您可以尝试使用以下代码冒充另一个用户并运行操作：
[DllImport("advapi32.dll", SetLastError = true)]
private static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public extern static bool DuplicateToken(IntPtr existingTokenHandle, int impersonationLevel, ref IntPtr duplicateTokenHandle);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool CloseHandle(IntPtr handle);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool RevertToSelf();
[DllImport("userenv.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern bool LoadUserProfile(IntPtr hToken, ref ProfileInfo lpProfileInfo);
[DllImport("Userenv.dll", CallingConvention =
CallingConvention.Winapi, SetLastError = true, CharSet = CharSet.Auto)]
public static extern bool UnloadUserProfile
(IntPtr hToken, IntPtr lpProfileInfo);
[DllImport("ole32.dll")]
public static extern int CoInitializeSecurity(IntPtr pVoid, int
cAuthSvc, IntPtr asAuthSvc, IntPtr pReserved1, RpcAuthnLevel level,
RpcImpLevel impers, IntPtr pAuthList, EoAuthnCap dwCapabilities, IntPtr
pReserved3);
[StructLayout(LayoutKind.Sequential)]
public struct ProfileInfo
{
///
/// Specifies the size of the structure, in bytes.
///
public int dwSize;
///
/// This member can be one of the following flags:
/// PI_NOUI or PI_APPLYPOLICY
///
public int dwFlags;
///
/// Pointer to the name of the user.
/// This member is used as the base name of the directory
/// in which to store a new profile.
///
public string lpUserName;
///
/// Pointer to the roaming user profile path.
/// If the user does not have a roaming profile, this member can be NULL.
///
public string lpProfilePath;
///
/// Pointer to the default user profile path. This member can be NULL.
///
public string lpDefaultPath;
///
/// Pointer to the name of the validating domain controller, in NetBIOS format.
/// If this member is NULL, the Windows NT 4.0-style policy will not be applied.
///
public string lpServerName;
///
/// Pointer to the path of the Windows NT 4.0-style policy file.
/// This member can be NULL.
///
public string lpPolicyPath;
///
/// Handle to the HKEY_CURRENT_USER registry key.
///
public IntPtr hProfile;
}
public enum RpcAuthnLevel
{
Default = 0,
None = 1,
Connect = 2,
Call = 3,
Pkt = 4,
PktIntegrity = 5,
PktPrivacy = 6
}
public enum RpcImpLevel
{
Default = 0,
Anonymous = 1,
Identify = 2,
Impersonate = 3,
Delegate = 4
}
public enum EoAuthnCap
{
None = 0x00,
MutualAuth = 0x01,
StaticCloaking = 0x20,
DynamicCloaking = 0x40,
AnyAuthority = 0x80,
MakeFullSIC = 0x100,
Default = 0x800,
SecureRefs = 0x02,
AccessControl = 0x04,
AppID = 0x08,
Dynamic = 0x10,
RequireFullSIC = 0x200,
AutoImpersonate = 0x400,
NoCustomMarshal = 0x2000,
DisableAAA = 0x1000
}
const int LOGON32_PROVIDER_DEFAULT = 0;
const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
const int SECURITY_IMPERSONATION_LEVEL = 2;
public void RunOperationAsUser(Action operation, string userName, string domain, string password)
{
IntPtr token = IntPtr.Zero;
IntPtr dupToken = IntPtr.Zero;
//Impersonate the user
if (LogonUser(userName, domain, password, LOGON32_LOGON_NEW_CREDENTIALS, LOGON32_PROVIDER_DEFAULT, ref token))
{
if (DuplicateToken(token, SECURITY_IMPERSONATION_LEVEL, ref dupToken))
{
WindowsIdentity newIdentity = new WindowsIdentity(dupToken);
WindowsImpersonationContext impersonatedUser = newIdentity.Impersonate();
int retCode = CoInitializeSecurity(IntPtr.Zero, -1, IntPtr.Zero, IntPtr.Zero,
RpcAuthnLevel.PktPrivacy, RpcImpLevel.Impersonate, IntPtr.Zero, EoAuthnCap.DynamicCloaking, IntPtr.Zero);
if (impersonatedUser != null)
{
var username = WindowsIdentity.GetCurrent(TokenAccessLevels.MaximumAllowed).Name;
var sid = WindowsIdentity.GetCurrent(TokenAccessLevels.MaximumAllowed).User.Value;
ProfileInfo profileInfo = new ProfileInfo();
profileInfo.dwSize = Marshal.SizeOf(profileInfo);
profileInfo.lpUserName = userName;
profileInfo.dwFlags = 1;
Boolean loadSuccess = LoadUserProfile(dupToken, ref profileInfo);
}
operation();
impersonatedUser.Undo();
}
}
if (token != IntPtr.Zero)
{
CloseHandle(token);
}
if (dupToken != IntPtr.Zero)
{
try
{
CloseHandle(token);
}
catch
{ }
}
}
现在你可以做
RunOperationAsUser(() => {
GridViewRow rw = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer);
LinkButton lnkTxtFile = (LinkButton)rw.FindControl("lnkTxtFile");
string strFilename = lnkTxtFile.Text.Replace("/","\\");
System.IO.FileInfo targetFile = new System.IO.FileInfo(strFilename);
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + targetFile.Name);
Response.ContentType = "application/octet-stream";
Response.WriteFile(targetFile.FullName);
//HttpContext.Current.ApplicationInstance.CompleteRequest();
Response.End();
}, userName, domain, password)