RegistryKey.SetValue 方法
定義
重要
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設定登錄機碼中名稱/值組的值。 依據多載，從資料儲存的型別或從指定的 RegistryValueKind 判斷登錄資料型別。
多載
| SetValue(String, Object) |
設定指定的名稱/值組。 |
| SetValue(String, Object, RegistryValueKind) |
使用指定的登錄資料類型，設定登錄機碼中名稱/值組的值。 |
SetValue(String, Object)
設定指定的名稱/值組。
public:
void SetValue(System::String ^ name, System::Object ^ value);public void SetValue (string name, object value);public void SetValue (string? name, object value);member this.SetValue : string * obj -> unitPublic Sub SetValue (name As String, value As Object)參數
- name
- String
要儲存的值的名稱。
- value
- Object
要儲存的資料。
例外狀況
value 為 null。
value 是不支援的資料型別。
包含指定值的 RegistryKey 已經關閉 (關閉的機碼無法存取)。
RegistryKey 是唯讀的，無法被寫入，例如沒有以寫入權限開啟機碼。
使用者沒有建立或修改登錄機碼所需的使用權限。
RegistryKey 物件表示根層級節點，且作業系統是 Windows 2000、Windows XP 或 Windows Server 2003。
範例
下列程式代碼範例顯示方法在設定值時如何 SetValue 判斷登錄數據類型。 此範例會建立測試索引鍵，並將不同數據類型的值新增至索引鍵。 然後，此範例會讀取名稱/值組，並將其顯示給控制台，方法是使用 GetValueKind 方法來顯示對應的登錄數據類型。
using namespace System;
using namespace Microsoft::Win32;
int main()
{
// Delete and recreate the test key.
Registry::CurrentUser->DeleteSubKey( "RegistrySetValueExample", false );
RegistryKey ^ rk = Registry::CurrentUser->CreateSubKey( "RegistrySetValueExample" );
// Create name/value pairs.
// Numeric values that cannot be interpreted as DWord (int) values
// are stored as strings.
rk->SetValue( "LargeNumberValue1", (long)42 );
rk->SetValue( "LargeNumberValue2", 42000000000 );
rk->SetValue( "DWordValue", 42 );
array<String^>^temp0 = {"One","Two","Three"};
rk->SetValue( "MultipleStringValue", temp0 );
array<Byte>^temp1 = {10,43,44,45,14,255};
rk->SetValue( "BinaryValue", temp1 );
// This overload of SetValue does not support expanding strings. Use
// the overload that allows you to specify RegistryValueKind.
rk->SetValue( "StringValue", "The path is %PATH%" );
// Display all the name/value pairs stored in the test key, with
// the registry data type in parentheses.
//
array<String^>^valueNames = rk->GetValueNames();
System::Collections::IEnumerator^ myEnum = valueNames->GetEnumerator();
while ( myEnum->MoveNext() )
{
String^ s = safe_cast<String^>(myEnum->Current);
RegistryValueKind rvk = rk->GetValueKind( s );
switch ( rvk )
{
case RegistryValueKind::MultiString:
{
array<String^>^values = (array<String^>^)rk->GetValue( s );
Console::Write( "\r\n {0} ({1}) = \"{2}\"", s, rvk, values[ 0 ] );
for ( int i = 1; i < values->Length; i++ )
{
Console::Write( ", \"{0}\"", values[ i ] );
}
Console::WriteLine();
break;
}
case RegistryValueKind::Binary:
{
array<Byte>^bytes = (array<Byte>^)rk->GetValue( s );
Console::Write( "\r\n {0} ({1}) = {2:X2}", s, rvk, bytes[ 0 ] );
for ( int i = 1; i < bytes->Length; i++ )
{
// Display each byte as two hexadecimal digits.
Console::Write( " {0:X2}", bytes[ i ] );
}
Console::WriteLine();
break;
}
default:
Console::WriteLine( "\r\n {0} ({1}) = {2}", s, rvk, rk->GetValue( s ) );
break;
}
}
}
using System;
using Microsoft.Win32;
public class Example
{
public static void Main()
{
// Delete and recreate the test key.
Registry.CurrentUser.DeleteSubKey("RegistrySetValueExample", false);
RegistryKey rk = Registry.CurrentUser.CreateSubKey("RegistrySetValueExample");
// Create name/value pairs.
