-
- using System;
- using System.Reflection;
- using System.Data;
- using System.Drawing;
- using System.Resources;
- using System.ComponentModel;
- using System.Text;
- using System.IO;
- namespace Svnhost.Common
- {
- /// <summary>
- /// 反射辅助类
- /// </summary>
- /// <remarks>
- /// Author: Ridge Wong
- /// Version: 1.0.0.0 2008-8-7
- /// </remarks>
- public static class ReflectHelper
- {
- #region 成员读写
- /// <summary>
- /// 通过数据行填充实体类型
- /// </summary>
- /// <param name="model">实体对象</param>
- /// <param name="dRow">数据行</param>
- public static void FillInstanceValue(object model, DataRow dRow)
- {
- Type type = model.GetType();
- for (int i = 0; i < dRow.Table.Columns.Count; i++)
- {
- PropertyInfo property = type.GetProperty(dRow.Table.Columns[i].ColumnName);
- if (property != null)
- {
- property.SetValue(model, dRow[i], null);
- }
- }
- }
- /// <summary>
- /// 通过数据只读器填充实体类型
- /// </summary>
- /// <param name="model">实体对象</param>
- /// <param name="dr">数据只读器</param>
- public static void FillInstanceValue(object model, IDataReader dr)
- {
- Type type = model.GetType();
- for (int i = 0; i < dr.FieldCount; i++)
- {
- PropertyInfo property = type.GetProperty(dr.GetName(i));
- if (property != null)
- {
- property.SetValue(model, dr[i], null);
- }
- }
- }
- /// <summary>
- /// 获取实体相关属性的值
- /// </summary>
- /// <param name="obj"></param>
- /// <param name="propertyName"></param>
- /// <returns></returns>
- public static object GetInstanceValue(object obj, string propertyName)
- {
- object objRet = null;
- if (!string.IsNullOrEmpty(propertyName))
- {
- PropertyDescriptor descriptor = TypeDescriptor.GetProperties(obj).Find(propertyName, true);
- if (descriptor != null)
- {
- objRet = descriptor.GetValue(obj);
- }
- }
- return objRet;
- }
- #endregion
- #region 方法调用
- /// <summary>
- /// 直接调用内部对象的方法/函数或获取属性(支持重载调用)
- /// </summary>
- /// <param name="refType">目标数据类型</param>
- /// <param name="funName">函数名称,区分大小写。</param>
- /// <param name="objInitial">如果调用属性,则为相关对象的初始化数据,否则为Null。</param>
- /// <param name="funParams">函数参数信息</param>
- /// <returns>运行结果</returns>
- public static object InvokeMethodOrGetProperty(Type refType, string funName, object[] objInitial, params object[] funParams)
- {
- MemberInfo[] mis = refType.GetMember(funName);
- if (mis.Length < 1)
- {
- throw new InvalidProgramException(string.Concat("函数/方法 [", funName, "] 在指定类型(", refType.ToString(), ")中不存在!"));
- }
- else
- {
- MethodInfo targetMethod = null;
- StringBuilder pb = new StringBuilder();
- foreach (MemberInfo mi in mis)
- {
- if (mi.MemberType != MemberTypes.Method)
- {
- if (mi.MemberType == MemberTypes.Property)
- {
- #region 调用属性方法Get
- targetMethod = ((PropertyInfo)mi).GetGetMethod();
- break;
- #endregion
- }
- else
- {
- throw new InvalidProgramException(string.Concat("[", funName, "] 不是有效的函数/属性方法!"));
- }
- }
- else
- {
- #region 检查函数参数和数据类型 绑定正确的函数到目标调用
- bool validParamsLen = false, validParamsType = false;
- MethodInfo curMethod = (MethodInfo)mi;
- ParameterInfo[] pis = curMethod.GetParameters();
- if (pis.Length == funParams.Length)
- {
- validParamsLen = true;
- pb = new StringBuilder();
- bool paramFlag = true;
- int paramIdx = 0;
- #region 检查数据类型 设置validParamsType是否有效
- foreach (ParameterInfo pi in pis)
- {
- pb.AppendFormat("Parameter {0}: Type={1}, Name={2}\n", paramIdx, pi.ParameterType, pi.Name);
- //不对Null和接受Object类型的参数检查
- if (funParams[paramIdx] != null && pi.ParameterType != typeof(object) &&
