Class FilePassRecord

This record is part of the file protection. It contains information about the read/write password of the file. All record contents following this record will be encrypted.

Inheritance
System.Object
Syncfusion.XlsIO.Parser.Biff_Records.BiffRecordRaw
FilePassRecord
Implements
System.ICloneable
Namespace: Syncfusion.XlsIO.Parser.Biff_Records
Assembly: Syncfusion.XlsIO.Base.dll
Syntax
[Biff]
public class FilePassRecord : BiffRecordRaw, ICloneable, IBiffStorage

Constructors

FilePassRecord()

Default constructor

Declaration
public FilePassRecord()

FilePassRecord(Int32)

Reserved for record's internal data array.

Declaration
public FilePassRecord(int iReserve)
Parameters
Type Name Description
System.Int32 iReserve

Amount of bytes for data array.
Exceptions
Type Condition
System.ArgumentOutOfRangeException

If amount of bytes requested is less than zero.

FilePassRecord(Stream, out Int32)

Read / initialize constructor.

Declaration
public FilePassRecord(Stream stream, out int itemSize)
Parameters
Type Name Description
System.IO.Stream stream

Stream from which record data should be read.
System.Int32 itemSize

Size of read item.
Exceptions
Type Condition
System.ArgumentNullException

If stream is not specified.
System.ApplicationException

If stream does not support read or seek operations.

Properties

Hash

Hash value calculated from the read/write password.

Declaration
public ushort Hash { get; set; }
Property Value
Type
System.UInt16

IsWeakEncryption

Indicates whether weak encryption is used.

Declaration
public bool IsWeakEncryption { get; set; }
Property Value
Type
System.Boolean

Key

Encryption key calculated from the read/write password.

Declaration
public ushort Key { get; set; }
Property Value
Type
System.UInt16

NeedDecoding

Declaration
public override bool NeedDecoding { get; }
Property Value
Type
System.Boolean
Overrides
Syncfusion.XlsIO.Parser.Biff_Records.BiffRecordRaw.NeedDecoding

StandardBlock

Returns content for BIFF8 standard encryption. Read-only.

Declaration
public FilePassStandardBlock StandardBlock { get; }
Property Value
Type
FilePassStandardBlock

Methods

CreateStandardBlock()

Creates internal standard encryption block.

Declaration
public void CreateStandardBlock()

GetStoreSize(ExcelVersion)

Size of the required storage space. Read-only.

Declaration
public override int GetStoreSize(ExcelVersion version)
Parameters
Type Name Description
ExcelVersion version
Returns
Type
System.Int32
Overrides
Syncfusion.XlsIO.Parser.Biff_Records.BiffRecordRaw.GetStoreSize(Syncfusion.XlsIO.ExcelVersion)

ParseStructure(DataProvider, Int32, Int32, ExcelVersion)

Parse structure of record. Convert Data buffer to special values according to record specification.

Declaration
public override void ParseStructure(DataProvider provider, int iOffset, int iLength, ExcelVersion version)
Parameters
Type Name Description
DataProvider provider

Object that provides access to the data.
System.Int32 iOffset

Offset to the record's data.
System.Int32 iLength

Length of the record's data.
ExcelVersion version

Excel version used for infill.
Overrides
Syncfusion.XlsIO.Parser.Biff_Records.BiffRecordRaw.ParseStructure(Syncfusion.XlsIO.Parser.Biff_Records.DataProvider, System.Int32, System.Int32, Syncfusion.XlsIO.ExcelVersion)

Implements

System.ICloneable