原文：http://www.cnblogs.com/chenwei19/archive/2009/02/04/1384034.htmlhtml
Class1和Form 窗體在同一個命名空間函數
1 using System; 2 using System.Collections.Generic; 3 using System.Text; 4 namespace fanshetest1 5 { 6 class Class1 7 { 8 private string ab="1"; 9 public Class1(string aa) 10 { 11 a = aa; 12 } 13 public int aa(int x,int y) 14 { 15 return x+y+x+y; 16 } 17 public string bb() 18 { 19 return "bb"; 20 } 21 public static string cc() 22 { 23 return "cc"; 24 } 25 public string AB 26 { 27 get 28 { 29 return ab; 30 } 31 set 32 { 33 ab = value; 34 } 35 } 36 public string a; 37 } 38 }
Class1和Form 窗體在不一樣一個命名空間this
1 using System; 2 using System.Collections.Generic; 3 using System.Text; 4 namespace fanshetest1 5 { 6 class Class1 7 { 8 private string ab="1"; 9 public Class1(string aa) 10 { 11 a = aa; 12 } 13 public int aa(int x,int y) 14 { 15 return x+y+x+y; 16 } 17 public string bb() 18 { 19 return "bb"; 20 } 21 public static string cc() 22 { 23 return "cc"; 24 } 25 public string AB 26 { 27 get 28 { 29 return ab; 30 } 31 set 32 { 33 ab = value; 34 } 35 } 36 public string a; 37 } 38 }
下面是如何使用反射操做以上類；spa
1 using System; 2 using System.Collections.Generic; 3 using System.ComponentModel; 4 using System.Data; 5 using System.Drawing; 6 using System.Text; 7 using System.Windows.Forms; 8 using System.Reflection; 9 namespace fanshetest 10 { 11 public partial class Form1 : Form 12 { 13 System.Reflection.Assembly a; 14 System.Reflection.Assembly b; 15 public Form1() 16 { 17 InitializeComponent(); 18 a = System.Reflection.Assembly.LoadFrom("Class1.DLL"); 19 } 20 private void button1_Click(object sender, EventArgs e) 21 { 22 gouzaohanshu(); 23 24 } 25 //沒有傳參數，返回一個類型； 26 private void One() 27 { 28 //再另建一個項目，在項目中引用上面生成的ClassLibrary1.DLL 29 System.Type t = a.GetType("Class1.Class1"); 30 //動態生成ClassLibrary1.Class類的實例 31 Object theObj = System.Activator.CreateInstance(t); 32 //參數信息，GetSum須要兩個string參數 33 System.Type[] paramTypes = new System.Type[2]; 34 paramTypes[0] = System.Type.GetType("System.String"); 35 paramTypes[1] = System.Type.GetType("System.String"); 36 //System.Reflection.MethodInfo mi = t.GetMethod("aa", paramTypes); 37 System.Reflection.MethodInfo mi = t.GetMethod("bb"); 38 //參數值 39 Object[] parameters = new Object[2]; 40 parameters[0] = 3; 41 parameters[1] = 4; 42 Object returnValue = mi.Invoke(theObj, null); 43 this.textBox1.Text = returnValue.ToString(); 44 } 45 //沒有返回值，調用的是直接執行函數 46 private void None_void() 47 { 48 //再另建一個項目，在項目中引用上面生成的ClassLibrary1.DLL 49 System.Type t = a.GetType("Class1.Class2"); 50 //動態生成ClassLibrary1.Class類的實例 51 Object theObj = System.Activator.CreateInstance(t); 52 //參數信息，GetSum須要兩個string參數 53 System.Type[] paramTypes = new System.Type[2]; 54 //此處調用方法，若是有參數只須要在括號的後面加上"，" 加上參數的type[]類型的參數 55 System.Reflection.MethodInfo mi = t.GetMethod("Mes"); 56 Object returnValue = mi.Invoke(theObj, null); 57 } 58 //沒有返回值，傳出參數接收返回值； 59 