csharp: InvokeHelper

Entity Framework

https://entityframework.codeplex.com/

Enterprise Library

https://entlib.codeplex.com/

 

 

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

App.config

　　

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;


        }



    }
  
}

　　

/*******************************************************************************
 * 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：

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