internal static extern int CredUIPromptForWindowsCredentials(ref CredentialUIInfo creditUR,
int authError,
ref uint authPackage,
IntPtr InAuthBuffer,
uint InAuthBufferSize,
out IntPtr refOutAuthBuffer,
out uint refOutAuthBufferSize,
ref bool fSave,
PromptForWindowsCredentialsFlags flags);
internal static extern CredentialUIReturnCodes CredUIPromptForCredentials(ref CredentialUIInfo creditUR,
string targetName,
IntPtr reserved1,
int iError,
StringBuilder userName,
int maxUserName,
StringBuilder password,
int maxPassword,
[MarshalAs(UnmanagedType.Bool)] ref bool pfSave,
CredentialUIFlags flags);
public static CredentialResult PromptForCredentials(IntPtr owner = default, string messageText = null, string captionText = null, string userName = null, CredentialSaveOption saveCredential = CredentialSaveOption.Unselected)
{
var credUI = new CredentialUIInfo
{
hwndParent = owner,
pszMessageText = messageText,
pszCaptionText = captionText,
hbmBanner = IntPtr.Zero,
};
var save = saveCredential == CredentialSaveOption.Selected ? true : false;
// Setup the flags and variables
credUI.cbSize = Marshal.SizeOf(credUI);
var errorcode = 0;
uint authPackage = 0;
var outCredBuffer = IntPtr.Zero;
var flags = PromptForWindowsCredentialsFlags.GenericCredentials | PromptForWindowsCredentialsFlags.EnumerateCurrentUser;
if (saveCredential != CredentialSaveOption.Hidden)
{
flags |= PromptForWindowsCredentialsFlags.ShowCheckbox;
}
// Prefill username
GetInputBuffer(userName, out var inCredBuffer, out var inCredSize);
// Setup the flags and variables
var result = Credui.CredUIPromptForWindowsCredentials(ref credUI,
errorcode,
ref authPackage,
inCredBuffer,
inCredSize,
out outCredBuffer,
out var outCredSize,
ref save,
flags);
FreeCoTaskMem(inCredBuffer);
if (result == 0 && GetCredentialsFromOutputBuffer(outCredBuffer, outCredSize, out userName, out var password, out var domain))
{
var credentialSaved = saveCredential == CredentialSaveOption.Hidden ? CredentialSaveOption.Hidden : (save ? CredentialSaveOption.Selected : CredentialSaveOption.Unselected);
return(new CredentialResult(userName, password, domain, credentialSaved));
}
return(null);
}
