Public Class Form1 Inherits System.Windows.Forms.Form#Region " Windows 窗体设计器生成的代码 "Public Sub New() MyBase.New()'该调用是 Windows 窗体设计器所必需的。 InitializeComponent()'在 InitializeComponent() 调用之后添加任何初始化End Sub'窗体重写 dispose 以清理组件列表。 Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub'Windows 窗体设计器所必需的 Private components As System.ComponentModel.IContainer'注意: 以下过程是 Windows 窗体设计器所必需的 '可以使用 Windows 窗体设计器修改此过程。 '不要使用代码编辑器修改它。 Friend WithEvents TextBox1 As System.Windows.Forms.TextBox System.Diagnostics.DebuggerStepThrough() Private Sub InitializeComponent() Me.TextBox1 = New System.Windows.Forms.TextBox Me.SuspendLayout() ' 'TextBox1 ' Me.TextBox1.Location = New System.Drawing.Point(112, 96) Me.TextBox1.Name = "TextBox1" Me.TextBox1.TabIndex = 0 Me.TextBox1.Text = "" ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14) Me.ClientSize = New System.Drawing.Size(292, 266) Me.Controls.Add(Me.TextBox1) Me.Name = "Form1" Me.Text = "Form1" Me.ResumeLayout(False)End Sub#End Region Dim str As String = ""Private Sub TextBox1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyUp If (e.KeyValue 47 And e.KeyValue 58) Or (e.KeyValue 95 And e.KeyValue 106) Or (e.KeyValue = 8) Or (e.KeyValue = 45) Or (e.KeyValue = 46) Then str = TextBox1.Text Else TextBox1.Text = str TextBox1.Focus() End If End SubEnd Class(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/bianchengyuyan/)