- (pi.ParameterType != funParams[paramIdx].GetType()))
- {
- #region 检查类型是否兼容
- try
- {
- funParams[paramIdx] = Convert.ChangeType(funParams[paramIdx], pi.ParameterType);
- }
- catch (Exception)
- {
- paramFlag = false;
- }
- #endregion
- //break;
- }
- ++paramIdx;
- }
- #endregion
- if (paramFlag == true)
- {
- validParamsType = true;
- }
- else
- {
- continue;
- }
- if (validParamsLen && validParamsType)
- {
- targetMethod = curMethod;
- break;
- }
- }
- #endregion
- }
- }
- if (targetMethod != null)
- {
- object objReturn = null;
- #region 兼顾效率和兼容重载函数调用
- try
- {
- object objInstance = System.Activator.CreateInstance(refType, objInitial);
- objReturn = targetMethod.Invoke(objInstance, BindingFlags.InvokeMethod, Type.DefaultBinder, funParams,
- System.Globalization.CultureInfo.InvariantCulture);
- }
- catch (Exception)
- {
- objReturn = refType.InvokeMember(funName, BindingFlags.InvokeMethod, Type.DefaultBinder, null, funParams);
- }
- #endregion
- return objReturn;
- }
- else
- {
- throw new InvalidProgramException(string.Concat("函数/方法 [", refType.ToString(), ".", funName,
- "(args ...) ] 参数长度和数据类型不正确!\n 引用参数信息参考:\n",
- pb.ToString()));
- }
- }
- }
- /// <summary>
- /// 调用相关实体类型的函数方法
- /// </summary>
- /// <param name="refType">实体类型</param>
- /// <param name="funName">函数名称</param>
- /// <param name="funParams">函数参数列表</param>
- /// <returns>调用该函数之后的结果</returns>
- public static object InvokeFunction(Type refType, string funName, params object[] funParams)
- {
- return InvokeMethodOrGetProperty(refType, funName, null, funParams);
- }
- #endregion
- #region 资源获取
- /// <summary>
- /// 获取程序集资源的位图资源
- /// </summary>
- /// <param name="assemblyType">程序集中的某一对象类型</param>
- /// <param name="resourceHolder">资源的根名称。例如,名为“MyResource.en-US.resources”的资源文件的根名称为“MyResource”。</param>
- /// <param name="imageName">资源项名称</param>
- public static Bitmap LoadBitmap(Type assemblyType, string resourceHolder, string imageName)
- {
- Assembly thisAssembly = Assembly.GetAssembly(assemblyType);
- ResourceManager rm = new ResourceManager(resourceHolder, thisAssembly);
- return (Bitmap)rm.GetObject(imageName);
- }
- /// <summary>
- /// 获取程序集资源的文本资源
- /// </summary>
- /// <param name="assemblyType">程序集中的某一对象类型</param>
- /// <param name="resName">资源项名称</param>
- /// <param name="resourceHolder">资源的根名称。例如,名为“MyResource.en-US.resources”的资源文件的根名称为“MyResource”。</param>
- public static string GetStringRes(Type assemblyType, string resName, string resourceHolder)
- {
- Assembly thisAssembly = Assembly.GetAssembly(assemblyType);
- ResourceManager rm = new ResourceManager(resourceHolder, thisAssembly);
- return rm.GetString(resName);
- }
- /// <summary>
- /// 获取程序集嵌入资源的文本形式
- /// </summary>
- /// <param name="assemblyType">程序集中的某一对象类型</param>
- /// <param name="charset">字符集编码</param>
- /// <param name="ResName">嵌入资源相对路径</param>
- /// <returns>如没找到该资源则返回空字符</returns>
- public static string GetManifestString(Type assemblyType, string charset, string ResName)
- {
- Assembly asm = Assembly.GetAssembly(assemblyType);
- Stream st = asm.GetManifestResourceStream(string.Concat(assemblyType.Namespace,
- ".", ResName.Replace("/", ".")));
- if (st == null) { return ""; }
- int iLen = (int)st.Length;
- byte[] bytes = new byte[iLen];
- st.Read(bytes, 0, iLen);
- return (bytes != null) ? Encoding.GetEncoding(charset).GetString(bytes) : "";
- }
- #endregion
- }
- }
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PS:大家觉得好顶顶。鄙视看帖不回的。 |
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