// Numeric values that cannot be interpreted as DWord (int) values
// are stored as strings.
rk.SetValue("LargeNumberValue1", (long) 42);
rk.SetValue("LargeNumberValue2", 42000000000);
rk.SetValue("DWordValue", 42);
rk.SetValue("MultipleStringValue", new string[] {"One", "Two", "Three"});
rk.SetValue("BinaryValue", new byte[] {10, 43, 44, 45, 14, 255});
// This overload of SetValue does not support expanding strings. Use
// the overload that allows you to specify RegistryValueKind.
rk.SetValue("StringValue", "The path is %PATH%");
// Display all name/value pairs stored in the test key, with each
// registry data type in parentheses.
//
string[] valueNames = rk.GetValueNames();
foreach (string s in valueNames)
{
RegistryValueKind rvk = rk.GetValueKind(s);
switch (rvk)
{
case RegistryValueKind.MultiString :
string[] values = (string[]) rk.GetValue(s);
Console.Write("\r\n {0} ({1}) = \"{2}\"", s, rvk, values[0]);
for (int i = 1; i < values.Length; i++)
{
Console.Write(", \"{0}\"", values[i]);
}
Console.WriteLine();
break;
case RegistryValueKind.Binary :
byte[] bytes = (byte[]) rk.GetValue(s);
Console.Write("\r\n {0} ({1}) = {2:X2}", s, rvk, bytes[0]);
for (int i = 1; i < bytes.Length; i++)
{
// Display each byte as two hexadecimal digits.
Console.Write(" {0:X2}", bytes[i]);
}
Console.WriteLine();
break;
default :
Console.WriteLine("\r\n {0} ({1}) = {2}", s, rvk, rk.GetValue(s));
break;
}
}
}
}
Imports Microsoft.Win32
Public Class Example
Public Shared Sub Main()
' Delete and recreate the test key.
Registry.CurrentUser.DeleteSubKey("RegistrySetValueExample", False)
Dim rk As RegistryKey = Registry.CurrentUser.CreateSubKey("RegistrySetValueExample")
' Create name/value pairs.
' Numeric values that cannot be interpreted as DWord (int) values
' are stored as strings.
rk.SetValue("LargeNumberValue1", CType(42, Long))
rk.SetValue("LargeNumberValue2", 42000000000)
rk.SetValue("DWordValue", 42)
rk.SetValue("MultipleStringValue", New String() {"One", "Two", "Three"})
rk.SetValue("BinaryValue", New Byte() {10, 43, 44, 45, 14, 255})
' This overload of SetValue does not support expanding strings. Use
' the overload that allows you to specify RegistryValueKind.
rk.SetValue("StringValue", "The path is %PATH%")
' Display all name/value pairs stored in the test key, with each
' registry data type in parentheses.
'
Dim valueNames As String() = rk.GetValueNames()
Dim s As String
For Each s In valueNames
Dim rvk As RegistryValueKind = rk.GetValueKind(s)
Select Case rvk
Case RegistryValueKind.MultiString
Dim values As String() = CType(rk.GetValue(s), String())
Console.Write(vbCrLf + " {0} ({1}) = ""{2}""", s, rvk, values(0))
Dim i As Integer
For i = 1 To values.Length - 1
Console.Write(", ""{0}""", values(i))
Next i
Console.WriteLine()
Case RegistryValueKind.Binary
Dim bytes As Byte() = CType(rk.GetValue(s), Byte())
Console.Write(vbCrLf + " {0} ({1}) = {2:X2}", s, rvk, bytes(0))
Dim i As Integer
For i = 1 To bytes.Length - 1
' Display each byte as two hexadecimal digits.
