C#

<br />
Assembly a = Assembly.LoadFrom("abc.dll");<br />
Type mm = a.GetType("abc");<br />
object o = Activator.CreateInstance(mm);<br />
object[] par = new object[] { };<br />
ds_LUT = (DataSet)(mm.InvokeMember("GetLutTable", BindingFlags.Default |<br />
             BindingFlags.InvokeMethod, null, o, par));<br />
<br />
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Is there a way to keep the dll open until I am "finished" with it so I can close it and open the other dll? That will be done during runtime.<br />
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Additional note:  The dll are in c# language and was created in Visual Studio.Net 2005 software.

TcpClient tcpClient = new TcpClient();<br />
tcpClient.Connect(Address, Port);<br />
NetworkStream TransferStream = tcpClient.GetStream();

try
{
    Process proc = new Process();
    string keyFile = '\"' + this.PublicSslKeyFile + '\"';
    string sigFile = '\"' + tempSigFile, true) + '\"';
    proc.StartInfo.Arguments = string.Format(" dgst -sha1 -verify {0} -signature {1}", 
                                             keyFile, sigFile);
    proc.StartInfo.FileName = @"C:\openssl\bin\openssl.exe";
    proc.StartInfo.UseShellExecute = false;
    proc.StartInfo.RedirectStandardOutput = true;
    proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
    proc.Start();
    StreamReader stdOut = proc.StandardOutput;
    // wait ten seconds for the process to end (this might be too long)
    proc.WaitForExit(10000);
    if (proc.HasExited)
    {
        string results = stdOut.ReadToEnd().ToLower();
        success = results.Contains("verify ok");
    }
}
catch (InvalidOperationException e)
{
    DoSomethingWith(e.ToString());
}

$verify = shell_exec("echo -n \"".$data."\"|openssl dgst -sha1 -verify \"".$public_ssl_key."\" -signature \"".$tmp_signature_file."\"");