Class RecordsListBase

The class that maintains the collection of records as a list, by implementing the methods declared in the IRecordEntryList.

Inheritance

System.Object

RecordsListBase

RecordsEntryList

RecordsList

Implements

IRecordsEntryList

System.Collections.Generic.IList<RecordEntry>

System.Collections.Generic.ICollection<RecordEntry>

System.Collections.Generic.IEnumerable<RecordEntry>

System.Collections.IEnumerable

System.Collections.Specialized.INotifyCollectionChanged

System.IDisposable

Namespace: Syncfusion.Maui.Data

Assembly: Syncfusion.Maui.Data.dll

Syntax

public class RecordsListBase : Object, IRecordsEntryList, IList<RecordEntry>, ICollection<RecordEntry>, IEnumerable<RecordEntry>, IEnumerable, INotifyCollectionChanged, IDisposable

Constructors

RecordsListBase()

Initializes a new instance of the RecordsListBase class.

Declaration

public RecordsListBase()

Fields

indicesList

Gets the collection of records in the collection view in the ListIndexer<T>

Declaration

protected ListIndexer<RecordEntry> indicesList

Field Value

Type
ListIndexer<RecordEntry>

internalList

Gets the collection of records in the collection view.

Declaration

protected ObservableCollection<RecordEntry> internalList

Field Value

Type
System.Collections.ObjectModel.ObservableCollection<RecordEntry>

Properties

Count

Gets the number of elements contained in the System.Collections.Generic.ICollection<>.

Declaration

public virtual int Count { get; }

Property Value

Type	Description
System.Int32	The number of elements contained in the System.Collections.Generic.ICollection<>.

IsInSuspend

Gets a boolean value indicating whether the view updates is suspended.

Declaration

public virtual bool IsInSuspend { get; }

Property Value

Type	Description
System.Boolean	A boolean value indicating whether the view updates is suspended.

IsReadOnly

Gets a value indicating whether the System.Collections.Generic.ICollection<> is read-only.

Declaration

public virtual bool IsReadOnly { get; }

Property Value

Type	Description
System.Boolean	True if the System.Collections.Generic.ICollection<> is read-only; otherwise, false.

Item[Int32]

Gets the record entry object for the data in the given index.

Declaration

public virtual RecordEntry this[int index] { get; set; }

Parameters

Type	Name	Description
System.Int32	index	The index at which the record entry is to be obtained.

Property Value

Type	Description
RecordEntry	The record entry object for the data in the given index.

Methods

Add(RecordEntry)

Adds an item to the System.Collections.Generic.ICollection<>.

Declaration

public virtual void Add(RecordEntry item)

Parameters

Type	Name	Description
RecordEntry	item	The object to add to the System.Collections.Generic.ICollection<>.

Exceptions

Type	Condition
System.NotSupportedException	The System.Collections.Generic.ICollection<> is read-only.

Add(Object)

Adds the specified data to the record collection.

Declaration

public virtual void Add(object item)

Parameters

Type	Name	Description
System.Object	item	The data to be added to the record collection.

Clear()

Clears all the items in the record collection.

Declaration

public virtual void Clear()

Contains(RecordEntry)

Determines whether the System.Collections.Generic.ICollection<> contains the given item.

Declaration

public virtual bool Contains(RecordEntry item)

Parameters

Type	Name	Description
RecordEntry	item	The object to locate in the System.Collections.Generic.ICollection<>.

Returns

Type	Description
System.Boolean	True if item is found in the System.Collections.Generic.ICollection<>, otherwise false.

CopyTo(RecordEntry[], Int32)

Copies the elements of the System.Collections.Generic.ICollection<> to an System.Array, starting at a particular System.Array index.

Declaration

public virtual void CopyTo(RecordEntry[] array, int arrayIndex)

Parameters

Type	Name	Description
RecordEntry[]	array	The one-dimensional System.Array that is the destination of the elements copied from System.Collections.Generic.ICollection<>. The System.Array must have zero-based indexing.
System.Int32	arrayIndex	The zero-based index in array at which copying begins.

Exceptions

Type	Condition
System.ArgumentNullException	array is null.
System.ArgumentOutOfRangeException	arrayIndex is less than 0.
System.ArgumentException	array is multidimensional. -or- arrayIndex is equal to or greater than the length of array. -or- The number of elements in the source System.Collections.Generic.ICollection<> is greater than the available space from arrayIndex to the end of the destination array.

Dispose()

Disposes all the resources used by the RecordsListBase class.

Declaration

public void Dispose()

Dispose(Boolean)

Releases the unmanaged and optionally releases the managed resources used by the RecordsListBase class.

Declaration

protected virtual void Dispose(bool isDisposing)

Parameters

Type	Name	Description
System.Boolean	isDisposing	A boolean value indicating whether to release both managed and unmanaged resources.

GetEnumerator()

Returns an enumerator that iterates through the collection.

Declaration

public virtual IEnumerator<RecordEntry> GetEnumerator()

Returns

Type	Description
System.Collections.Generic.IEnumerator<RecordEntry>	A System.Collections.Generic.IEnumerator<> that can be used to iterate through the collection.