Console.Write(" {0:X2}", bytes(i))
Next i
Console.WriteLine()
Case Else
Console.WriteLine(vbCrLf + " {0} ({1}) = {2}", s, rvk, rk.GetValue(s))
End Select
Next s
End Sub
End Class
備註
因為許多值都可以儲存在登錄中的每個機碼中，所以您必須使用 name 參數來指定您想要設定的特定值。
注意
登錄機碼可以有一個未與任何名稱相關聯的值。 當登錄編輯器中顯示這個未命名的值時，會出現 「 (Default) 」 字串，而不是名稱。 若要設定這個未命名的值，請為 指定 null 空字串 (“”“) name。
若要在索引鍵中設定值，您必須以寫入許可權開啟密鑰。 開啟具有寫入許可權的金鑰之後，您可以變更該索引鍵中的任何名稱/值組。
如果指定的 name 不存在於索引鍵中，則會建立它，並將相關聯的值設定為 value。
這個多 SetValue 載會將 64 位整數儲存為字串， RegistryValueKind.String () 。 若要將 64 位數位儲存為 RegistryValueKind.QWord 值，請使用 SetValue(String, Object, RegistryValueKind) 指定 的多 RegistryValueKind載。
這個 多 SetValue 載會將所有字串值儲存為 RegistryValueKind.String，即使它們包含環境變數的可展開參考也一樣。 若要將字串值儲存為可展開的字串 (RegistryValueKind.ExpandString) ，請使用 SetValue(String, Object, RegistryValueKind) 指定 的多 RegistryValueKind載。
這個方法多載會將32位整數以外的數值類型儲存為字元串。 列舉項目會儲存為包含項目名稱的字串。
警告
請勿以惡意程式可能會建立數千個無意義子機碼或索引鍵/值組的方式來公開 RegistryKey 物件。 例如，不允許呼叫端輸入任意索引鍵或值。
另請參閱
適用於
SetValue(String, Object, RegistryValueKind)
使用指定的登錄資料類型，設定登錄機碼中名稱/值組的值。
public:
void SetValue(System::String ^ name, System::Object ^ value, Microsoft::Win32::RegistryValueKind valueKind);public void SetValue (string name, object value, Microsoft.Win32.RegistryValueKind valueKind);public void SetValue (string? name, object value, Microsoft.Win32.RegistryValueKind valueKind);[System.Runtime.InteropServices.ComVisible(false)]
public void SetValue (string name, object value, Microsoft.Win32.RegistryValueKind valueKind);member this.SetValue : string * obj * Microsoft.Win32.RegistryValueKind -> unit[<System.Runtime.InteropServices.ComVisible(false)>]
member this.SetValue : string * obj * Microsoft.Win32.RegistryValueKind -> unitPublic Sub SetValue (name As String, value As Object, valueKind As RegistryValueKind)參數
- name
- String
要儲存之值的名稱。
- value
- Object
要儲存的資料。
- valueKind
- RegistryValueKind
儲存資料時要使用的登錄資料類型。
- 屬性
例外狀況
value 為 null。
value 的型別與 valueKind 所指定的登錄資料型別不符，因此，無法正確轉換資料。
包含指定值的 RegistryKey 已經關閉 (關閉的機碼無法存取)。
RegistryKey 是唯讀的，無法被寫入，例如沒有以寫入權限開啟機碼。
使用者沒有建立或修改登錄機碼所需的使用權限。
RegistryKey 物件表示根層級節點，且作業系統是 Windows 2000、Windows XP 或 Windows Server 2003。
範例
下列程式代碼範例會建立測試機碼，並使用 SetValue 方法來儲存數個值，並指定每個值的登錄數據類型。 然後，此範例會讀取名稱/值組，並將其顯示給控制台，方法是使用 GetValueKind 方法來顯示對應的登錄數據類型。
using namespace System;
using namespace Microsoft::Win32;
int main()
{
// Delete and recreate the test key.
Registry::CurrentUser->DeleteSubKey( "RegistryValueKindExample", false );
RegistryKey ^ rk = Registry::CurrentUser->CreateSubKey( "RegistryValueKindExample" );
// Create name/value pairs.
// This overload supports QWord (long) values.
rk->SetValue( "QuadWordValue", 42, RegistryValueKind::QWord );
// The following SetValue calls have the same effect as using the
// SetValue overload that does not specify RegistryValueKind.
//
rk->SetValue( "DWordValue", 42, RegistryValueKind::DWord );
rk->SetValue( "MultipleStringValue", gcnew array<String^>{
"One","Two","Three"
}, RegistryValueKind::MultiString );
rk->SetValue( "BinaryValue", gcnew array<Byte>{
10,43,44,45,14,255
}, RegistryValueKind::Binary );
rk->SetValue( "StringValue", "The path is %PATH%", RegistryValueKind::String );
// This overload supports setting expandable string values. Compare
// the output from this value with the previous string value.
rk->SetValue( "ExpandedStringValue", "The path is %PATH%", RegistryValueKind::ExpandString );
// Display all the name/value pairs stored in the test key, with the
// registry data type in parentheses.
