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Getting started quickly / Zipping files from memory directly to a zip file
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    Zipping files from memory directly to a zip file
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    Compression from memory to a zip file

    Xceed Zip allows you to compress blocks of memory into files in a zip file. To accomplish this, perform the following 6 steps:

    Below you will find a VB, Delphi and C# examples.

    Here is sample code for these 6 steps (excluding the code for the QueryMemoryFile and ZippingMemoryFile events):

    Visual Basic Copy Code

    ' Don't forget to put an Xceed Zip control on a form
    Dim ResultCode As xcdError 

    Call XceedZip1.License( "your license key" )

    XceedZip1.ZipFilename = "c:\outgoing\pictures.zip"
    XceedZip1.FilesToProcess = "c:\graphics\cars\*.bmp" 

    ResultCode = XceedZip1.Zip 

    If ResultCode = xerSuccess Then
       MsgBox "Files zipped successfully." 
    Else
       MsgBox XceedZip1.GetErrorDescription(xvtError, ResultCode) 
    EndIf

    Delphi Copy Code

    var xErr : xcdError; 
    begin

       XceedZip1.License( 'your license key' );
       XceedZip1.ZipFilename := 'c:\outgoing\pictures.zip'; 
       XceedZip1.FilesToProcess := 'c:\graphics\cars\*.bmp';  

       xErr := XceedZip1.Zip; 
       ShowMessage( XceedZip1.GetErrorDescription( xvtError, xErr ) ); 
    end;

    C# Copy Code

    //Subscribe to the ZippingMemoryFile and the QueryMemoryFile events

    this.zip.License( @"your license key" );

    this.zip.ZippingMemoryFile += new AxXceedZipLib._IXceedZipEvents_ZippingMemoryFileEventHandler(this.zip_ZippingMemoryFile);

    this.zip.QueryMemoryFile += new AxXceedZipLib._IXceedZipEvents_QueryMemoryFileEventHandler(this.zip_QueryMemoryFile); 

    zip.ZipFilename = @"c:\pictures.zip";
    zip.FilesToProcess = @"c:\graphics\cars\*.bmp"; 

    xcdError ResultCode = zip.Zip();

    if(  ResultCode == xcdError.xerSuccess  )
    {
       MessageBox.Show("Files zipped successfully." );
    }
    else
    {
       MessageBox.Show( zip.GetErrorDescription( xcdValueType.xvtError, ( int )ResultCode ) );
    }

    Here is sample code to put into the QueryMemoryFile event handler. This sample assumes you only have a single file to zip up from memory:

    Visual Basic Copy Code

    sFilename = "Readme.txt" ' necessary 

    If lUserTag = 0 Then
       bFileProvided = True
    Else
       bFileProvided = False
    End If

    Delphi Copy Code

    if ( lUserTag = 0 ) then

    begin
       sFilename := 'readme.txt'; 
       bFileProvided := true; 
    end
    else
       bFileProvided := false;

    C# Copy Code
    private void zip_QueryMemoryFile(object sender, AxXceedZipLib._IXceedZipEvents_QueryMemoryFileEvent e)
    { 
       e.sFilename = "Readme.txt"; 

       if (e.lUserTag == 0)

          e.bFileProvided = true; 

       else

          e.bFileProvided = false;
    }

    Here is sample code to put into the ZippingMemoryFile event handler:

    Visual Basic Copy Code

    vaDataToCompress = "Welcome to my special collection of " +

     "car pictures. These .bmp files can be loaded in MS Paint..."

    bEndOfData = True

    Delphi Copy Code

    vaDataToCompress := 'Welcome to my special collection of ' +

    'car pictures. These .bmp files can be ' + 

    'loaded in MS Paint...'; 

    bEndOfData := True;

    C# Copy Code
    private void zip_ZippingMemoryFile(object sender,
                                       AxXceedZipLib._IXceedZipEvents_ZippingMemoryFileEvent e)
    {

       e.vaDataToCompress = "Welcome to my special collection of " + 
                            "car pictures. These .bmp files can be loaded in MS Paint...";
    }        

     

     

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