Class SSTDictionary

Dictionary is used for grouping strings used by Excel in order to prevent doubling of data. Dictionary stores information as key string and value.

Inheritance

System.Object

SSTDictionary

Implements

IParseable

System.IDisposable

Namespace: Syncfusion.XlsIO.Implementation

Assembly: Syncfusion.XlsIO.UWP.dll

Syntax

public class SSTDictionary : Object, IParseable, IDisposable

Constructors

SSTDictionary(WorkbookImpl)

Default constructor. Reserves space for strings.

Declaration

public SSTDictionary(WorkbookImpl book)

Parameters

Type	Name	Description
WorkbookImpl	book

Fields

DEF_EMPTY_STRING_INDEX

Index of the empty string.

Declaration

public const int DEF_EMPTY_STRING_INDEX = -1

Field Value

Type
System.Int32

Properties

ActiveCount

Returns number of strings without removed items. Read-only.

Declaration

public int ActiveCount { get; }

Property Value

Type
System.Int32

Count

Gets quantity of unique strings.

Declaration

public int Count { get; }

Property Value

Type
System.Int32

Item[TextWithFormat]

Gets references count to specified string.

Declaration

public int this[TextWithFormat key] { get; }

Parameters

Type	Name	Description
TextWithFormat	key

Property Value

Type
System.Int32

Item[Int32]

Gets text with format.

Declaration

public TextWithFormat this[int index] { get; }

Parameters

Type	Name	Description
System.Int32	index

Property Value

Type
TextWithFormat

Keys

Gets list of strings.

Declaration

public object[] Keys { get; }

Property Value

Type
System.Object[]

OriginalSST

Gets / sets original SSTRecord.

Declaration

public SSTRecord OriginalSST { get; set; }

Property Value

Type
SSTRecord

UseHashForSearching

Declaration

public bool UseHashForSearching { get; set; }

Property Value

Type
System.Boolean

Workbook

Returns parent workbook. Read-only.

Declaration

public WorkbookImpl Workbook { get; }

Property Value

Type
WorkbookImpl

Methods

AddCopy(Int32, SSTDictionary, Dictionary<Int32, Int32>)

Adds copy of the string from another collection.

Declaration

public int AddCopy(int index, SSTDictionary sourceSST, Dictionary<int, int> dicFontIndexes)

Parameters

Type	Name	Description
System.Int32	index	Index of the string to add.
SSTDictionary	sourceSST	Source string table.
System.Collections.Generic.Dictionary<System.Int32, System.Int32>	dicFontIndexes	Dictionary with font indexes.

Returns

Type	Description
System.Int32	Index of the added string.

AddIncrease(Int32)

Adds string into dictionary. If the string exists in dictionary, add reference count. Method can influence on SST Indexes.

Declaration

public void AddIncrease(int index)

Parameters

Type	Name	Description
System.Int32	index	Index to the string.

AddIncrease(Object)

Adds string into dictionary. If the string exists in dictionary, add reference count. Method can influence on SST Indexes.

Declaration

public int AddIncrease(object key)

Parameters

Type	Name	Description
System.Object	key	String to add

Returns

Type	Description
System.Int32	Index of the added string.

AddIncrease(Object, Boolean)

Adds string into dictionary. If the string exists in dictionary, add reference count. Method can influence on SST Indexes.

Declaration

public int AddIncrease(object key, bool bIncrease)

Parameters

Type	Name	Description
System.Object	key	String to add
System.Boolean	bIncrease	Reference count for new entries.

Returns

Type	Description
System.Int32	Index of the added string.

Clear()

Clears the list.

Declaration

public void Clear()

Clone(WorkbookImpl)

Creates copy of the current instance.

Declaration

public object Clone(WorkbookImpl book)

Parameters

Type	Name	Description
WorkbookImpl	book

Returns

Type	Description
System.Object	Copy of the current instance.

Contains(Object)

Method checks if the dictionary contains the specified string.

Declaration

public bool Contains(object key)

Parameters

Type	Name	Description
System.Object	key	String which must be checked.

Returns

Type	Description
System.Boolean	True - string exists in dictionary, otherwise False.

DecreaseOnly(Int32)

Method decreases reference count of string without removing it.

Declaration

public void DecreaseOnly(int index)

Parameters

Type	Name	Description
System.Int32	index	Index of the string to decrease reference.

Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

Declaration

public void Dispose()

Finalize()

Declaration

protected override void Finalize()

GetSSTContentByIndex(Int32)

Returns SST content.

Declaration

public object GetSSTContentByIndex(int index)

Parameters

Type	Name	Description
System.Int32	index	Index of the target string.

Returns

Type	Description
System.Object	SST content object.

GetStringByIndex(Int32)

Returns RTF string by its index in the dictionary.

Declaration

public TextWithFormat GetStringByIndex(int index)

Parameters

Type	Name	Description
System.Int32	index	Index of the target string.

Returns

Type	Description
TextWithFormat	RTF string.

GetStringCount(Int32)

Returns number of strings in the dictionary.

Declaration

public int GetStringCount(int index)

Parameters

Type	Name	Description
System.Int32	index	Index of the target string.

Returns

Type
System.Int32

GetStringIndexes(String)

Searches for all strings with specified text.

Declaration

public Dictionary<int, object> GetStringIndexes(string value)

Parameters

Type	Name	Description
System.String	value	String to search.

Returns

Type	Description
System.Collections.Generic.Dictionary<System.Int32, System.Object>	Dictionary, key - string index, value - null.

Parse()

Here we have to parse our SST record

Declaration

public void Parse()

RemoveDecrease(Int32)

Remove reference of string. When reference count reaches zero, string will be removed from dictionary. Method can influence the SST indexes.

Declaration

public void RemoveDecrease(int iIndex)

Parameters

Type	Name	Description
System.Int32	iIndex	String index to remove.

RemoveDecrease(Object)

Remove reference of string. When reference count reaches zero, string will be removed from dictionary. Method can influence the SST indexes.

Declaration

public void RemoveDecrease(object key)

Parameters

Type	Name	Description
System.Object	key	String whose reference must be removed.

Exceptions

Type	Condition
System.ArgumentException	When SST table does not contain the specified string.

RemoveUnnecessaryStrings()

This methods looks through all row storages to find out used strings. And removes all unnecessary strings after that.

Declaration

public void RemoveUnnecessaryStrings()

Serialize(OffsetArrayList)

Serialize dictionary.

Declaration

public void Serialize(OffsetArrayList records)

Parameters

Type	Name	Description
OffsetArrayList	records	Records where writes serialized data.

StartWith(String)

Searches for all strings that starts with specified string.

Declaration

public List<int> StartWith(string strStart)

Parameters

Type	Name	Description
System.String	strStart	String prefix to search.

Returns

Type	Description
System.Collections.Generic.List<System.Int32>	List with all string indexes that starts with specified string, in ascending order.

UpdateRefCounts()

Updates internal array that stores reference count.

Declaration

public void UpdateRefCounts()

Implements

IParseable

System.IDisposable

Extension Methods

DateTimeExtension.ToDateTime(Object)