Class MappedFile

MappedFile is a utility class to read files on a file system. Because MappedFile file is derived from pdftron.Filters.Filter you can directly chain MappedFile objects to other 'pdftron.Filters'.

MappedFile objects support random access to files using the Seek method. Seek allows the read/write position to be moved to any position within the file. This is done through a shared memory mapped chunk manager. The byte offset is relative to the seek reference point, which can be the beginning, the current position, or the end of the underlying file, as represented by the three properties of the Filter.ReferencePos class. MappedFile objects are thread-safe, meaning separate copies of a MappedFile can Seek to different locations in the file, without conflicting with one another. Disk files always support random access. At the time of construction, the CanSeek() property value is set to true or false depending on the underlying file type.

Inheritance
System.Object
Filter
MappedFile
Implements
System.IDisposable
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: pdftron.Filters
Assembly: PDFNet.dll
Syntax
public class MappedFile : Filter, IDisposable
Remarks

.NET or Java applications should explicitly Close() files when they are not needed.

Constructors

MappedFile(String)

Create a new instance of MappedFile class with the specified path.

Declaration
public MappedFile(string filename)
Parameters
Type Name Description
System.String filename

filename
Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

Methods

Close()

close filter and release relevant resources

Declaration
public void Close()

Dispose(Boolean)

Declaration
[HandleProcessCorruptedStateExceptions]
protected override void Dispose(bool A_0)
Parameters
Type Name Description
System.Boolean A_0
Overrides

FileSize()

Gets File size.

Declaration
public int FileSize()
Returns
Type Description
System.Int32

the size of the current file.
Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

GetFilePath()

Gets file path

Declaration
public override string GetFilePath()
Returns
Type Description
System.String

file path
Overrides

Implements

System.IDisposable