在C#for windows Vista/7中显示身份验证对话框
我想从用户处获取网络登录凭据 我将.NET3.5与C#一起使用。 到目前为止,我使用了在C#for windows Vista/7中显示身份验证对话框,c#,pinvoke,C#,Pinvoke,我想从用户处获取网络登录凭据 我将.NET3.5与C#一起使用。 到目前为止,我使用了CredUIPromptForCredentials调用 (可以找到关于如何使用它的非常有用的链接) 我的问题是,CredUIPromptForCredentialsAPI调用显示的是旧的windows2000/XP凭据对话框,而不是新的Vista/7对话框 我在msdn上读到我应该使用这个函数 有人能举个例子说明如何将它与C#一起使用吗? 我还需要能够获取输入的凭据。以下是一些代码: 我设法实现了一个适合我的
CredUIPromptForCredentials
调用
(可以找到关于如何使用它的非常有用的链接)
我的问题是,CredUIPromptForCredentials
API调用显示的是旧的windows2000/XP凭据对话框,而不是新的Vista/7对话框
我在msdn上读到我应该使用这个函数
有人能举个例子说明如何将它与C#一起使用吗?
我还需要能够获取输入的凭据。以下是一些代码:
我设法实现了一个适合我的解决方案 以下是源代码:
[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 static void GetCredentialsVistaAndUp(string serverName, out NetworkCredential networkCredential)
{
CREDUI_INFO credui = new CREDUI_INFO();
credui.pszCaptionText = "Please enter the credentails for " + serverName;
credui.pszMessageText = "DisplayedMessage";
credui.cbSize = Marshal.SizeOf(credui);
uint authPackage = 0;
IntPtr outCredBuffer = new IntPtr();
uint outCredSize;
bool save = false;
int result = CredUIPromptForWindowsCredentials(ref credui,
0,
ref authPackage,
IntPtr.Zero,
0,
out outCredBuffer,
out outCredSize,
ref save,
1 /* Generic */);
var usernameBuf = new StringBuilder(100);
var passwordBuf = new StringBuilder(100);
var domainBuf = new StringBuilder(100);
int maxUserName = 100;
int maxDomain = 100;
int 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);
networkCredential = new NetworkCredential()
{
UserName = usernameBuf.ToString(),
Password = passwordBuf.ToString(),
Domain = domainBuf.ToString()
};
return;
}
}
networkCredential = null;
}
我仍然需要解决一些细节问题,比如如何记住最后输入的凭证等等
但是主要部分是有效的。我看到了这篇文章。问题是我需要提取在对话框中输入的凭据。我认为它需要使用CredUnPackAuthenticationBuffer api调用。我看到您调用了函数
GetCredentialsVistaAndUp
,这对xp也有效还是没有测试?@ChrisjanLodewyks-它对xp不起作用。XP不支持此对话框。它只能在Vista和更高版本上使用,就像方法名所暗示的那样。我不断地得到一个神秘的返回码0x1F/decimal 31。事实证明,我必须为所有内容设置CharSet=CharSet.Unicode,然后它工作得很好。你知道如何获取最后输入的凭据吗?
[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 static void GetCredentialsVistaAndUp(string serverName, out NetworkCredential networkCredential)
{
CREDUI_INFO credui = new CREDUI_INFO();
credui.pszCaptionText = "Please enter the credentails for " + serverName;
credui.pszMessageText = "DisplayedMessage";
credui.cbSize = Marshal.SizeOf(credui);
uint authPackage = 0;
IntPtr outCredBuffer = new IntPtr();
uint outCredSize;
bool save = false;
int result = CredUIPromptForWindowsCredentials(ref credui,
0,
ref authPackage,
IntPtr.Zero,
0,
out outCredBuffer,
out outCredSize,
ref save,
1 /* Generic */);
var usernameBuf = new StringBuilder(100);
var passwordBuf = new StringBuilder(100);
var domainBuf = new StringBuilder(100);
int maxUserName = 100;
int maxDomain = 100;
int 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);
networkCredential = new NetworkCredential()
{
UserName = usernameBuf.ToString(),
Password = passwordBuf.ToString(),
Domain = domainBuf.ToString()
};
return;
}
}
networkCredential = null;
}