csharp: InvokeHelper

Entity Framework

https://entityframework.codeplex.com/

Enterprise Library

https://entlib.codeplex.com/

 

 

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<?xml version="1.0"?> <configuration>         <startup>             <supportedRuntime version="v2.0.50727"/></startup> </configuration>

App.config

　　

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using System; using System.Collections.Generic; using System.Text; using System.Reflection;     namespace InvokerHelperDemo {     /// <summary>     /// http://www.getcodesamples.com/src/E6947A0/4F02A4B8     ///     /// </summary>     public class Helpers     {         static private System.Collections.Generic.SortedDictionary<object, DuInvokeHelper> m_List = new SortedDictionary<object, DuInvokeHelper>();         /// <summary>         ///         /// </summary>         /// <param name="Instance"></param>         /// <param name="helper"></param>         public static void AddHelper(object Instance, DuInvokeHelper helper)         {             m_List.Add(Instance, helper);         }         /// <summary>         ///         /// </summary>         /// <param name="Instance"></param>         /// <returns></returns>         public static DuInvokeHelper find(object Instance)         {             if (m_List.ContainsKey(Instance))                 return m_List[Instance];             else                 return null;         }       }     /// <summary>     ///     /// </summary>     public class DuInvokeHelper     {         static System.Collections.Generic.Dictionary<string, Type> Types = new Dictionary<string, Type>();         protected object m_Instance;         Type m_Type;         /// <summary>         ///         /// </summary>         public object Instance         {             get             {                 return m_Instance;             }         }         /// <summary>         ///         /// </summary>         /// <param name="Instance"></param>         public DuInvokeHelper(object Instance)         {             m_Instance = Instance;             m_Type = Instance.GetType();             //            Helpers.AddHelper(Instance, this);         }         /// <summary>         ///         /// </summary>         /// <param name="Instance"></param>         /// <param name="type"></param>         public DuInvokeHelper(object Instance, Type type)         {             m_Instance = Instance;             m_Type = type;         }         /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <returns></returns>         public bool HasField(string FieldName)         {             foreach (FieldInfo field in m_Type.GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance))             {                 if (field.Name == FieldName)                     return true;             }             return false;         }         /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <returns></returns>         public object GetProperty(string FieldName)         {             return m_Type.InvokeMember(FieldName,                 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty,                 null, this.m_Instance, null);           }         /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <param name="Value"></param>         /// <returns></returns>         public object SetProperty(string FieldName, object Value)         {             return m_Type.InvokeMember(FieldName,                 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetProperty,                 null, this.m_Instance, new object[] { Value });         }         /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <param name="args"></param>         /// <returns></returns>         public object GetField(string FieldName, object[] args)         {             return m_Type.InvokeMember(FieldName,                 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetField,                 null, this.m_Instance, args);         }         /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <param name="args"></param>         /// <returns></returns>         public object SetField(string FieldName, object[] args)         {             return m_Type.InvokeMember(FieldName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetField, null, this.m_Instance, args);         }         /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <param name="Value"></param>         /// <returns></returns>         public object SetField(string FieldName, object Value)         {             return SetField(FieldName, new object[] { Value });         }         /// <summary>         ///         /// </summary>         /// <param name="PropertyName"></param>         /// <returns></returns>         public object StaticGetProperty(string PropertyName)         {             return m_Type.InvokeMember(PropertyName,                 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.GetProperty,                 null, null, null);         }         /// <summary>         ///         /// </summary>         /// <param name="args"></param>         /// <returns></returns>         public object CreateInstance(object[] args)         {             return null;         }           /// <summary>         ///         /// </summary>         /// <param name="FieldName"></param>         /// <returns></returns>         public object GetField(string FieldName)         {             return GetField(FieldName, null);         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="args"></param>         /// <param name="modifiers"></param>         /// <returns></returns>         public object InvokeByRef(string MethodName, ref object[] args, ParameterModifier modifiers)         {             ParameterModifier[] mod = { modifiers };               return m_Type.InvokeMember(MethodName,                 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.InvokeMethod,                 null, m_Instance, args, mod, null, null);         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="args"></param>         /// <param name="modifiers"></param>         /// <returns></returns>         public object InvokeByOut(string MethodName, object[] args, ParameterModifier modifiers)         {             ParameterModifier[] mod = { modifiers };               return m_Type.InvokeMember(MethodName,                 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.InvokeMethod,                 null, m_Instance, args, mod, null, null);         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="args"></param>         /// <returns></returns>         public object Invoke(string MethodName, object[] args)         {             return m_Type.InvokeMember(MethodName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.InvokeMethod, null, m_Instance, args);         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="args"></param>         /// <returns></returns>         public object InvokeStatic(string MethodName, object[] args)         {             return m_Type.InvokeMember(MethodName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.InvokeMethod, null, null, args);         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="arg1"></param>         /// <param name="arg2"></param>         /// <returns></returns>         public object InvokeStatic(string MethodName, object arg1, object arg2)         {             return InvokeStatic(MethodName, new object[] { arg1, arg2 });         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="arg1"></param>         /// <returns></returns>         public object InvokeStatic(string MethodName, object arg1)         {             return InvokeStatic(MethodName, new object[] { arg1 });         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <returns></returns>         public object InvokeStatic(string MethodName)         {             return InvokeStatic(MethodName, null);         }           /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <returns></returns>         public object Invoke(string MethodName)         {             return Invoke(MethodName, null);         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="arg1"></param>         /// <returns></returns>         public object Invoke(string MethodName, object arg1)         {             return Invoke(MethodName, new object[] { arg1 });         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="arg1"></param>         /// <returns></returns>         public object Invoke(string MethodName, int arg1)         {             return Invoke(MethodName, new object[] { arg1 });         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="obj1"></param>         /// <param name="obj2"></param>         /// <returns></returns>         public object Invoke(string MethodName, object obj1, object obj2)         {             return Invoke(MethodName, new object[] { obj1, obj2 });         }         /// <summary>         ///         /// </summary>         /// <param name="MethodName"></param>         /// <param name="obj1"></param>         /// <param name="obj2"></param>         /// <param name="obj3"></param>         /// <returns></returns>         public object Invoke(string MethodName, object obj1, object obj2, object obj3)         {             return Invoke(MethodName, new object[] { obj1, obj2, obj3 });         }         /// <summary>         ///         /// </summary>         /// <param name="TypeName"></param>         /// <returns></returns>         public static Type FindType(string TypeName)         {             if (Types.ContainsKey(TypeName))                 return Types[TypeName];             Type ret = null;             foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())             {                 foreach (Module module in assembly.GetModules())                 {                     foreach (Type type in module.GetTypes())                     {                         if (type.FullName == TypeName)                         {                             ret = type;                             Types.Add(TypeName, ret);                             return ret;                         }                     }                 }               }             Types.Add(TypeName, ret);               return ret;             }           }     }

