Class CellSpanInfoCollection<T>

A collection with elements derived from type CellSpanInfoBase. Internally this collection maintains both a List of CellSpanInfoBase and a so called pool. The pool allows immediate lookup of cell spans given a cells row and column index. The list allows looping through cell spans in the order they were added. CellSpanInfoCollection assumes that there is no overlap between cell spans. For any given cell there only at most one cell span must exist. CellSpanInfoCollection is a base class for the grids GridCoveredCellInfoCollection.

Inheritance

System.Object

CellSpanInfoCollection<T>

CoveredCellInfoCollection

Implements

System.Collections.Generic.IList<T>

System.Collections.Generic.ICollection<T>

System.Collections.Generic.IEnumerable<T>

System.Collections.IEnumerable

ISupportInitialize

Namespace: Syncfusion.UI.Xaml.CellGrid

Assembly: Syncfusion.SfCellGrid.UWP.dll

Syntax

public class CellSpanInfoCollection<T> : Object, IList<T>, ICollection<T>, IEnumerable<T>, IEnumerable, ISupportInitialize where T : CellSpanInfoBase

Type Parameters

Name	Description
T	The element type of this collection.

Constructors

CellSpanInfoCollection()

Declaration

public CellSpanInfoCollection()

Properties

Count

Gets the number of elements contained in the collection.

Declaration

public int Count { get; }

Property Value

Type	Description
System.Int32

IsEmpty

Gets a value indicating whether this collection is empty.

Declaration

public virtual bool IsEmpty { get; }

Property Value

Type	Description
System.Boolean	true if this collection is empty; otherwise, false.

IsReadOnly

Gets a value indicating whether the collection is read-only.

Declaration

public bool IsReadOnly { get; }

Property Value

Type	Description
System.Boolean

Item[Int32]

Gets or sets the cell span at the specified index.

Declaration

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

Parameters

Type	Name	Description
System.Int32	index

Property Value

Type	Description
T

Methods

Add(T)

Adds an item to the collection. An exception is thrown if the cell range overlaps with another cell span in the collection.

Declaration

public void Add(T item)

Parameters

Type	Name	Description
T	item	The object to add to the collection.

Exceptions

Type	Condition
System.ArgumentNullException	The item is null.

Added(T)

Declaration

protected virtual void Added(T item)

Parameters

Type	Name	Description
T	item

BeginInit()

Signals the object that initialization is starting.

Declaration

public void BeginInit()

CheckExistCellSpan(CellSpanInfoBase)

Checks if the cell span exists.

Declaration

public bool CheckExistCellSpan(CellSpanInfoBase span)

Parameters

Type	Name	Description
CellSpanInfoBase	span	The cell span.

Returns

Type	Description
System.Boolean

Clear()

Removes all items from the collection.

Declaration

public virtual void Clear()

CollectionModified(List<T>)

Declaration

protected virtual void CollectionModified(List<T> spanCollection)

Parameters

Type	Name	Description
System.Collections.Generic.List<T>	spanCollection

Contains(T)

Determines whether the collection contains a specific value.

Declaration

public bool Contains(T item)

Parameters

Type	Name	Description
T	item	The object to locate in the collection.

Returns

Type	Description
System.Boolean	true if item is found in the collection; otherwise, false.

CopyTo(T[], Int32)

Copies the elements of the collection to an System.Array, starting at a particular System.Array index.

Declaration

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

Parameters

Type	Name	Description
T[]	array	The one-dimensional System.Array that is the destination of the elements copied from collection. 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 collection is greater than the available space from arrayIndex to the end of the destination array cannot be cast automatically to the type of the destination array.

EndInit()

Signals the object that initialization is complete.

Declaration

public void EndInit()

GetEnumerator()

Returns an enumerator that iterates through the collection.

Declaration

public IEnumerator<T> GetEnumerator()

Returns

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

IndexOf(T)

Determines the index of a specific item in the collection.

Declaration

public int IndexOf(T item)

Parameters

Type	Name	Description
T	item	The object to locate in the collection.

Returns

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

Insert(Int32, T)

Inserts an item to the collection at the specified index. An exception is thrown if the cell range overlaps with another cell span in the collection.

Declaration

public virtual void Insert(int index, T item)

Parameters

Type	Name	Description
System.Int32	index	The zero-based index at which item should be inserted.
T	item	The object to insert into the collection.

Exceptions

Type	Condition
System.ArgumentOutOfRangeException	index is not a valid index in the collection.
System.ArgumentNullException	The item is null.

OnGetCellSpan(Int32, Int32, out T)

This virtual method is called form Syncfusion.UI.Xaml.CellGrid.CellSpanInfoCollection`1.GetCellSpan(System.Int32,System.Int32). Override this method to return a custom cell span that include the specified cells row and column index. In such case you should also return true.

Declaration

protected virtual bool OnGetCellSpan(int rowIndex, int columnIndex, out T result)

Parameters

Type	Name	Description
System.Int32	rowIndex	Index of the row.
System.Int32	columnIndex	Index of the column.
T	result	The result cell span.

Returns

Type	Description
System.Boolean

Remove(T)

Removes the first occurrence of a specific object from the collection.

Declaration

public bool Remove(T item)

Parameters

Type	Name	Description
T	item	The object to remove from the collection.

Returns

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

RemoveAt(Int32)

Removes the collection item at the specified index.

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 collection.
System.NotSupportedException	The collection is read-only.

Removed(T)

Declaration

protected virtual void Removed(T item)

Parameters

Type	Name	Description
T	item

Implements

System.Collections.Generic.IList<>

System.Collections.Generic.ICollection<>

System.Collections.Generic.IEnumerable<>

System.Collections.IEnumerable

ISupportInitialize

Extension Methods

DateTimeExtension.ToDateTime(Object)