//
array<String^>^valueNames = rk->GetValueNames();
System::Collections::IEnumerator^ myEnum = valueNames->GetEnumerator();
while ( myEnum->MoveNext() )
{
String^ s = safe_cast<String^>(myEnum->Current);
RegistryValueKind rvk = rk->GetValueKind( s );
switch ( rvk )
{
case RegistryValueKind::MultiString:
{
array<String^>^values = (array<String^>^)rk->GetValue( s );
Console::Write( "\r\n {0} ({1}) =", s, rvk );
for ( int i = 0; i < values->Length; i++ )
{
if (i != 0) Console::Write(",");
Console::Write( " \"{0}\"", values[ i ] );
}
Console::WriteLine();
break;
}
case RegistryValueKind::Binary:
{
array<Byte>^bytes = (array<Byte>^)rk->GetValue( s );
Console::Write( "\r\n {0} ({1}) =", s, rvk );
for ( int i = 0; i < bytes->Length; i++ )
{
// Display each byte as two hexadecimal digits.
Console::Write( " {0:X2}", bytes[ i ] );
}
Console::WriteLine();
break;
}
default:
Console::WriteLine( "\r\n {0} ({1}) = {2}", s, rvk, rk->GetValue( s ) );
break;
}
}
}
/*
This code example produces the following output:
QuadWordValue (QWord) = 42
DWordValue (DWord) = 42
MultipleStringValue (MultiString) =, "One", "Two", "Three"
BinaryValue (Binary) = 0A 2B 2C 2D 0E FF
StringValue (String) = The path is %PATH%
ExpandedStringValue (ExpandString) = The path is C:\Program Files\Microsoft.NET\SDK\v2.0\Bin;
[***The remainder of this output is omitted.***]
*/
using System;
using Microsoft.Win32;
public class Example
{
public static void Main()
{
// Delete and recreate the test key.
Registry.CurrentUser.DeleteSubKey("RegistryValueKindExample", false);
RegistryKey rk = Registry.CurrentUser.CreateSubKey("RegistryValueKindExample");
// Create name/value pairs.
// This overload supports QWord (long) values.
rk.SetValue("QuadWordValue", 42, RegistryValueKind.QWord);
// The following SetValue calls have the same effect as using the
// SetValue overload that does not specify RegistryValueKind.
//
rk.SetValue("DWordValue", 42, RegistryValueKind.DWord);
rk.SetValue("MultipleStringValue", new string[] {"One", "Two", "Three"}, RegistryValueKind.MultiString);
rk.SetValue("BinaryValue", new byte[] {10, 43, 44, 45, 14, 255}, RegistryValueKind.Binary);
rk.SetValue("StringValue", "The path is %PATH%", RegistryValueKind.String);
// This overload supports setting expandable string values. Compare
// the output from this value with the previous string value.
rk.SetValue("ExpandedStringValue", "The path is %PATH%", RegistryValueKind.ExpandString);
// Display all name/value pairs stored in the test key, with each
// registry data type in parentheses.
//
string[] valueNames = rk.GetValueNames();
foreach (string s in valueNames)
{
RegistryValueKind rvk = rk.GetValueKind(s);
switch (rvk)
{
case RegistryValueKind.MultiString :
string[] values = (string[]) rk.GetValue(s);
Console.Write("\r\n {0} ({1}) =", s, rvk);
for (int i = 0; i < values.Length; i++)
{
if (i != 0) Console.Write(",");
Console.Write(" \"{0}\"", values[i]);
}
Console.WriteLine();
break;
case RegistryValueKind.Binary :
byte[] bytes = (byte[]) rk.GetValue(s);
Console.Write("\r\n {0} ({1}) =", s, rvk);
for (int i = 0; i < bytes.Length; i++)
{
// Display each byte as two hexadecimal digits.
Console.Write(" {0:X2}", bytes[i]);
}
Console.WriteLine();
break;
default :
Console.WriteLine("\r\n {0} ({1}) = {2}", s, rvk, rk.GetValue(s));
break;
}
}
}
}
/*
This code example produces the following output:
QuadWordValue (QWord) = 42
DWordValue (DWord) = 42
MultipleStringValue (MultiString) =, "One", "Two", "Three"
BinaryValue (Binary) = 0A 2B 2C 2D 0E FF
StringValue (String) = The path is %PATH%
ExpandedStringValue (ExpandString) = The path is C:\Program Files\Microsoft.NET\SDK\v2.0\Bin;
[***The remainder of this output is omitted.***]
*/
Imports Microsoft.Win32
Public Class Example
Public Shared Sub Main()
' Delete and recreate the test key.
