c#基础，单线程，跨线程访问和线程带参数 -凯发k8官方网

1 using system; 2 using system.collections.generic; 3 using system.threading; 4 using system.windows.forms; 5 6 namespace 线程和跨线程 7 { 8 public partial class form1 : form 9 { 10 public form1() 11 { 12 initializecomponent(); 13 } 14 ///

15 /// 单线程直接假死了 16 ///

17 /// 18 /// 19 private void btnalone_click(object sender, eventargs e) 20 { 21 for (int i = 0; i < 100000; i ) 22 { 23 //通过[调试]-[窗口]-[输出]显示打印值 24 console.writeline(i); 25 } 26 } 27 28 29 ///

30 /// 新线程运行，窗体不假死 31 ///

32 /// 33 /// 34 private void btnnew_click(object sender, eventargs e) 35 { 36 thread th = new thread(showcalculator) 37 { 38 isbackground = true 39 }; 40 th.start(); 41 42 } 43 ///

44 /// 循环计算方法，供新线程使用 45 ///

46 private void showcalculator() 47 { 48 for (int i = 0; i < 100000; i ) 49 {//通过[调试]-[窗口]-[输出]显示打印值 50 console.writeline(i); 51 } 52 } 53 ///

54 /// 带参数的 55 ///

56 /// 57 /// 58 private void btnparameters_click(object sender, eventargs e) 59 { 60 list<int> list = new list<int>() { 1, 2, 3, 4, 5 }; 61 parameterizedthreadstart parthreadstart = new parameterizedthreadstart(showparameters); 62 thread th = new thread(parthreadstart) { isbackground = true }; 63 th.start(list); 64 } 65 private void showparameters(object obj) 66 { 67 //线程中的参数只能是object 68 list<int> result = obj as list<int>; 69 foreach (var item in result) 70 { 71 messagebox.show(item.tostring()); 72 } 73 } 74 ///

75 /// 跨线程访问 76 ///

77 /// 78 /// 79 private void button1_click(object sender, eventargs e) 80 { 81 thread th = new thread(showmulti) { isbackground = true }; 82 th.start(); 83 } 84 ///

85 /// 解决跨线程访问报异常,不使用关闭跨线程检查 86 ///

87 private void showmulti() 88 { 89 int first = 0; 90 for (int i = 0; i < 10; i ) 91 { 92 first = i; 93 } 94 //是否要对lbl控件进行跨线程 95 if (this.lblshow.invokerequired) 96 { 97 //对委托中的数据类型验证 98 this.lblshow.invoke(new actionstring>(showlablevalue), this.lblshow, first.tostring()); 99 } 100 else 101 { 102 this.lblshow.text = first.tostring(); 103 } 104 } 105 ///

106 /// 把值写到控件中 107 ///

108 /// 109 /// 110 private void showlablevalue(label lbl, string value) 111 { 112 lbl.text = value; 113 } 114 115 private void form1_load(object sender, eventargs e) 116 { 117 //关闭跨进程检查 118 //label.checkforillegalcrossthreadcalls = false; 119 //改用委托方法实现 120 } 121 } 122 }

 

转载于:https://www.cnblogs.com/sighful/p/8981007.html

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