动态生成代码程序收集NO1：
using
System;
using
System.Collections.Generic;
using
System.Reflection;
using
System.Text;
using
System.CodeDom;
using
System.CodeDom.Compiler;
namespace
csrepl {
class
Program {
static
string
funcprefix
=
"
using System;
"
+
"
public delegate void Proc();
"
+
"
public class Wrapper {
"
+
"
public static object Set(string name, object value) {
"
+
"
AppDomain.CurrentDomain.SetData(name, value);
"
+
"
return value;
"
+
"
}
"
+
"
public static object Get(string name) {
"
+
"
return AppDomain.CurrentDomain.GetData(name);
"
+
"
}
"
+
"
public static object Invoke(Proc proc) {
"
+
"
proc();
"
+
"
return null;
"
+
"
}
"
+
"
public static object Eval() { return
"
;
static
string
funcsuffix
=
"
; } }
"
;
static
string
StringEval(
string
expr) {
string
program
=
funcprefix
+
expr
+
funcsuffix; ICodeCompiler compiler
=
CodeDomProvider.CreateProvider(
"
C#
"
).CreateCompiler(); CompilerParameters cp
=
new
CompilerParameters(); cp.GenerateExecutable
=
false
; cp.GenerateInMemory
=
true
; CompilerResults results
=
compiler.CompileAssemblyFromSource(cp, program);
if
(results.Errors.HasErrors) {
if
(results.Errors[
0
].ErrorNumber
==
"
CS0029
"
)
return
StringEval(
"
Invoke(delegate {
"
+
expr
+
"
; })
"
);
return
results.Errors[
0
].ErrorText; }
else
{ Assembly assm
=
results.CompiledAssembly; Type target
=
assm.GetType(
"
Wrapper
"
); MethodInfo method
=
target.GetMethod(
"
Eval
"
);
object
result
=
method.Invoke(
null
,
null
);
return
result
==
null
?
null
: result.ToString(); } }
static
void
Main(
string
[] args) {
while
(
true
) { Console.Write(
"
>
"
); Console.Out.Flush();
string
expr
=
Console.ReadLine();
if
(expr
==
null
)
break
;
try
{
string
result
=
StringEval(expr); Console.WriteLine(result); }
catch
(TargetInvocationException ex) { Console.WriteLine(ex.InnerException.GetType().Name
+
"
:
"
+
ex.InnerException.Message); }
catch
(Exception ex) { Console.WriteLine(ex.GetType().Name
+
"
:
"
+
ex.Message); } } } } }
代码2：
private
void
Compiler(
string
code) { CompilerParameters vCompilerParameters
=
new
CompilerParameters(); vCompilerParameters.GenerateExecutable
=
false
; vCompilerParameters.GenerateInMemory
=
true
; vCompilerParameters.ReferencedAssemblies.Add(
"
System.Windows.Forms.dll
"
);
string
vSource
=
"
using System.Windows.Forms;\n
"
+
"
public class Temp\n
"
+
"
{\n
"
+
"
public void Test()\n
"
+
"
{\n
"
+
"
"
+
code
+
"
\n
"
+
"
}\n
"
+
"
}\n
"
; CompilerResults vCompilerResults
=
CodeDomProvider.CreateProvider(
"
CSharp
"
).CompileAssemblyFromSource(vCompilerParameters, vSource); Assembly vAssembly
=
vCompilerResults.CompiledAssembly;
object
vTemp
=
vAssembly.CreateInstance(
"
Temp
"
); MethodInfo vTest
=
vTemp.GetType().GetMethod(
"
Test
"
); vTest.Invoke(vTemp,
null
); }
string
code
=
"
int sum = 0;\nfor(int i = 0; i < 100; i++)\n{\nsum += i;\n}\nMessageBox.Show(sum.ToString());
"
; Compiler(code);
代码执行者1.0
功能：
在TextBox中输入一段C#代码，点击按钮即可运行该代码。
界面预览：
本程序源码参见上面动态编译的例子。
演示程序下载 ：
Demo
转载于:https://www.cnblogs.com/tuyile006/archive/2007/08/25/866152.html
相关资源：C#微软培训教材（高清PDF）
