我正在创建一个Xaml / C#应用程序,我希望它能够通过登录提示弹出.
我想知道是否可以使用CredUIPromptForWindowsCredentials.
>显示Windows安全对话框
>获取输入的用户名&密码
>执行自定义验证
>如果验证成功 – >继续app
>如果验证失败,则为> – > – 告知用户无效的用户名或密码
我已经看过Windows Security login form?和http://www.pinvoke.net/default.aspx/credui/creduipromptforwindowscredentials.html?diff=y,但他们没有解释如何处理验证.
我真的很喜欢一个小例子,如果用户输入username =“Bo”和password =“123”,则其他成功显示错误消息并允许用户再次尝试.
该应用程序将安装在多台计算机上.
或者这根本不可能?
更新
灵感来自这个问题Show Authentication dialog in C# for windows Vista/7的答案
请注意,验证部分仅用于概念验证.
WindowsSecurityDialog.cs
public class WindowsSecurityDialog { public string CaptionText { get; set; } public string MessageText { get; set; } [DllImport("ole32.dll")] public static extern void CoTaskMemFree(IntPtr ptr); [StructLayout(LayoutKind.Sequential,CharSet = CharSet.Auto)] private struct CREDUI_INFO { public int cbSize; public IntPtr hwndParent; public string pszMessageText; public string pszCaptionText; public IntPtr hbmBanner; } [DllImport("credui.dll",CharSet = CharSet.Auto)] private static extern bool CredUnPackAuthenticationBuffer(int dwFlags,IntPtr pAuthBuffer,uint cbAuthBuffer,StringBuilder pszUserName,ref int pcchMaxUserName,StringBuilder pszDomainName,ref int pcchMaxDomainame,StringBuilder pszPassword,ref int pcchMaxPassword); [DllImport("credui.dll",CharSet = CharSet.Auto)] private static extern int CredUIPromptForWindowsCredentials(ref CREDUI_INFO notUsedHere,int authError,ref uint authPackage,IntPtr InAuthBuffer,uint InAuthBufferSize,out IntPtr refOutAuthBuffer,out uint refOutAuthBufferSize,ref bool fSave,int flags); public bool ValidateUser() { var credui = new CREDUI_INFO { pszCaptionText = CaptionText,pszMessageText = MessageText }; credui.cbSize = Marshal.SizeOf(credui); uint authPackage = 0; IntPtr outCredBuffer; uint outCredSize; bool save = false; const int loginErrorCode = 1326; //Login Failed var authError = 0; while (true) { var result = CredUIPromptForWindowsCredentials(ref credui,authError,ref authPackage,IntPtr.Zero,out outCredBuffer,out outCredSize,ref save,1 /* Generic */); var usernameBuf = new StringBuilder(100); var passwordBuf = new StringBuilder(100); var domainBuf = new StringBuilder(100); var maxUserName = 100; var maxDomain = 100; var maxPassword = 100; if (result == 0) { if (CredUnPackAuthenticationBuffer(0,outCredBuffer,outCredSize,usernameBuf,ref maxUserName,domainBuf,ref maxDomain,passwordBuf,ref maxPassword)) { //Todo: ms documentation says we should call this but i can't get it to work //SecureZeroMem(outCredBuffer,outCredSize); //clear the memory allocated by CredUIPromptForWindowsCredentials CoTaskMemFree(outCredBuffer); var networkCredential = new NetworkCredential() { UserName = usernameBuf.ToString(),Password = passwordBuf.ToString(),Domain = domainBuf.ToString() }; //Dummy Code replace with true User Validation if (networkCredential.UserName == "Bo" && networkCredential.Password == "1234") return true; else //login Failed show dialog again with login error { authError = loginErrorCode; } } } else return false; } } }
App.xaml.cs
protected override void OnStartup(StartupEventArgs e) { var windowsSecurityDialog = new WindowsSecurityDialog { CaptionText = "Enter your credentials",MessageText = "These credentials will be used to connect to YOUR APP NAME"; }; if (windowsSecurityDialog.ValidateUser()) base.OnStartup(e); }
解决方法
您将在
Ookii dialogs使用CredUIPromptForWindowsCredentials找到WPF和WinForms的完整实现.