private void Two() 60 { 61 Type t = a.GetType("Class1.Class1"); 62 Object theObj = Activator.CreateInstance(t); 63 Type[] types=new Type[2]; 64 types[0]=Type.GetType("System.Int32"); 65 types[1]=Type.GetType("System.Int32"); 66 Object[] obj=new Object[2]; 67 obj[0]=2; 68 obj[1]=3; 69 MethodInfo mi = t.GetMethod("aa",types); 70 Object returnValue=mi.Invoke(theObj,obj); 71 this.textBox1.Text = returnValue.ToString(); 72 } 73 //獲取同一個命名空間的反射出值 74 private void Local() 75 { 76 Type t=Type.GetType("fanshetest1.Class1"); 77 //建立一個 實例 78 Object theObj = Activator.CreateInstance(t); 79 Type[] types=new Type[2]; 80 types[0]=Type.GetType("System.Int32"); 81 types[1] = Type.GetType("System.Int32"); 82 Object[] obj = new Object[2]; 83 obj[0] = 2; 84 obj[1] = 3; 85 MethodInfo mi = t.GetMethod("aa",types); 86 Object returnValue = mi.Invoke(theObj,obj); 87 this.textBox1.Text = returnValue.ToString(); 88 } 89 //獲取出一個屬性 90 private void attribute() 91 { 92 a = Assembly.LoadFrom("Class1.dll"); 93 Type t = a.GetType("Class1.Class1"); 94 t = Type.GetType("fanshetest1.Class1"); 95 Object theObj = Activator.CreateInstance(t); 96 t.GetProperty("AB").SetValue(theObj,"a",null); 97 this.textBox1.Text = t.GetProperty("AB").GetValue(theObj, null).ToString(); 98 } 99 //獲取出靜態的函數； 100 private void static_() 101 { 102 a = System.Reflection.Assembly.LoadFrom("Class1.dll"); 103 Type t = a.GetType("Class1.Class1"); 104 t = Type.GetType("fanshetest1.Class1"); 105 //建立一個實例 106 Object theObj = Activator.CreateInstance(t); 107 //建立一個方法的實例 108 MethodInfo mi = t.GetMethod("cc"); 109 Object returnValue = mi.Invoke(theObj, null); 110 this.textBox1.Text = returnValue.ToString(); 111 } 112 //獲取出變量； 113 private void variable() 114 { 115 a = Assembly.LoadFrom("Class1.dll"); 116 Type t = a.GetType("Class1.Class1"); 117 t = Type.GetType("fanshetest1.Class1"); 118 Object theObj = Activator.CreateInstance(t); 119 MethodInfo mi = t.GetMethod("a"); 120 t.GetField("a").SetValue(theObj,"a"); 121 this.textBox1.Text = t.GetField("a").GetValue(theObj).ToString(); 122 } 123 //獲取出私有變量反射值； 124 private void private_() 125 { 126 127 } 128 //構造函數 129 private void gouzaohanshu() 130 { 131 Type t = a.GetType("Class1.Class1"); 132 t = Type.GetType("fanshetest1.Class1"); 133 //建立構造函數類型 134 Type[] structure_Type = new Type[1]; 135 structure_Type[0] = Type.GetType("System.String"); 136 //定義構造函數傳參類型 137 Object[] structure_Obj = new Object[1]; 138 structure_Obj[0] = "aa"; 139 //建立一個 實例 140 Object theObj = Activator.CreateInstance(t,structure_Obj); 141 //MethodInfo structure_Mi = t.GetConstructor(structure_Type); 142 //MethodInfo structure_Mi = t.GetMethod("Class1", structure_Type); 143 //structure_Mi.Invoke(theObj, structure_Obj); 144 MethodInfo mi = t.GetMethod("a"); 145 //t.GetField("a").SetValue(theObj, "a"); 146 this.textBox1.Text = t.GetField("a").GetValue(theObj).ToString(); 147 } 148 } 149 }