Class GroupDisplayElements

Represents a class which contains the information of the group and its records.

Inheritance

System.Object

GroupDisplayElements

Implements

System.IDisposable

System.Collections.Generic.IList<NodeEntry>

System.Collections.Generic.ICollection<NodeEntry>

System.Collections.Generic.IEnumerable<NodeEntry>

System.Collections.IEnumerable

Namespace: Syncfusion.Maui.Data

Assembly: Syncfusion.Maui.Data.dll

Syntax

public class GroupDisplayElements : Object, IDisposable, IList<NodeEntry>, ICollection<NodeEntry>, IEnumerable<NodeEntry>, IEnumerable

Constructors

GroupDisplayElements(TopLevelGroup)

Initializes a new instance of the GroupDisplayElements class.

Declaration

public GroupDisplayElements(TopLevelGroup group)

Parameters

Type	Name	Description
TopLevelGroup	group	The corresponding group whose display elements are initialized.

Properties

Count

Gets the total number of display elements contained in the top-level group.

Declaration

public int Count { get; }

Property Value

Type	Description
System.Int32	The total number of display elements contained in the top-level group.

IsReadOnly

Gets a boolean value indicating whether the list of node entry in the top-level group is read-only.

Declaration

public bool IsReadOnly { get; }

Property Value

Type	Description
System.Boolean	True if the list of node entry in the top-level group is read-only, otherwise false.

Item[Int32]

Gets or sets the NodeEntry at the specified index.

Declaration

public NodeEntry this[int index] { get; set; }

Parameters

Type	Name	Description
System.Int32	index

Property Value

Type	Description
NodeEntry	The NodeEntry at the specified index.

TopLevelGroup

Gets the top-level group of the current group's display elements.

Declaration

public TopLevelGroup TopLevelGroup { get; }

Property Value

Type	Description
TopLevelGroup	The top-level group of the current group's display elements.

Methods

Add(NodeEntry)

Adds the given item to the list of node entry in the top-level group.

Declaration

public void Add(NodeEntry item)

Parameters

Type	Name	Description
NodeEntry	item	The item to be added.

Add(NodeEntry, Boolean)

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

Declaration

public void Add(NodeEntry item, bool isInSourceCollectionChange)

Parameters

Type	Name	Description
NodeEntry	item	The object to add to the System.Collections.Generic.ICollection<>.
System.Boolean	isInSourceCollectionChange	A boolean value indicating whether the source collection change is currently in progress.

Exceptions

Type	Condition
System.NotSupportedException	The System.Collections.Generic.ICollection<> is read-only.
System.InvalidOperationException	Item has to be of type RecordEntry

Clear()

Clears all the items in the group.

Declaration

public void Clear()

Contains(NodeEntry)

Determines whether the specific item is found in the list of items in the group.

Declaration

public bool Contains(NodeEntry item)

Parameters

Type	Name	Description
NodeEntry	item	The object to locate in the list of items in the group.

Returns

Type	Description
System.Boolean	True if `item` is found in the list of items in the group, otherwise false.

CopyTo(NodeEntry[], Int32)

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

Declaration

public void CopyTo(NodeEntry[] array, int arrayIndex)

Parameters

Type	Name	Description
NodeEntry[]	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()

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

Declaration

public void Dispose()

Dispose(Boolean)

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

Declaration

protected virtual void Dispose(bool isDisposing)

Parameters

Type	Name	Description
System.Boolean	isDisposing	Indicates whether the call is from dispose method or from a finalizer.

GetEnumerator()

Returns an enumerator that iterates through the collection of items in the group.

Declaration

public IEnumerator<NodeEntry> GetEnumerator()

Returns

Type	Description
System.Collections.Generic.IEnumerator<NodeEntry>	A System.Collections.Generic.IEnumerator<> that can be used to iterate through the collection of items in the group.

GetItem(Object)

Gets the corresponding node entry of the given item.

Declaration

public NodeEntry GetItem(object item)

Parameters

Type	Name	Description
System.Object	item	The item whose node entry is to be obtained.

Returns

Type	Description
NodeEntry	Returns the corresponding node entry of the given item.

GetItemAt(Int32)

Gets the node entry of the item at the given index.

Declaration

protected virtual NodeEntry GetItemAt(int index)

Parameters

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

Returns

Type	Description
NodeEntry	The item at the given index.

IndexOf(NodeEntry)

Determines the index of a specific item in the list of items in view of the top-level group.

Declaration

public int IndexOf(NodeEntry item)

Parameters

Type	Name	Description
NodeEntry	item	The object to locate in the list of items in view of the top-level group.

Returns

Type	Description
System.Int32	The index of `item` if found in the list; otherwise, -1.

IndexOf(Object)

Gets the index of given item in the list of items in the top-level group.

Declaration

public int IndexOf(object item)

Parameters

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

Returns

Type	Description
System.Int32	Returns the index of given item in the top-level group.

Insert(Int32, NodeEntry)

Inserts the given item at the specified index to the list of items in the group.

Declaration

public void Insert(int index, NodeEntry item)

Parameters

Type	Name	Description
System.Int32	index	The zero-based index at which `item` should be inserted.
NodeEntry	item	The object to be inserted.

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.

InsertRecord(NodeEntry, Int32, Boolean)

Inserts the given item at the specified index in the group.

Declaration

public void InsertRecord(NodeEntry item, int index, bool isInSourceCollectionChange)

Parameters

Type	Name	Description
NodeEntry	item	The item to be inserted.
System.Int32	index	The index at which the item is to be inserted.
System.Boolean	isInSourceCollectionChange	A boolean value indicating whether the source collection change is currently in progress.

IsEntryInView(NodeEntry)

Gets or sets a boolean value indicating whether the given node entry is in view.

Declaration

public bool IsEntryInView(NodeEntry entry)

Parameters

Type	Name	Description
NodeEntry	entry	The node entry which is to be queried in the view.

Returns

Type	Description
System.Boolean	A boolean value indicating whether the given node entry is in view.

Remove(NodeEntry)

Removes the first occurrence of a specific object from the list of items in the group.

Declaration

public bool Remove(NodeEntry item)

Parameters

Type	Name	Description
NodeEntry	item	The object to be removed.

Returns

Type	Description
System.Boolean	True if `item` was successfully removed from the list, otherwise false. This method also returns false if `item` is not found in the list of items.

Exceptions

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

RemoveAt(Int32)

Removes the corresponding item at the specified index from the list of items in the group.

Declaration

public 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.

RemoveNode(NodeEntry, Boolean)

Removes the first occurrence of a specific object from the list of items in the group.

Declaration

public int RemoveNode(NodeEntry item, bool isInSourceCollectionChange)

Parameters

Type	Name	Description
NodeEntry	item	The object to be removed.
System.Boolean	isInSourceCollectionChange	A boolean value indicating whether the source collection change is currently in progress.

Returns

Type	Description
System.Int32	Gets the index at which the item is removed.

Implements

System.IDisposable

System.Collections.Generic.IList<>

System.Collections.Generic.ICollection<>

System.Collections.Generic.IEnumerable<>

System.Collections.IEnumerable