Delegate WriteDelegate

Delegate in which the application writes the ZipEntry content for the named entry.

Namespace: OfficeOpenXml.Packaging.Ionic.Zip

Assembly: EPPlus.dll

Syntax

public delegate void WriteDelegate(string entryName, Stream stream);

Parameters

Type	Name	Description
System.String	entryName	The name of the entry that must be written.
System.IO.Stream	stream	The stream to which the entry data should be written.

Remarks

When you add an entry and specify a WriteDelegate, via OfficeOpenXml.Packaging.Ionic.Zip.ZipFile.AddEntry(System.String,OfficeOpenXml.Packaging.Ionic.Zip.WriteDelegate), the application code provides the logic that writes the entry data directly into the zip file.

Examples

This example shows how to define a WriteDelegate that obtains a DataSet, and then writes the XML for the DataSet into the zip archive. There's no need to save the XML to a disk file first.

private void WriteEntry (String filename, Stream output)
{
    DataSet ds1 = ObtainDataSet();
    ds1.WriteXml(output);
}

private void Run()
{
    using (var zip = new ZipFile())
    {
        zip.AddEntry(zipEntryName, WriteEntry);
        zip.Save(zipFileName);
    }
}

Private Sub WriteEntry (ByVal filename As String, ByVal output As Stream)
    DataSet ds1 = ObtainDataSet()
    ds1.WriteXml(stream)
End Sub

Public Sub Run()
    Using zip = New ZipFile
        zip.AddEntry(zipEntryName, New WriteDelegate(AddressOf WriteEntry))
        zip.Save(zipFileName)
    End Using
End Sub