58 lines
1.5 KiB
C#
58 lines
1.5 KiB
C#
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using System;
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using System.Reflection;
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namespace CsharpHttpHelper.Helper
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{
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/// <summary>
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/// 用户执行JS的方法 Copyright：http://www.httphelper.com/
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/// </summary>
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internal class ExecJsHelper
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{
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private static Type type = Type.GetTypeFromProgID("ScriptControl");
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/// <summary>
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/// 直接调用JS方法并获取返回的值
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/// </summary>
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/// <param name="strJs">要执行的JS代码</param>
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/// <param name="main">要调用的方法名</param>
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/// <returns>执行结果</returns>
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internal static string JavaScriptEval(string strJs, string main)
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{
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object scriptControl = GetScriptControl();
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SetScriptControlType(strJs, scriptControl);
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return type.InvokeMember("Eval", BindingFlags.InvokeMethod, null, scriptControl, new object[1]
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{
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main
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}).ToString();
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}
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/// <summary>
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/// 获取ScriptControl接口类
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/// </summary>
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/// <param name="strJs">JS</param>
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/// <param name="obj">对象</param>
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/// <returns>Type</returns>
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private static Type SetScriptControlType(string strJs, object obj)
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{
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type.InvokeMember("Language", BindingFlags.SetProperty, null, obj, new object[1]
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{
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"JScript"
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});
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type.InvokeMember("AddCode", BindingFlags.InvokeMethod, null, obj, new object[1]
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{
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strJs
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});
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return type;
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}
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/// <summary>
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/// 获取ScriptControl接口对象
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/// </summary>
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/// <returns>ScriptControl对象</returns>
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private static object GetScriptControl()
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{
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return Activator.CreateInstance(type);
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}
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}
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}
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