　　

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/*******************************************************************************  * InvokeHelper.cs  * A thread-safe control invoker helper class.  * -----------------------------------------------------------------------------  * Project:Conmajia.Controls  * Author:Conmajia  * Url:conmajia@gmail.com  * History:  *      4th Aug., 2012  *      Added support for "Non-control" controls (such as ToolStripItem).  *       *      4th Aug., 2012  *      Initiated.  ******************************************************************************/ using System; using System.Collections.Generic; using System.Reflection; using System.Text; using System.Windows.Forms;   namespace InvokerHelperDemo {     /// <summary>     /// A thread-safe control invoker helper class.     /// 善用IAsyncResult     /// 利用BeginInvoke与EndInvoke完成异步委托方法     /// 线程Thread有一个属性IsBackground，通过把此属性设置为true，就可以把线程设置为后台线程     /// </summary>     public class InvokeHelper     {         #region delegates         private delegate object MethodInvoker(Control control, string methodName, params object[] args);           private delegate object PropertyGetInvoker(Control control, object noncontrol, string propertyName);         private delegate void PropertySetInvoker(Control control, object noncontrol, string propertyName, object value);         #endregion           #region static methods         /// <summary>         ///  helpers         /// </summary>         /// <param name="control"></param>         /// <param name="noncontrol"></param>         /// <param name="propertyName"></param>         /// <returns></returns>         private static PropertyInfo GetPropertyInfo(Control control, object noncontrol, string propertyName)         {             if (control != null && !string.IsNullOrEmpty(propertyName))             {                 PropertyInfo pi = null;                 Type t = null;                   if (noncontrol != null)                     t = noncontrol.GetType();                 else                     t = control.GetType();                   pi = t.GetProperty(propertyName);                   if (pi == null)                     throw new InvalidOperationException(                         string.Format(                         "Can't find property {0} in {1}.",                         propertyName,                         t.ToString()                         ));                   return pi;             }             else                 throw new ArgumentNullException("Invalid argument.");         }           /// <summary>         ///  outlines         /// </summary>         /// <param name="control"></param>         /// <param name="methodName"></param>         /// <param name="args"></param>         /// <returns></returns>         public static object Invoke(Control control, string methodName, params object[] args)         {             if (control != null && !string.IsNullOrEmpty(methodName))                 if (control.InvokeRequired)                     return control.Invoke(                         new MethodInvoker(Invoke),                         control,                         methodName,                         args                         );                 else                 {                     MethodInfo mi = null;                       if (args != null && args.Length > 0)                     {                         Type[] types = new Type[args.Length];                         for (int i = 0; i < args.Length; i++)                         {                             if (args[i] != null)                                 types[i] = args[i].GetType();                         }                           mi = control.GetType().GetMethod(methodName, types);                     }                     else                         mi = control.GetType().GetMethod(methodName);                       // check method info you get                     if (mi != null)                         return mi.Invoke(control, args);                     else                         throw new InvalidOperationException("Invalid method.");                 }             else                 throw new ArgumentNullException("Invalid argument.");         }         /// <summary>         ///         /// </summary>         /// <param name="control"></param>         /// <param name="propertyName"></param>         /// <returns></returns>         public static object Get(Control control, string propertyName)         {             return Get(control, null, propertyName);         }         /// <summary>         ///         /// </summary>         /// <param name="control"></param>         /// <param name="noncontrol"></param>         /// <param name="propertyName"></param>         /// <returns></returns>         public static object Get(Control control, object noncontrol, string propertyName)         {             if (control != null && !string.IsNullOrEmpty(propertyName))                 if (control.InvokeRequired)                     return control.Invoke(new PropertyGetInvoker(Get),                         control,                         noncontrol,                         propertyName                         );                 else                 {                     PropertyInfo pi = GetPropertyInfo(control, noncontrol, propertyName);                     object invokee = (noncontrol == null) ? control : noncontrol;                       if (pi != null)                         if (pi.CanRead)                             return pi.GetValue(invokee, null);                         else                             throw new FieldAccessException(                                 string.Format(                                 "{0}.{1} is a write-only property.",                                 invokee.GetType().ToString(),                                 propertyName                                 ));                       return null;                 }             else                 throw new ArgumentNullException("Invalid argument.");         }         /// <summary>         ///         /// </summary>         /// <param name="control"></param>         /// <param name="propertyName"></param>         /// <param name="value"></param>         public static void Set(Control control, string propertyName, object value)         {             Set(control, null, propertyName, value);         }         /// <summary>         ///         /// </summary>         /// <param name="control"></param>         /// <param name="noncontrol"></param>         /// <param name="propertyName"></param>         /// <param name="value"></param>         public static void Set(Control control, object noncontrol, string propertyName, object value)         {             if (control != null && !string.IsNullOrEmpty(propertyName))                 if (control.InvokeRequired)                     control.Invoke(new PropertySetInvoker(Set),                         control,                         noncontrol,                         propertyName,                           value                         );                 else                 {                     PropertyInfo pi = GetPropertyInfo(control, noncontrol, propertyName);                     object invokee = (noncontrol == null) ? control : noncontrol;                       if (pi != null)                         if (pi.CanWrite)                             pi.SetValue(invokee, value, null);                         else                             throw new FieldAccessException(                                 string.Format(                                 "{0}.{1} is a read-only property.",                                 invokee.GetType().ToString(),                                 propertyName                                 ));                 }             else                 throw new ArgumentNullException("Invalid argument.");         }         #endregion     } }

