C#动态创建类

C#动态创建类

public static void CreatNewClass(int i, int j)
{
	StringBuilder sbCode = new StringBuilder();
	sbCode.AppendLine("using System;");
	sbCode.AppendLine("namespace Entity");
	sbCode.AppendLine("{");
	sbCode.AppendLine("     public class Test");
	sbCode.AppendLine("     {");
	sbCode.AppendLine("         public int i;");
    sbCode.AppendLine("         public int j;");
	sbCode.AppendLine("     }");
	sbCode.AppendLine("}");
	// 编译器
	CodeDomProvider cdp = CodeDomProvider.CreateProvider("C#");
    // 编译器的参数
	CompilerParameters cp = new CompilerParameters();
    cp.ReferencedAssemblies.Add("System.dll");
	cp.GenerateExecutable = false;
	cp.GenerateInMemory = true;
	CompilerResults cr = cdp.CompileAssemblyFromSource(cp, sbCode.ToString());
	if (!cr.Errors.HasErrors)
	{
		//反射实例化数据库字段
		Assembly ass = cr.CompiledAssembly;
		object DataInfoEntity = ass.CreateInstance("Entity.Test");
		//获取test类
		Type type = ass.GetType("Entity.Test");
		//赋值
		FieldInfo infoI = type.GetField("i");
		infoI.SetValue(DataInfoEntity, i);
		FieldInfo infoJ = type.GetField("j");
		infoJ.SetValue(DataInfoEntity, j);
		//获取值
		int intI = (int)infoI.GetValue(DataInfoEntity);
		int intJ = (int)infoJ.GetValue(DataInfoEntity);
		Console.WriteLine("j+i结果：" + (intI + intJ));
	}
	else
	{
		Console.WriteLine("编译失败");
	}	           
}

调用

static void Main()
{
	CreatNewClass(8,8);
}