C#, ASP.NETUse Window Impersonation in Forms-Authentication-Based ASP.NET Apps
Listing 1. The LogonUser method returns a user token, which you can use as a constructor parameter when creating a WindowsIdentity (the second step of the authentication phase). Call GetLastError to try to determine why the logon failed if it didn't succeed. ![]() [DllImport("advapi32.dll")] public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, out int phToken); [DllImport("Kernel32.dll")] public static extern int GetLastError(); private void Loginbtn_Click(object sender, System.EventArgs e) { int ret=0 ; int l_token1; bool loggedOn = LogonUser(TextBoxUser.Text, "servername", TextBoxPWD.Text, //Logon type=LOGON32_LOGON_NETWORK_CLEARTEXT. 3, //Logon provider=LOGON32_PROVIDER_DEFAULT. 0, //User token for specified user is returned //here. out l_token1); //Call GetLastError to try to determine why //logon failed if it did not succeed. if (loggedOn == false) ret = GetLastError(); if (ret != 0) throw new Exception ("Invalid Username or Password"); |