1) 保护参数配置
2) 注册表访问
using System.Security.Permissions; [RegistryPermissionAttribute(SecurityAction.PermitOnly, All = @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Jet\4.0\Engines\Jet 4.0")]
private static void UpdateOS32RegisterItem()
{
using (RegistryKey currentKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Jet\4.0\Engines\Jet 4.0", true))
{
currentKey.SetValue("MaxLocksPerFile", 0xF4240, RegistryValueKind.DWord);
currentKey.Close();
}
}
该种写法混淆后会出现如下的错误:
解决方法:
添加 应用程序清单文件,在其中加入
<?xml version="1.0" encoding="utf-8"?>
<asmv1:assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv1="urn:schemas-microsoft-com:asm.v1" xmlns:asmv2="urn:schemas-microsoft-com:asm.v2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<assemblyIdentity version="1.0.0.0" name="MyApplication.app"/>
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
<security>
<requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
<!-- UAC 清单选项
如果希望更改 Windows 用户帐户控制级别,请用以下节点之一替换
requestedExecutionLevel 节点。 <requestedExecutionLevel level="asInvoker" uiAccess="false" />
<requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
<requestedExecutionLevel level="highestAvailable" uiAccess="false" /> 如果您希望利用文件和注册表虚拟化提供
向后兼容性,请删除 requestedExecutionLevel 节点。
-->
<requestedExecutionLevel level="asInvoker" uiAccess="false" />
<requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
</requestedPrivileges>
</security>
</trustInfo>
</asmv1:assembly>
修改代码,如下:
private static void UpdateOS32RegisterItem()
{
System.Security.Principal.WindowsIdentity identity = System.Security.Principal.WindowsIdentity.GetCurrent();
System.Security.Principal.WindowsPrincipal principal = new System.Security.Principal.WindowsPrincipal( identity );
if (principal.IsInRole(System.Security.Principal.WindowsBuiltInRole.Administrator))
{
using (RegistryKey currentKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Jet\4.0\Engines\Jet 4.0", true))
{
currentKey.SetValue("MaxLocksPerFile", 0xF4240, RegistryValueKind.DWord);
currentKey.Close();
}
}
}