关于 可执行程序的 反射问题 在线急等。请指教

Question

try 
            { 
                Assembly a = Assembly.LoadFrom(Application.StartupPath + "\\MultipleUpDown.exe");            
                Type type = a.GetType("MultipleUpDown.MainForm"); 
                object Myobject= Activator.CreateInstance(type);              
                //执行带参数的方法 
                MethodInfo miParas = type.GetMethod("NewTaskWithoutDialog"); 
                miParas.Invoke(Myobject, new object[] { TableInfo, UpDownType.DOWNLOAD, false, false, "", "升级后自动下载" }); 
            } 
            catch 
            { 
            } 
改成这个可以取到Type了。但是Activator.CreateInstance(type);              这里老报“调用目标发生异常”

Answer 1

Type type = a.GetType("MainForm"); 
为空了把  GetType(需要全路径..)

Answer 2

            try
            {
                Assembly a = Assembly.LoadFile(Application.StartupPath + "\\MultipleUpDown.exe");           
                Type[] types = a.GetTypes();
Form _Form = null;
                foreach(Type type in types)
{
                    try
    {
       Form _Form = a.CreateInstance(type.ToString()) as Form;
       if(_Form.Name == "MainForm")
       {
          break;
       }
    }
    catch
    {
    }
                }
                //执行带参数的方法
                MethodInfo miParas = type.GetMethod("NewTaskWithoutDialog");
                miParas.Invoke(_Form, new object[] { TableInfo, UpDownType.DOWNLOAD, false, false, "", "升级后自动下载" });
            }
            catch
            {
            }试试看

Answer 3

如果是窗体不能用 Activator.CreateInstance(type);        这样看看
 object Myobject = type.InvokeMember(null, BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.CreateInstance, null, null, null);

Answer 4

using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;namespace myReflection
{
    class Program
    {
        static void Main(string[] args)
        {
            Master ma = new Master();
            Type tp = ma.GetType();
            MethodInfo [] MI = tp.GetMethods();
            foreach (MethodInfo mm in MI)
            {
                Console.WriteLine(mm.Name);
            }
        }
    }
    class Student
    {
        private string stuName;        public string StuName
        {
            get { return stuName; }
            set { stuName = value; }
        }
        private int stuAge;        public int StuAge
        {
            get { return stuAge; }
            set { stuAge = value; }
        }
        public void study()
        {
            Console.WriteLine('学习！');
        }
    }    class Master:Student
    {
        public void Say()
        {
            Console.WriteLine('硕士........');
        }
    }
}

Answer 5

    try
            {
                Assembly a = Assembly.LoadFile(Application.StartupPath + "\\MultipleUpDown.exe");           
                Type[] types = a.GetTypes();
        Form _Form = null;
                foreach(Type type in types)
        {
                    try
            {
               Form _Form = a.CreateInstance(type.ToString()) as Form;
               if(_Form.Name == "MainForm")
               {
                  break;
               }
            }
            catch
            {
            }
                }
                //执行带参数的方法
                MethodInfo miParas = type.GetMethod("NewTaskWithoutDialog");
                miParas.Invoke(_Form, new object[] { TableInfo, UpDownType.DOWNLOAD, false, false, "", "升级后自动下载" });
            }
            catch
            {
            }
这个a.CreateInstance(_type.ToString())老报：调用目标发生错误。请问。怎么办啊？

Answer 6

如果是窗体不能用 Activator.CreateInstance(type);        这样看看 
object Myobject = type.InvokeMember(null, BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.CreateInstance, null, null, null); 这个也是说：调用的目标发生错误。请指教啊。

Answer 7

      public MainForm()
        {
            InitializeComponent();            Yqun.Common.ContextCache.ClientLoginInfos.ClientLoginInfo.LocalStartPath =
                Application.StartupPath;
            string appKey =
                Yqun.ClientConfig.GetFirstAppKey();
            Yqun.ClientConfig.SetLocalDefaultContext(appKey);            loadActions();            if (!DebugMode)
            {
                this.toolStripButton_New.Visible = false;
            }            InitSheetStyle();
            SetSheetStyle();            this.sheet.SelectionUnit = FarPoint.Win.Spread.Model.SelectionUnit.Row;            this.fp.GotFocus += new EventHandler(fp_GotFocus);
            this.treeView_Works.GotFocus += new EventHandler(treeView_Works_GotFocus);            this.TopMost = true;
            this.TopMost = false;        }        public MainForm(string arg):this()
        {
            this.Show();            byte[] bs = System.Convert.FromBase64String(arg);
            string xml = System.Text.Encoding.UTF8.GetString(bs);
            DataSet d =
                UpDownUtility.GetTablePropertyStruct();
            Yqun.Common.Encoder.DataSetCoder.DeSerialize(d, xml);            NewTask(d);
        }
就这两构造

Answer 8

你再建立个类 例如 class MainShow
 
public object GetMainForm ()
{
  return new MainForm();
}然后反射这个类看看

Answer 9

尝试一下：
Assembly a = Assembly.LoadFrom(Application.StartupPath + "\\MultipleUpDown.exe");
Type type = a.GetType("MultipleUpDown.MainForm");
ConstructorInfo ci = type.GetConstructor(new Type[] {});
Form _Form = ci.Invoke(new object[] parameters{}) as Form;

Answer 10

 [NonSerialized]
        Type moduleType;        [XmlIgnore]
        [Browsable(false)]
        public Type ModuleType
        {
            get
            {                if (moduleType == null)
                {
                    try
                    {
                        moduleType = Assembly.GetType(窗体名, false,true);
                        if (moduleType == null)
                        {
                            Assembly[] ass = AppDomain.CurrentDomain.GetAssemblies();
                            foreach (Assembly var in ass)
                            {
                                moduleType = var.GetType(窗体名, false);
                                if (moduleType != null)
                                    break;
                            }
                        }
                    }
                    catch
                    {
                    }
                }
                return moduleType;
            }
            set { moduleType = value; }
        }        [NonSerialized]
        Assembly assembly;        [XmlIgnore]
        [Browsable(false)]
        public Assembly Assembly
        {
            get
            {                if (assembly == null)
                {
                    try
                    {
                        assembly = AppDomain.CurrentDomain.Load(程序集);
                    }
                    catch
                    {                    }
                }
                return assembly;
            }
            set { assembly = value; }
        }我就这样取，然后再Activator.CreateInstance(type)的

Answer 11

像上面那样肯定能取到type的，取到type后自然能用Activator.CreateInstance(type)创建实例

Answer 12

谢谢各位啊：是我没放配置文件进去。所以构造函数哪里出了问题。谢谢啊。现在是我想先把反射出来的这个窗体给Show出来以后。再执行我自己的函数。请问该怎么能Show出我的窗体了。

Answer 13

type.GetMethod("ShowDialog")
“type.GetMethod("ShowDialog")”引发了“System.Reflection.AmbiguousMatchException”类型的异常
    base {System.SystemException}: {"发现不明确的匹配。"}

Answer 14

我是这么做的： try
            {
                Assembly a = Assembly.LoadFrom(Application.StartupPath + "\\MultipleUpDown.exe");
                Type type = a.GetType("MultipleUpDown.MainForm");
                Form MyForm = a.CreateInstance(type.FullName) as Form;
                MethodInfo miParas = type.GetMethod("NewTaskWithoutDialog");
                miParas.Invoke(MyForm, new object[] { TableInfo, UpDownType.DOWNLOAD, false, false, "升级后自动下载" });
            }
            catch
            {
            }大家还有没有好的办法了。