[英]passing class types to runtime compiled code C#
I am trying to read and compile an external file (it's in a string constant for now) 我正在尝试读取和编译外部文件(目前位于字符串常量中)
I can use basic primitives in the external code but I can't seem to figure out how to pass it a class type without it getting angry -heres what I have (excluding the using lines) 我可以在外部代码中使用基本原语,但似乎无法弄清楚如何在不生气的情况下将其传递给类类型-这就是我所拥有的(不包括使用行)
class myClass
{
public int x;
public myClass(int n)
{
x = n;
}
}
class Program
{
static void Main(string[] args)
{
string source =
@"
namespace ConsoleApplication1
{
public class Bar
{
public int getNumber(myClass c)
{
return c.x;
}
}
}";
Dictionary<string, string> providerOptions = new Dictionary<string, string>
{
{"CompilerVersion", "v3.5"}
};
CSharpCodeProvider provider = new CSharpCodeProvider(providerOptions);
CompilerParameters compilerParams = new CompilerParameters
{
GenerateInMemory = true,
GenerateExecutable = false
};
CompilerResults results = provider.CompileAssemblyFromSource(compilerParams, source);
if (results.Errors.Count != 0)
throw new Exception("Failed");
object o = results.CompiledAssembly.CreateInstance("ConsoleApplication1.Bar");
MethodInfo mi = o.GetType().GetMethod("getNumber");
object[] param = new object[1];
myClass c = new myClass(5);
param[0] = c;
int myInt = (int)mi.Invoke(o, param);
Console.Write(myInt);
Console.ReadLine();
}
}
Help would be appreciated 帮助将不胜感激
When I looked at your code it appears the problem is that your 'new' assembly (the string version) does not know about the currently executing assembly (same namespace or not). 当我查看您的代码时,似乎出现的问题是您的“新”程序集(字符串版本)不知道当前正在执行的程序集(名称空间是否相同)。 The solution is to reference the currently executing assembly.
解决方案是引用当前正在执行的程序集。 Add this line right after your compilerParams initialization:
在您的compilerParams初始化之后立即添加以下行:
compilerParams.ReferencedAssemblies.Add(Assembly.GetExecutingAssembly().Location);
Also, when I fired up your code I changed the myClass declaration to public. 另外,当我启动您的代码时,我将myClass声明更改为public。
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