Linq;\r\n" +
							"using System.Text;\r\n" +
							"using System.Windows.Forms;\r\n" +
							"\r\n" +
							"namespace CDNamespace\r\n" +
							"{\r\n" +
							"	public class CodeClass\r\n" +
							"	{\r\n" +
							"		public void Main()\r\n" +
							"		{\r\n" +
							"			//Entry Point\r\n" +
							"		}\r\n" +
							"	}\r\n" +
							"}";
			textBox1.SelectionStart = 0;
		}

		private void button1_Click(object sender, EventArgs e)
		{
			RunCode();
		}

		private void RunCode()
		{
			string ver = "v3.5";

			switch (comboBox1.SelectedIndex)
			{
				case 0:
					ver = "v2.0";
					break;
				case 1:
					ver = "v3.0";
					break;
				case 2:
					ver = "v3.5";
					break;
				case 3:
					ver = "v4.0";
					break;
			}

			string[] AssemInfo = File.ReadAllLines(Application.StartupPath + "\\ReferenceAssemblies.txt").Where(l => !l.StartsWith(@"//") && l.Contains(".dll")).ToArray();
			Dictionary providerOptions = new Dictionary { { "CompilerVersion", ver } };
			CSharpCodeProvider CSCodeProvider = new CSharpCodeProvider(providerOptions);

			CompilerParameters CParams = new CompilerParameters();
			CParams.GenerateInMemory = true;
			CParams.CompilerOptions = "/optimize /unsafe";
			CParams.ReferencedAssemblies.AddRange(AssemInfo);
			//CParams.TempFiles = new TempFileCollection(Application.StartupPath + "\\TempFiles", false);

			string CodePart = radioButton1.Checked ? File.ReadAllText(Application.StartupPath + "\\CompileCode.txt") : textBox1.Text;

			CompilerResults objCompileResults = CSCodeProvider.CompileAssemblyFromSource(CParams, CodePart);
			if (objCompileResults.Errors.HasErrors)
			{
				string[] Errors = objCompileResults.Errors.Cast().Select(e => string.Format("Error [Line: {0}]: {1}", e.Line.ToString(), e.ErrorText)).ToArray();
				MessageBox.Show(string.Join("\n", Errors), string.Format("[{0}] Compiler Errors", Errors.Count()), MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}

			object AssemblyInst = objCompileResults.CompiledAssembly.CreateInstance("CDNamespace.CodeClass");

			try
			{
				if (AssemblyInst != null)
					AssemblyInst.GetType().InvokeMember("Main", System.Reflection.BindingFlags.InvokeMethod, null, AssemblyInst, null);
				else
					MessageBox.Show("Cannot create instance of assembly...", "Null Object", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
			}
			catch (Exception ex)
			{
				MessageBox.Show(string.Format("An error had occurred:\n\n{0}", ex.Message), "InvokeMember Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
			}
		}
	}
}

For the text files which have to be in the same working directory as the app at runtime:

CompileCode.txt:

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 CDNamespace
{
	public class CodeClass
	{
		public void Main()
		{
			//Entry point
		}
	}
}

ReferenceAssemblies.txt: *I just added a whole bunch of crap here after I added in the main ones.

//This is a list of Referenced Assemblies

mscorlib.dll
System.dll
System.Core.dll
System.Data.dll
System.Drawing.dll
System.Windows.Forms.dll
System.Configuration.dll
System.Xml.dll
System.Security.dll
System.Web.RegularExpressions.dll
System.Runtime.Serialization.Formatters.Soap.dll

Download: To the one I compiled if you can't compile your own here.
*See Attachment*

 

[AceInfinity]

EDIT: Yep, unsafe code works too

:beerchug2: