Check Key Code range : Key Event « Event « VB.Net Tutorial






Check Key Code range
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class KeyCodeRangeShift
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    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

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents Label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(56, 80)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(184, 200)
        Me.Label1.TabIndex = 0
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
        If e.KeyCode >= Keys.A And e.KeyCode <= Keys.Z Then
            If e.Shift Then
                Label1.Text &= Chr(e.KeyCode)
            Else
                Label1.Text &= Char.ToLower(Chr(e.KeyCode))
            End If
        End If
    End Sub

    Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles MyBase.KeyPress
        Label1.Text &= e.KeyChar
    End Sub
End Class








11.6.Key Event
11.6.1.Check Key Code: F5Check Key Code: F5
11.6.2.Displaying information about a user-pressed keyDisplaying information about a user-pressed key
11.6.3.Determine whether user pressed Enter keyDetermine whether user pressed Enter key
11.6.4.Ignore key codeIgnore key code
11.6.5.Key event summaryKey event summary
11.6.6.Control KeyControl Key
11.6.7.Shift KeyShift Key
11.6.8.Check Key Code rangeCheck Key Code range