本文转载:http://www.cnblogs.com/StudyLife/archive/2013/03/11/2953516.html
本文不是基于B/S的 后台调用前台js方法,而是给你一段js方法字符串,让你在程序中直接解析这段方法,并调用方法得到想要的值。 首先要解析Js方法,可以用微软的msscript.ocx控件(Interop.MSScriptControl.dll)来解析js方法. 1.msscript.ocx下载的地址 http: //www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=D05FCF37-4D9F-4769-9442-0BCEEF907033
或者点击此处下载 Interop.MSScriptControl.dll
2.项目中引用 msscript.ocx 或者 Interop.MSScriptControl.dll 现在通过控件的一些方法可以解析js方法,并调用js方法返回值。 不过这儿可以将控件类的一些属性和方法封装成单独的类,方便自己调用。 封装成ScriptEngine类。 using
System;
using
MSScriptControl;
using
System.Text;
//导入js文件,导入js 方法字符串,然后执行js方法。 通过msscript.ocx控件执行JS脚本 ,先引用 Interop.MSScriptControl.dll //官网下载: 然后 引用 xxx.ocx就行了 http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=D05FCF37-4D9F-4769-9442-0BCEEF907033 namespace
csharp中执行js方法
{ class
script_run
{
/// <summary>
/// 脚本类型
/// </summary>
public
enum ScriptLanguage
{
/// <summary>
/// JScript脚本语言
/// </summary>
JScript,
/// <summary>
/// VBscript脚本语言
/// </summary>
VBscript,
/// <summary>
/// JavaScript脚本语言
/// </summary>
JavaScript
}
/// <summary>
/// 脚本运行错误代理
/// </summary>
public
delegate void RunErrorHandler();
/// <summary>
/// 脚本运行超时代理
/// </summary>
public
delegate void RunTimeoutHandler();
/// <summary>
/// ScriptEngine类
/// </summary>
public
class ScriptEngine
{
private
ScriptControl msc;
/// <summary>
/// 定义脚本运行错误事件
/// </summary>
public
event RunErrorHandler RunError;
/// <summary>
/// 定义脚本运行超时事件
/// </summary>
public
event RunTimeoutHandler RunTimeout;
/// <summary>
///构造函数 默认为 VBscript 脚本类型
/// </summary>
public
ScriptEngine()
: this (ScriptLanguage.VBscript)
{ }
/// <summary>
/// 构造函数
/// </summary>
/// <param name="language">脚本类型</param>
public
ScriptEngine(ScriptLanguage language)
{
this .msc = new
ScriptControlClass();
this .msc.UseSafeSubset = true ;
this .msc.Language = language.ToString();
((DScriptControlSource_Event) this .msc).Error += new
DScriptControlSource_ErrorEventHandler(OnError);
((DScriptControlSource_Event) this .msc).Timeout += new
DScriptControlSource_TimeoutEventHandler(OnTimeout);
}
/// <summary>
/// 运行Eval方法
/// </summary>
/// <param name="expression">表达式</param>
/// <param name="codeBody">函数体</param>
/// <returns>返回值object</returns>
public
object Eval( string
expression, string
codeBody)
{
msc.AddCode(codeBody);
return
msc.Eval(expression);
}
/// <summary>
/// 运行Eval方法
/// </summary>
/// <param name="language">脚本语言</param>
/// <param name="expression">表达式</param>
/// <param name="codeBody">函数体</param>
/// <returns>返回值object</returns>
public
object Eval(ScriptLanguage language, string
expression, string
codeBody)
{
if
( this .Language != language)
this .Language = language;
return
Eval(expression, codeBody);
}
/// <summary>
/// 运行Run方法
/// </summary>
/// <param name="mainFunctionName">入口函数名称 例如:add</param>
/// <param name="parameters">参数:例如:new object(){"",""}</param>
/// <param name="codeBody">函数体 例如:fucniton add(int a,int b){return a+b;}</param>
/// <returns>返回值object:获取object.Tostring()</returns>
public
object Run( string
mainFunctionName, object [] parameters, string
codeBody)
{
this .msc.AddCode(codeBody);
return
msc.Run(mainFunctionName, parameters);
}
/// <summary>
/// 运行Run方法
/// </summary>
/// <param name="language">脚本语言</param>
/// <param name="mainFunctionName">入口函数名称</param>
/// <param name="parameters">参数</param>
/// <param name="codeBody">函数体</param>
/// <returns>返回值object</returns>
public
object Run(ScriptLanguage language, string
mainFunctionName, object [] parameters, string
codeBody)
{
if
( this .Language != language)
this .Language = language;
return
Run(mainFunctionName, parameters, codeBody);
}
/// <summary>
/// 放弃所有已经添加到 ScriptControl 中的 Script 代码和对象
/// </summary>
public
void Reset()
{
this .msc.Reset();
}
/// <summary>
/// 获取或设置脚本语言
/// </summary>
public
ScriptLanguage Language
{
get
{ return
(ScriptLanguage)Enum.Parse( typeof (ScriptLanguage), this .msc.Language, false ); }
set
{ this .msc.Language = value.ToString(); }
}
/// <summary>
/// 获取或设置脚本执行时间,单位为毫秒
/// </summary>
public
int Timeout
{
get
{ return
0; }
}
/// <summary>
/// 设置是否显示用户界面元素
/// </summary>
public
bool AllowUI
{
get
{ return
this .msc.AllowUI; }
set
{ this .msc.AllowUI = value; }
}
/// <summary>
/// 宿主应用程序是否有保密性要求
/// </summary>
public
bool UseSafeSubset
{
get
{ return
this .msc.UseSafeSubset; }
set
{ this .msc.UseSafeSubset = true ; }
}
/// <summary>
/// RunError事件激发
/// </summary>
private
void OnError()
{
if
(RunError != null )
RunError();
}
/// <summary>
/// OnTimeout事件激发
/// </summary>
private
void OnTimeout()
{
if
(RunTimeout != null )
RunTimeout();
}
}
}
} 开始解析js方法。 假如有个js方法: function add( var
a){ return
a+1;}
通过上面的ScriptEngine类调用 js:add 方法 ********************************************************************* //声明是Javascript方法 script_run.ScriptEngine myScript = new
script_run.ScriptEngine(script_run.ScriptLanguage.JavaScript);
//js字符串 string
javascriptString=”function add( var
a){ return
a+1;} function test(){}”;
object
jsmethodRunValue = myScript.Run( "add" , new
object [] {“3”}, javascriptString);
Console.WriteLine(jsmethodRunValue.ToString()); Console.ReadLine(); ********************************************************************************* 昂首阔步,不留一点遗憾 |