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internetgetcookieex (wininet)
 
.
Summary
TODO - a short description

C# Signature:

[DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData, ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved);

VB Signature:

Declare Function InternetGetCookieEx Lib "wininet.dll" Alias "InternetGetCookieExA" (ByVal pchURL As String, ByVal pchCookieName As String, _
    ByVal pchCookieData As System.Text.StringBuilder, ByRef pcchCookieData As Integer, ByVal flags As Integer, ByVal reserved As Integer) As _
    <System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.Bool)> Boolean

User-Defined Types:

None.

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

    //取当前webBrowser登录后的Cookie值  
    [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
    static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData, ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved);

    //取出Cookie,当登录后才能取    
    private static string GetCookieString(string url)
    {
        // Determine the size of the cookie      
        UInt32 datasize = 256*1024;
        StringBuilder cookieData = new StringBuilder(Convert.ToInt32(datasize));
        if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, IntPtr.Zero))
        {
        if (datasize < 0)
            return null;
        // Allocate stringbuilder large enough to hold the cookie    
        cookieData = new StringBuilder(Convert.ToInt32(datasize));
        if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, IntPtr.Zero))
            return null;
        }
        return cookieData.ToString();
    }

Documentation

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