C# winform ListBox实现滚动条自动滚动至底部

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8 using System.Threading; 9 using System.Threading.Tasks; 10 using System.Windows.Forms; 12 namespace ListBoxAutoScroll 13 { 14 public partial class Form1 : Form 15 { 16 Thread[] threadArr = new Thread[ 20 ]; 17 bool scroll = false ; 18 object obj = new object (); 19 delegate void AddItemCallback( string text); 20 public Form1() 21 { 22 InitializeComponent(); 23 } 25 private void btnStart_Click( object sender, EventArgs e) 26 { 27 listBoxMsg.Items.Clear(); 28 for ( int i = 0 ; i < threadArr.Length; i++ ) 29 { 30 if (threadArr[i] == null || threadArr[i].ThreadState == ThreadState.Aborted || threadArr[i].ThreadState == ThreadState.Stopped) 31 { 32 threadArr[i] = new Thread( new ThreadStart(() => AddData(i))); 33 threadArr[i].Name = i.ToString(); 34 } 35 threadArr[i].Start(); 36 } 37 } 38 public void AddData( int i) 39 { 41 while ( true ) 42 { 43 AddItem( " ListBox中添加【第 " + i.ToString() + " 项】 " ); 44 Thread.Sleep( 1000 ); 45 } 46 } 47 private void AddItem( string text) 48 { 49 if ( this .listBoxMsg.TopIndex == this .listBoxMsg.Items.Count - ( int )( this .listBoxMsg.Height / this .listBoxMsg.ItemHeight)) 50 scroll = true ; 51 if ( this .listBoxMsg.InvokeRequired) 52 { 53 AddItemCallback d = new AddItemCallback(AddItem); 54 this .Invoke(d, new object [] { text }); 55 } 56 else 57 { 58 this .listBoxMsg.Items.Add(text); 59 } 60 if (scroll) 61 this .listBoxMsg.TopIndex = this .listBoxMsg.Items.Count - ( int )( this .listBoxMsg.Height / this .listBoxMsg.ItemHeight); 62 } 64 private void btnStop_Click( object sender, EventArgs e) 65 { 66 for ( int i = 0 ; i < threadArr.Length; i++ ) 67 { 68 if (threadArr[i] != null && threadArr[i].ThreadState != ThreadState.Stopped && threadArr[i].ThreadState != ThreadState.Aborted) 69 { 70 threadArr[i].Abort(); 71 } 72 } 73 } 74 }

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原作者：程序届卡卡罗特

来源：CSDN

原文：https://blog.csdn.net/u010533180/article/details/73468057
版权声明：本文为博主原创文章，转载请附上博文链接！