Dim Key1 As Microsoft.Win32.RegistryKey Key1 = My.Computer.Registry.CurrentUser '返回當前用戶鍵 Dim Key2 As Microsoft.Win32.RegistryKey Key2 = Key1.OpenSubKey("northsnow") '返回當前用戶鍵下的northsnow鍵 If Key2 Is Nothing Then Key2 = Key1.CreateSubKey("northsnow") '如果鍵不存在就創建它 End If

　　Dim Key1 As Microsoft.Win32.RegistryKey Key1 = My.Computer.Registry.CurrentUser '返回當前用戶鍵 Dim Key2 As Microsoft.Win32.RegistryKey Key2 = Key1.OpenSubKey("northsnow") '返回當前用戶鍵下的northsnow鍵 If Not Key2 Is Nothing Then Key1.DeleteSubKey("northsnow") '如果鍵不存在就創建它 End If

　　Dim Key1 As Microsoft.Win32.RegistryKey Key1 = My.Computer.Registry.CurrentUser '返回當前用戶鍵 Dim Key2 As Microsoft.Win32.RegistryKey Key2 = Key1.OpenSubKey("northsnow", True) '返回當前用戶鍵下的northsnow鍵,

　　如果想創建項，必須指定第二個參數為true If Key2 Is Nothing Then Key2 = Key1.CreateSubKey("northsnow") '如果鍵不存在就創建它 End If '創建項，如果不存在就創建，如果存在則覆蓋 Key2.SetValue("name", "塞北的雪") Key2.SetValue("sex", True) Key2.SetValue("age", 30) '返回項值 Dim sb As New System.Text.StringBuilder sb.AppendLine(Key2.GetValue("name")) sb.AppendLine(Key2.GetValue("sex")) sb.AppendLine(Key2.GetValue("age")) MsgBox(sb.ToString) '查驗某個項是否存在 If (Key2.GetValue("name")) Is Nothing Then MsgBox("no") Else MsgBox("yes") End If If (Key2.GetValue("name2")) Is Nothing Then MsgBox("no") Else MsgBox("yes") End If

　　'輸出 ' 塞北的雪 'True '30 'yes 'no

　　Dim sb As New System.Text.StringBuilder '返回遍歷結果 Dim sb2 As New System.Text.StringBuilder '返回讀取出錯的注冊表鍵 Private Sub Button3_Click()Sub Button3_Click(ByVal sender As System.Object,

　　ByVal e As System.EventArgs) Handles Button3.Click Dim Key1 As Microsoft.Win32.RegistryKey Key1 = My.Computer.Registry.CurrentUser '返回當前用戶鍵 If Not Key1 Is Nothing Then sb.AppendLine(Key1.Name) readValue(Key1) readReg(Key1) End If Me.TextBox1.Text = sb.ToString Me.TextBox2.Text = sb2.ToString End Sub '遍歷注冊表鍵樹 Private Sub readReg()Sub readReg(ByVal r As Microsoft.Win32.RegistryKey) If r.SubKeyCount > 0 Then Dim keyName() As String Dim keyTemp As Microsoft.Win32.RegistryKey keyName = r.GetSubKeyNames Dim i As Integer For i = 0 To keyName.GetLength(0) - 1 Try sb.AppendLine(keyName(i)) keyTemp = r.OpenSubKey(keyName(i), True) readValue(keyTemp) readReg(keyTemp) Catch ex As Exception sb2.AppendLine(keyName(i)) End Try Next End If End Sub '遍歷某鍵下的項 Private Sub readValue()Sub readValue(ByVal r As Microsoft.Win32.RegistryKey) If r.ValueCount > 0 Then Dim valueName() As String Dim i As Integer valueName = r.GetValueNames For i = 0 To valueName.GetLength(0) - 1 sb.AppendLine("####") sb.Append(r.Name) sb.Append("----") sb.Append(r.GetValue(valueName(i)).ToString) Next End If End Sub