Registry.CurrentUser.DeleteSubKey("RegistryValueKindExample", False)
Dim rk As RegistryKey = Registry.CurrentUser.CreateSubKey("RegistryValueKindExample")
' Create name/value pairs.
' This overload supports QWord (long) values.
rk.SetValue("QuadWordValue", 42, RegistryValueKind.QWord)
' The following SetValue calls have the same effect as using the
' SetValue overload that does not specify RegistryValueKind.
'
rk.SetValue("DWordValue", 42, RegistryValueKind.DWord)
rk.SetValue("MultipleStringValue", New String() {"One", "Two", "Three"}, RegistryValueKind.MultiString)
rk.SetValue("BinaryValue", New Byte() {10, 43, 44, 45, 14, 255}, RegistryValueKind.Binary)
rk.SetValue("StringValue", "The path is %PATH%", RegistryValueKind.String)
' This overload supports setting expandable string values. Compare
' the output from this value with the previous string value.
rk.SetValue("ExpandedStringValue", "The path is %PATH%", RegistryValueKind.ExpandString)
' Display all name/value pairs stored in the test key, with each
' registry data type in parentheses.
'
Dim valueNames As String() = rk.GetValueNames()
Dim s As String
For Each s In valueNames
Dim rvk As RegistryValueKind = rk.GetValueKind(s)
Select Case rvk
Case RegistryValueKind.MultiString
Dim values As String() = CType(rk.GetValue(s), String())
Console.Write(vbCrLf & " {0} ({1}) =", s, rvk)
For i As Integer = 0 To values.Length - 1
If i <> 0 Then Console.Write(",")
Console.Write(" ""{0}""", values(i))
Next i
Console.WriteLine()
Case RegistryValueKind.Binary
Dim bytes As Byte() = CType(rk.GetValue(s), Byte())
Console.Write(vbCrLf & " {0} ({1}) =", s, rvk)
For i As Integer = 0 To bytes.Length - 1
' Display each byte as two hexadecimal digits.
Console.Write(" {0:X2}", bytes(i))
Next i
Console.WriteLine()
Case Else
Console.WriteLine(vbCrLf & " {0} ({1}) = {2}", s, rvk, rk.GetValue(s))
End Select
Next s
End Sub
End Class
'
'This code example produces the following output (some output is omitted):
'
' QuadWordValue (QWord) = 42
'
' DWordValue (DWord) = 42
'
' MultipleStringValue (MultiString) = "One", "Two", "Three"
'
' BinaryValue (Binary) = 0A 2B 2C 2D 0E FF
'
' StringValue (String) = The path is %PATH%
'
' ExpandedStringValue (ExpandString) = The path is C:\Program Files\Microsoft.NET\SDK\v2.0\Bin;
' [***The remainder of this output is omitted.***]
備註
因為許多值都可以儲存在登錄中的每個機碼中，所以您必須使用 name 參數來指定您想要設定的特定值。
注意
登錄機碼可以有一個未與任何名稱相關聯的值。 當登錄編輯器中顯示這個未命名的值時，會出現 「 (Default) 」 字串，而不是名稱。 若要設定這個未命名的值，請為 指定 null 空字串 (“”“) name。
若要在索引鍵中設定值，您必須以寫入許可權開啟密鑰。 開啟具有寫入許可權的金鑰之後，您可以變更該索引鍵中的任何名稱/值組。
如果指定的 name 不存在於索引鍵中，則會建立它，且相關聯的值會設定為 value。
如果指定的 型別不符合指定的 valuevalueKind，而且無法轉換數據， ArgumentException 則會擲回。 例如，您可以將 儲存 System.Int64 為 RegistryValueKind.DWord，但只有當其值小於 的 System.Int32最大值時。 您無法儲存單一字串值儲存為 RegistryValueKind.MultiString。
注意
如果 針對 或 RegistryValueKind.QWord傳遞 RegistryValueKind.DWord Boxed 值，則會使用不變異文化特性來完成轉換。
警告
請勿以惡意程式可能會建立數千個無意義子機碼或索引鍵/值組的方式來公開 RegistryKey 物件。 例如，不允許呼叫端輸入任意索引鍵或值。
