.NET (Core and Framework)

Unhandled exception at 0x76a6ebf7 (shdocvw.dll) in explorer.exe:
0xC0000005: Access violation reading location 0x80004005.

[PreserveSig()]<br />
uint EnumObjects(IntPtr hwnd, SHCONTF grfFlags,	out System.IntPtr<br />
ppenumIDList);<br />

<br />
CTWShellEnum eList = new CTWShellEnum()<br />
ppenumIDList = Marshal.GetComInterfaceForObject(eList,<br />
typeof(IEnumIDList));<br />
return CTWShellConstants.S_OK;<br />

<br />
public interface IEnumIDList {<br />
[PreserveSig()]<br />
uint Next(<br />
  int celt,<br />
  [MarshalAs(UnmanagedType.LPArray), Out] out IntPtr[] rgelt,<br />
  out int pceltFetched);<br />
<br />
[PreserveSig()]<br />
uint Skip(int celt);<br />
<br />
[PreserveSig()]<br />
uint Reset();<br />
<br />
[PreserveSig()]<br />
uint Clone(out System.IntPtr ppenum);<br />
}<br />

// Convert the supplied password into a char array
char[] password = new char[50];
System.IO.StringReader reader = new System.IO.StringReader(this.textBoxPassword);
reader.Read(password, 0, 50);

// Copy the char array into a byte array for encryption
byte[] bPassword = new byte[50];
for(int i = 0; i < 50; i++)
{
	bPassword[i] = (byte)password[i]);
}

// Hash the password
System.Security.Cryptography.SHA1 shaM = new System.Security.Cryptography.SHA1Managed();
byte[] hash = shaM.ComputeHash(bPassword);

// Convert the hash into a char array
char[] cHash = new char[hash.Length];
for(int i = 0; i < hash.Length; i++)
{
	cHash[i] = (char)hash[i];
}

// Create a string from the hash for db verification
string hashword = new string(cHash);

// ... Perform db verification