RegistryKey.SetValue 方法
定义
重要
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设置注册表项中的名称/值对的值。 从所存储数据的类型或指定的 RegistryValueKind 确定注册表数据类型，具体取决于重载。
重载
| SetValue(String, Object) |
设置指定的名称/值对。 |
| SetValue(String, Object, RegistryValueKind) |
使用指定的注册表数据类型设置注册表项中的名称/值对的值。 |
SetValue(String, Object)
- Source:
- RegistryKey.cs
设置指定的名称/值对。
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)参数
- name
- String
要存储的值的名称。
- value
- Object
要存储的数据。
例外
value 为 null。
value 不是受支持的数据类型。
包含指定值的 RegistryKey 已关闭（无法访问关闭的项）。
RegistryKey 只读，因此无法写入；例如，项不是用写访问权限打开的。
用户没有创建或修改注册表项所需的权限。
RegistryKey 对象表示根级别节点，操作系统为 Windows 2000、Windows XP 或 Windows Server 2003。
示例
下面的代码示例演示 方法在设置值时如何 SetValue 确定注册表数据类型。 该示例创建一个测试键，并将不同数据类型的值添加到该键。 然后，该示例读取名称/值对并将其显示到控制台，并使用 GetValueKind 方法显示相应的注册表数据类型。
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
注解
由于许多值可以存储在注册表中的每个项中，因此必须使用 name 参数来指定要设置的特定值。
注意
注册表项可以有一个不与任何名称关联的值。 当注册表编辑器中显示此未命名值时，将显示字符串“ (Default) ”，而不是名称。 若要设置此未命名值，请 null 为 name指定 或空字符串 (“”) 。
若要在键中设置值，必须打开具有写入访问权限的密钥。 打开具有写入访问权限的密钥后，可以更改该密钥中的任何名称/值对。
如果键中不存在指定的 name ，则会创建它，并将关联的值设置为 value。
的 SetValue 此重载将 64 位整数存储为字符串 (RegistryValueKind.String) 。 若要将 64 位数字存储为 RegistryValueKind.QWord 值，请使用 SetValue(String, Object, RegistryValueKind) 指定 的 RegistryValueKind重载。
此 重载 SetValue 将所有字符串值存储为 RegistryValueKind.String，即使它们包含对环境变量的可扩展引用也是如此。 若要将字符串值另存为 (RegistryValueKind.ExpandString) 的可展开字符串，请使用 SetValue(String, Object, RegistryValueKind) 指定 的 RegistryValueKind重载。
此方法重载将 32 位整数以外的数值类型存储为字符串。 枚举元素存储为包含元素名称的字符串。
注意
不要以恶意程序可能创建数千个无意义的子项或键/值对的方式公开 RegistryKey 对象。 例如，不允许调用方输入任意键或值。
另请参阅
适用于
SetValue(String, Object, RegistryValueKind)
- Source:
- RegistryKey.cs
使用指定的注册表数据类型设置注册表项中的名称/值对的值。
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)参数
- name
- String
要存储的值的名称。
- value
- Object
要存储的数据。
- valueKind
- RegistryValueKind
在存储数据时要使用的注册表数据类型。
- 属性
例外
value 为 null。
value 的类型与 valueKind 指定的注册表数据类型不匹配，因此，未能正确转换该数据。
包含指定值的 RegistryKey 已关闭（无法访问关闭的项）。
RegistryKey 只读，因此无法写入；例如，项不是用写访问权限打开的。
用户没有创建或修改注册表项所需的权限。
RegistryKey 对象表示根级别节点，操作系统为 Windows 2000、Windows XP 或 Windows Server 2003。
示例
下面的代码示例创建一个测试键，并使用 SetValue 方法存储多个值，并为每个值指定注册表数据类型。 然后，该示例读取名称/值对并将其显示到控制台，并使用 GetValueKind 方法显示相应的注册表数据类型。
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.***]
注解
由于许多值可以存储在注册表中的每个项中，因此必须使用 name 参数来指定要设置的特定值。
注意
注册表项可以有一个不与任何名称关联的值。 当注册表编辑器中显示此未命名值时，将显示字符串“ (Default) ”，而不是名称。 若要设置此未命名值，请 null 为 name指定 或空字符串 (“”) 。
若要在键中设置值，必须打开具有写入访问权限的密钥。 打开具有写入访问权限的密钥后，可以更改该密钥中的任何名称/值对。
如果键中不存在指定的 name ，则会创建它，并将关联的值设置为 value。
如果指定的 value 的类型与指定的 valueKind不匹配，并且无法转换数据， ArgumentException 则会引发 。 例如，可以将 存储 System.Int64 为 RegistryValueKind.DWord，但前提是其值小于 的 System.Int32最大值。 不能将单个字符串值存储为 RegistryValueKind.MultiString。
注意
如果为 RegistryValueKind.DWord 或 RegistryValueKind.QWord传递装箱值，则使用固定区域性完成转换。
注意
不要以恶意程序可能创建数千个无意义的子项或键/值对的方式公开 RegistryKey 对象。 例如，不允许调用方输入任意键或值。