GetRecord(Int32)

Returns the object of RecordEntry for the specified record index.

Declaration

public virtual RecordEntry GetRecord(int index)

Parameters

Type	Name	Description
System.Int32	index	The index of the record whose record entry instance is to be obtained.

Returns

Type	Description
RecordEntry	Returns the object of RecordEntry for the specified record index.

GetRecord(Object)

Returns the object of RecordEntry for the specified data in the underlying collection.

Declaration

public virtual RecordEntry GetRecord(object data)

Parameters

Type	Name	Description
System.Object	data	The data whose record entry is to be obtained.

Returns

Type	Description
RecordEntry	Returns the object of RecordEntry for the specified data in the underlying collection.

GetRecordEntry(Int32, Object)

Returns the object of RecordEntry for the specified record index and data in the underlying collection.

Declaration

public virtual RecordEntry GetRecordEntry(int recordIndex, object data = null)

Parameters

Type	Name	Description
System.Int32	recordIndex	The index of the record whose record entry instance is to be obtained.
System.Object	data	The data whose record entry is to be obtained.

Returns

Type	Description
RecordEntry	Returns the object of RecordEntry for the specified record index and data in the underlying collection.

GetSource()

Returns the source of the record entry collection.

Declaration

public virtual List<object> GetSource()

Returns

Type	Description
System.Collections.Generic.List<System.Object>	Returns the source of the record entry collection.

IndexOf(RecordEntry)

Returns the index of the given record entry in the underlying collection.

Declaration

public virtual int IndexOf(RecordEntry item)

Parameters

Type	Name	Description
RecordEntry	item	The record entry whose index is to be obtained.

Returns

Type	Description
System.Int32	Returns the index of the given record entry in the underlying collection.

IndexOfRecord(Object)

Returns the index of the given data in the underlying collection.

Declaration

public virtual int IndexOfRecord(object data)

Parameters

Type	Name	Description
System.Object	data	The data whose index is to be obtained.

Returns

Type	Description
System.Int32	Returns the index of the given data in the underlying collection.

Insert(Int32, RecordEntry)

Inserts an item to the System.Collections.Generic.IList<> at the specified index.

Declaration

public virtual void Insert(int index, RecordEntry item)

Parameters

Type	Name	Description
System.Int32	index	The zero-based index at which item should be inserted.
RecordEntry	item	The object to insert into the System.Collections.Generic.IList<>.

Exceptions

Type	Condition
System.ArgumentOutOfRangeException	index is not a valid index in the System.Collections.Generic.IList<>.
System.NotSupportedException	The System.Collections.Generic.IList<> is read-only.

OnCollectionChanged(Object, NotifyCollectionChangedEventArgs)

This method fires when the underlying collection is changed.

Declaration

protected virtual void OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)

Parameters

Type	Name	Description
System.Object	sender	The sender of the event.
System.Collections.Specialized.NotifyCollectionChangedEventArgs	e	The System.Collections.Specialized.NotifyCollectionChangedEventArgs that contains the data for the event.

OnInitialize()

Initialize the internalList and indicesList collection.

Declaration

protected virtual void OnInitialize()

Remarks

The indicesList will not be initialized in VirtualRecordsList

Remove(RecordEntry)

Removes the first occurrence of a specific object from the System.Collections.Generic.ICollection<>.

Declaration

public virtual bool Remove(RecordEntry item)

Parameters

Type	Name	Description
RecordEntry	item	The object to remove from the System.Collections.Generic.ICollection<>.

Returns

Type	Description
System.Boolean	true if item was successfully removed from the System.Collections.Generic.ICollection<>; otherwise, false. This method also returns false if item is not found in the original System.Collections.Generic.ICollection<>.

Exceptions

Type	Condition
System.NotSupportedException	The System.Collections.Generic.ICollection<> is read-only.

RemoveAt(Int32)

Removes the System.Collections.Generic.IList<> item at the specified index.

Declaration

public virtual void RemoveAt(int index)

Parameters

Type	Name	Description
System.Int32	index	The zero-based index of the item to remove.

Exceptions

Type	Condition
System.ArgumentOutOfRangeException	index is not a valid index in the System.Collections.Generic.IList<>.
System.NotSupportedException	The System.Collections.Generic.IList<> is read-only.

ResumeUpdates()

Resumes the view updates. When the view is resumed, the view will be refreshed by which the change in the underlying data will be updated in the view.

Declaration

public virtual void ResumeUpdates()

SuspendUpdates()

Suspends the view updates. When the view is suspended, the change in the underlying data will not be updated in the view.

Declaration

public virtual void SuspendUpdates()

Events

CollectionChanged

Occurs when the underlying collection is changed.

Declaration

public virtual event NotifyCollectionChangedEventHandler CollectionChanged

Event Type

Type
System.Collections.Specialized.NotifyCollectionChangedEventHandler

Implements

IRecordsEntryList

System.Collections.Generic.IList<>

System.Collections.Generic.ICollection<>

System.Collections.Generic.IEnumerable<>

System.Collections.IEnumerable

System.Collections.Specialized.INotifyCollectionChanged

System.IDisposable