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Main Features
1. Supports Windows 95, 98, ME, NT4, Windows 2000 (NT5), XP & 2003.
2. Generates CRC32 Checksum in hex on files and text strings
3. Optional numeric output
4. Full installer
5. Written in VC++ for ultimate speed
6. Example ASP, .NET, VB, PHP, ColdFusion & VC++ Sample code included.

What's new ?
v1.04 25th Sep 2006

1. added php and coldfusion examples.
 

What is CRC32 COM Component ?

CRC32 COM Component is for ASP, .NET, Cold Fusion, VB, PHP, VC++ and other languages.

The com component will quickly generate a CRC32 checksum from files or a text string in hex or numeric as the official polynomial used by CRC-32 in PKZip, WinZip and Ethernet.

Example .asp, .net, vb, php, coldfusion & vc++ code included

simple ASP example of usage:-

Set Obj = Server.CreateObject("CRC32COM.CRC.1")
dim crc 
crc = Obj.getCRC("C:\yourfile.dat")
crc = Obj.getCRCFromString("Test string")

simple VC++ example of usage:-

CRC32COMLib::ICRCPtr *test = NULL;
struct __declspec(uuid("{CFA74BB7-DC31-4434-ADE6-D7D7BFBB3180}")) IClass;
test = new CRC32COMLib::ICRCPtr( __uuidof(IClass) );
(*test)->numeric = false;
CString crcfile = (char *)(_bstr_t)(*test)->getCRC((char *)(_bstr_t)"c:\\yourfile.dat");

simple VB example of usage:-

Dim obj As CRC32COMLib.CRC
Set obj = New CRC32COMLib.CRC
obj.Numeric = False
dim crc
crc = obj.getCRC("C:\yourfile.dat")

simple ASP .NET using C# example of usage:-

CRC32Com.CRC crc = new CRC32Com.CRC();
lblFile.Text = "C:\yourfile.dat";
lblMessage.Text = crc.getCRC(lblFile.Text);

simple ColdFusion example of usage:-

 <cfobject action = "Create" type = "COM" class = CRC32COM.CRC name = "Obj">
<cfoutput>
Filename: "C:\yourfile.dat" : CRC32 : #Obj.getCRC( "C:\yourfile.dat" )#
String: "Test String" : CRC32 Hex: #Obj.getCRCFromString("Test String")#
</cfoutput>

simple PHP example of usage:-

$Obj = new COM("CRC32COM.CRC");
$filename = "C:\\Inetpub\\wwwroot\\CRC32\\Examples\\2pages.pdf";
$crc = $Obj->getCRC($filename);
$str = "Test string";
$crcstr = $Obj->getCRCFromString($str);

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HTML Help
 Full help with walk-thru guide.