C#动态编译的小程序
using System;
using System.Text;
using System.Windows;
using System.Windows.Media;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Reflection;
using System.IO;
namespace MyWpfApplication
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void DynamicCompile_Click(object sender, RoutedEventArgs e)
{
CodeDriver driver = new CodeDriver();
bool isError;
outputTextBox.Text = driver.CompileAndRun(inputTextBox.Text, out isError);
if (isError)
{
outputTextBox.Background = Brushes.Red;
}
else
{
outputTextBox.Background = Brushes.White;
}
}
}
public class CodeDriver
{
private string prefix = "using System;" +
"public static class Driver" +
"{" +
"public static void Run()" +
"{";
private string postfix =
"}" +
"}";
public string CompileAndRun(string input, out bool hasError)
{
hasError = false;
string returnData = null;
CompilerResults results = null;
using (CSharpCodeProvider provider = new CSharpCodeProvider())
{
CompilerParameters options = new CompilerParameters();
options.GenerateInMemory = true;
StringBuilder sb = new StringBuilder();
sb.Append(prefix);
sb.Append(input);
sb.Append(postfix);
results = provider.CompileAssemblyFromSource(options, sb.ToString());
}
if (results.Errors.HasErrors)
{
hasError = true;
StringBuilder errorMessage = new StringBuilder();
foreach (CompilerError error in results.Errors)
{
errorMessage.AppendFormat("{0} {1}/n", error.Line, error.ErrorText);
}
returnData = errorMessage.ToString();
}
else
{
TextWriter temp = Console.Out;
StringWriter writer = new StringWriter();
Console.SetOut(writer);
Type driverType = results.CompiledAssembly.GetType("Driver");
driverType.InvokeMember("Run", BindingFlags.InvokeMethod | BindingFlags.Static | BindingFlags.Public, null, null, null);
Console.SetOut(temp);
returnData = writer.ToString();
}
return returnData;
}
}
}