　用例：

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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Threading; using System.Windows.Forms;   namespace InvokerHelperDemo {     /// <summary>     ///     /// </summary>     public partial class Form1 : Form     {           /// <summary>         ///         /// </summary>         /// <returns></returns>         DataTable setData()         {             DataTable dt = new DataTable();             dt.Columns.Add("id", typeof(int));             dt.Columns.Add("name", typeof(string));             dt.Columns.Add("date", typeof(DateTime));             dt.Rows.Add(1,"ds","2015-01-02");             dt.Rows.Add(2, "sb", "2015-01-02");             dt.Rows.Add(3, "sg", "2015-01-02");             return dt;           }             /// <summary>         ///         /// </summary>         public Form1()         {             InitializeComponent();         }           Thread t;         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void button1_Click(object sender, EventArgs e)         {             if (t == null)             {                 t = new Thread(multithread);                 t.Start();                 label4.Text = string.Format(                     "Thread state:\n{0}",                     t.ThreadState.ToString()                     );             }         }         /// <summary>         ///         /// </summary>         /// <param name="msg"></param>         public void DoWork(string msg)         {             this.label3.Text = string.Format("Invoke method: {0}", msg);         }         //         int count = 0;         /// <summary>         ///         /// </summary>         void multithread()         {             //while (true)             //{                                   InvokeHelper.Set(this.label1, "Text", string.Format("Set value: {0}", count));                 InvokeHelper.Set(this.label1, "Tag", count);                 InvokeHelper.Set(this.dataGridView1, "DataSource", setData());                 string value = InvokeHelper.Get(this.label1, "Tag").ToString();                 InvokeHelper.Set(this.label2, "Text",                    string.Format("Get value: {0}", value));                   InvokeHelper.Invoke(this, "DoWork", value);                   Thread.Sleep(500);                 count++;             //}           }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void Form1_FormClosed(object sender, FormClosedEventArgs e)         {             if (t != null && t.IsAlive)                 t.Abort();         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void Form1_Load(object sender, EventArgs e)         {           }     } }

　　http://www.codeproject.com/Articles/29680/Towards-Cleaner-Code-A-C-Asynchronous-Helper

http://www.codeproject.com/Articles/29829/Towards-Cleaner-Code-II-a-C-GUI-Invoke-Async-Helpe

http://www.codeproject.com/Articles/10346/Remoting-with-GUIs