关于 可执行程序的 反射问题 在线急等。请指教

[Mr_Ning]

大家好。我想在另外一个可执行程序中。反射到同一目录下的另外一个可执行程序。然后调用里面的一个函数。可怎么也取不到Type ：代码如下：
try
{
Assembly a = Assembly.LoadFrom(Application.StartupPath + "\\MultipleUpDown.exe");
Type type = a.GetType("MainForm");
Form _Form = (Form)Activator.CreateInstance(type);
//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
{
}

请高手指点。谢谢。

[Mr_Ning]

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。

[mengsijun1987]

顶,顺便学习！

[Mr_Ning]

????请指教。

[Mr_Ning]

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”

[zgke]

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

[xianguang321]

            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

[zgke]

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);

[我在深圳搬砖-Justin]

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........');
        }
    }
}

[Mr_Ning]

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？

[relive_qiankai]

不会 帮顶,顺便学习!

[Mr_Ning]

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。

[Mr_Ning]

求助啊

[zgke]

你看下MainForm的构造把

[Mr_Ning]

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

[zgke]

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

[tweeger]

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;

[wangping_li]

 [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

[wangping_li]

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

[Mr_Ning]

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。

[Mr_Ning]

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。"}