1 using System; 2 using System.Collections.Generic; 3 using System.Threading; 4 using System.Windows.Forms; 5 6 namespace 線程和跨線程 7 { 8 public partial class Form1 : Form 9 { 10 public Form1() 11 { 12 InitializeComponent(); 13 } 14 /// <summary> 15 /// 單線程直接假死了 16 /// </summary> 17 /// <param name="sender"></param> 18 /// <param name="e"></param> 19 private void btnAlone_Click(object sender, EventArgs e) 20 { 21 for (int i = 0; i < 100000; i++) 22 { 23 //通過[調試]-[窗口]-[輸出]顯示打印值 24 Console.WriteLine(i); 25 } 26 } 27 28 29 /// <summary> 30 /// 新線程運行，窗體不假死 31 /// </summary> 32 /// <param name="sender"></param> 33 /// <param name="e"></param> 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 /// <summary> 44 /// 循環計算方法，供新線程使用 45 /// </summary> 46 private void ShowCalculator() 47 { 48 for (int i = 0; i < 100000; i++) 49 {//通過[調試]-[窗口]-[輸出]顯示打印值 50 Console.WriteLine(i); 51 } 52 } 53 /// <summary> 54 /// 帶參數的 55 /// </summary> 56 /// <param name="sender"></param> 57 /// <param name="e"></param> 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 //線程中的參數只能是Object 68 List<int> result = obj as List<int>; 69 foreach (var item in result) 70 { 71 MessageBox.Show(item.ToString()); 72 } 73 } 74 /// <summary> 75 /// 跨線程訪問 76 /// </summary> 77 /// <param name="sender"></param> 78 /// <param name="e"></param> 79 private void button1_Click(object sender, EventArgs e) 80 { 81 Thread th = new Thread(ShowMulti) { IsBackground = true }; 82 th.Start(); 83 } 84 /// <summary> 85 /// 解決跨線程訪問報異常,不使用關閉跨線程檢查 86 /// </summary> 87 private void ShowMulti() 88 { 89 int first = 0; 90 for (int i = 0; i < 10; i++) 91 { 92 first = i; 93 } 94 //是否要對lbl控件進行跨線程 95 if (this.lblShow.InvokeRequired) 96 { 97 //對委托中的數據類型驗證 98 this.lblShow.Invoke(new Action<Label, string>(ShowLableValue), this.lblShow, first.ToString()); 99 } 100 else 101 { 102 this.lblShow.Text = first.ToString(); 103 } 104 } 105 /// <summary> 106 /// 把值寫到控件中 107 /// </summary> 108 /// <param name="lbl"></param> 109 /// <param name="value"></param> 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 //關閉跨進程檢查 118 //Label.CheckForIllegalCrossThreadCalls = false; 119 //改用委托方法實現 120 } 121 } 122 }

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轉載于:https://www.cnblogs.com/sighful/p/8981007.html

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