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這篇文章給大家介紹VB.NET中怎么實現注冊表操作,內容非常詳細,感興趣的小伙伴們可以參考借鑒,希望對大家能有所幫助。
VB.NET注冊表操作1,返回或創建一個注冊表鍵
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
VB.NET注冊表操作2,刪除注冊表鍵
Dim Key1 As Microsoft.Win32.
RegistryKeyKey1 = My.Computer.Registry.
CurrentUser '返回當前用戶鍵Dim Key2 As Microsoft.Win32.
RegistryKeyKey2 = 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
VB.NET注冊表操作3,創建或讀取注冊表項
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trueIf 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 ThenMsgBox("no")
Else
MsgBox("yes")
End If
If (Key2.GetValue("name2"))
Is Nothing ThenMsgBox("no")
Else
MsgBox("yes")
End If
'輸出
' 塞北的雪
'True
'30
'yes
'no
VB.NET注冊表操作4,遍歷注冊表
這個也非常簡單,在窗體上放一個按鈕和兩個文本框,添加如下的代碼
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.ClickDim 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
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