我想获取动态编译代码的标准输出。
我的代码:
using System;
using System.Collections.Generic;
using System.Reflection;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.IO;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
var source = File.ReadAllText("form.cs");
Dictionary<string, string> providerOptions = new Dictionary<string, string>
{
{"CompilerVersion", "v4.0"}
};
CSharpCodeProvider provider = new CSharpCodeProvider(providerOptions);
CompilerParameters compilerParams = new CompilerParameters
{
GenerateInMemory = true,
GenerateExecutable = false,
ReferencedAssemblies = {"System.dll" ,"mscorlib.dll"}
};
CompilerResults results = provider.CompileAssemblyFromSource(compilerParams, source);
Assembly assembly = results.CompiledAssembly;
Type program = assembly.GetType("program.TestPerson");
MethodInfo main = program.GetMethod("Main");
var outp= main.Invoke(null, null);
//Console.WriteLine(outp);
Console.ReadLine();
}
}
}
form.cs的内容:
using System;
namespace program {
public class TestPerson
{
public static void Main()
{
var person1 = new Person();
Console.WriteLine(person1.Name);
}
}
}
public class Person
{
public Person()
{
Name = "unknown";
}
public Person(string name)
{
Name = name;
}
public string Name { get;set; }
public override string ToString()
{
return Name;
}
}
我真正想要的是在父应用程序的变量中编译后拥有 form.cs (Console.WriteLine) 的标准输出,顺便说一句,我不想将代码构建到文件中并将其作为进程运行并阅读它的输出。 还假设 form.cs 的内容不可编辑。
最佳答案
main
可能让您感到困惑,但正如我在评论中所写,您的动态编译代码不会在其自己的进程中运行(这也可以实现,但要复杂得多), 因此它没有自己的输出。 main
方法只是当前进程中默认 AppDomain 中另一个类中的另一个方法。这意味着它将写入您的外部托管 进程的控制台。您必须使用 Console.SetOut
捕获该输出。请参阅以下 linqpad 代码段:
string source = @"using System;
namespace program {
public class TestPerson
{
public static void Main()
{
Console.WriteLine(""TEST"");
}
}
}";
void Main()
{
Dictionary<string, string> providerOptions = new Dictionary<string, string>
{
{"CompilerVersion", "v4.0"}
};
CSharpCodeProvider provider = new CSharpCodeProvider(providerOptions);
CompilerParameters compilerParams = new CompilerParameters
{
GenerateInMemory = true,
GenerateExecutable = false,
ReferencedAssemblies = { "System.dll", "mscorlib.dll" }
};
CompilerResults results = provider.CompileAssemblyFromSource(compilerParams, source);
Assembly assembly = results.CompiledAssembly;
Type program = assembly.GetType("program.TestPerson");
MethodInfo main = program.GetMethod("Main");
var sb = new StringBuilder();
var writer = new StringWriter(sb);
Console.SetOut(writer);
var outp = main.Invoke(null, null);
sb.ToString().Dump(); // this Dump is from linqpad, do what you want with the StringBuilder content
Console.ReadLine();
}
如果你想写到原始标准输出,先保存它,像这样:
...
var oldOut = Console.Out;
Console.SetOut(writer);
var outp = main.Invoke(null, null);
oldOut.WriteLine($"The result is: {sb.ToString()}");
关于C#动态编译器,在内存中编译时获取标准输出,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54007097/