DataPointCollection Class

Definition

Represents a collection of DataPoint objects.

public ref class DataPointCollection : System::Web::UI::DataVisualization::Charting::ChartElementCollection<System::Web::UI::DataVisualization::Charting::DataPoint ^>
[System.Web.UI.Themeable(false)]
public class DataPointCollection : System.Web.UI.DataVisualization.Charting.ChartElementCollection<System.Web.UI.DataVisualization.Charting.DataPoint>
type DataPointCollection = class
    inherit ChartElementCollection<DataPoint>
Public Class DataPointCollection
Inherits ChartElementCollection(Of DataPoint)
Inheritance
Attributes

Remarks

The DataPointCollection class represents a collection of DataPoint objects, which in turn represent the data points that are part of a Series object.

This collection class is implemented as the Points property of a Series object.

DataPoint objects can be appended or inserted into the collection with their X-value and Y-value(s) already specified as parameters. Note that they are also added automatically when a series is bound to a data source using either the DataBindY or DataBindXY method.

Data points are plotted in the order that they occur in this collection only if the series that the collection belongs to has its IsXValueIndexed property set to true (the default value is false), or if all X-values for all data points are zero. Otherwise data points are plotted using their X-values.

Data points can be located, and manipulated, based on maximum, minimum or specified X or Y-values using the overloaded FindMaxValue, FindMinValue or FindValue methods, respectively.

The DataPointCollection.Count property indicates the total number of items in the collection and is commonly used to find the upper bound of the collection.

Properties

Count

Gets the number of elements actually contained in the Collection<T>.

(Inherited from Collection<T>)
Item[Int32]

Gets or sets the element at the specified index.

(Inherited from Collection<T>)
Items

Gets a IList<T> wrapper around the Collection<T>.

(Inherited from Collection<T>)

Methods

Add(Double[])

Adds a new DataPoint object to the collection and sets its Y value.

Add(T)

Adds an object to the end of the Collection<T>.

(Inherited from Collection<T>)
AddXY(Double, Double)

Adds a DataPoint object to the end of the collection, with the specified X-value and Y-value.

AddXY(Object, Object[])

Adds a DataPoint object to the end of the collection, with the specified X-value and Y-value(s).

AddY(Double)

Adds a DataPoint object to the end of the collection, with the specified Y-value.

AddY(Object[])

Adds a DataPoint object to the end of the collection, with the specified Y-value(s).

Clear()

Removes all elements from the Collection<T>.

(Inherited from Collection<T>)
ClearItems()

Removes all elements from the Collection<T>.

(Inherited from ChartElementCollection<T>)
Contains(T)

Determines whether an element is in the Collection<T>.

(Inherited from Collection<T>)
CopyTo(T[], Int32)

Copies the entire Collection<T> to a compatible one-dimensional Array, starting at the specified index of the target array.

(Inherited from Collection<T>)
DataBind(IEnumerable, String, String, String)

Data binds the X-value, Y-value(s) and property values of the data points, such as Tooltip or LabelStyle, to the data source.

DataBindXY(IEnumerable, IEnumerable[])

Data binds the X-value and Y-values of the collection's data points to the first columns of the specified data source.

DataBindXY(IEnumerable, String, IEnumerable, String)

Data binds the X-value and Y-values of the data points in the collection to the specified columns of the specified data sources.

DataBindY(IEnumerable, String)

Data binds the Y-value(s) of the data points to the specified column(s) of the specified data source.

DataBindY(IEnumerable[])

Data binds the Y-value(s) of the collection's data points to the first column of the specified data source(s).

Dispose()

Releases the resources used by the ChartElementCollection<T>.

(Inherited from ChartElementCollection<T>)
Dispose(Boolean)

Releases the unmanaged resources used by the ChartElementCollection<T> and optionally releases the managed resources.

(Inherited from ChartElementCollection<T>)
Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
FindAllByValue(Double)

Find all the data points that are equal to the specified value.

FindAllByValue(Double, String)

Finds all the data points that are equal to the specified value.

FindAllByValue(Double, String, Int32)

Finds all the data points that are equal to the specified value, starting from the specified index location.

FindByValue(Double)

Finds the first data point that is equal to the specified value.

FindByValue(Double, String)

Finds the first data point that is equal to the specified value.

FindByValue(Double, String, Int32)

Finds the first data point that is equal to the specified value, starting from the specified index location.

FindMaxByValue()

Finds the data point with the maximum value.

FindMaxByValue(String)

Finds the data point value with the maximum value.

FindMaxByValue(String, Int32)

Finds the data point with the maximum value, starting from the specified index location.

FindMinByValue()

Finds the data point with the minimum value.

FindMinByValue(String)

Finds the data point with the minimum value.

FindMinByValue(String, Int32)

Finds the data point with the minimum value, starting from the specified index location.

GetEnumerator()

Returns an enumerator that iterates through the Collection<T>.

(Inherited from Collection<T>)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
IndexOf(T)

Searches for the specified object and returns the zero-based index of the first occurrence within the entire Collection<T>.

(Inherited from Collection<T>)
Insert(Int32, T)

Inserts an element into the Collection<T> at the specified index.

(Inherited from Collection<T>)
InsertItem(Int32, T)

Inserts an element into the Collection<T> at the specified index location.

(Inherited from ChartElementCollection<T>)
InsertXY(Int32, Object, Object[])

Inserts a data point with the specified X value and one or more specified Y values.

InsertY(Int32, Object[])

Inserts a data point with one or more specified Y values.

Invalidate()

Forces the invalidation of the parent chart element.

(Inherited from ChartElementCollection<T>)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
Remove(T)

Removes the first occurrence of a specific object from the Collection<T>.

(Inherited from Collection<T>)
RemoveAt(Int32)

Removes the element at the specified index of the Collection<T>.

(Inherited from Collection<T>)
RemoveItem(Int32)

Removes the element at the specified index location of the Collection<T>.

(Inherited from ChartElementCollection<T>)
ResumeUpdates()

Resumes the invalidation of a chart element in the collection.

(Inherited from ChartElementCollection<T>)
SetItem(Int32, T)

Replaces the element at the specified index location.

(Inherited from ChartElementCollection<T>)
SuspendUpdates()

Suspends the invalidation of a chart element in the collection.

(Inherited from ChartElementCollection<T>)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

ICollection.CopyTo(Array, Int32)

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

(Inherited from Collection<T>)
ICollection.IsSynchronized

Gets a value indicating whether access to the ICollection is synchronized (thread safe).

(Inherited from Collection<T>)
ICollection.SyncRoot

Gets an object that can be used to synchronize access to the ICollection.

(Inherited from Collection<T>)
ICollection<T>.IsReadOnly

Gets a value indicating whether the ICollection<T> is read-only.

(Inherited from Collection<T>)
IEnumerable.GetEnumerator()

Returns an enumerator that iterates through a collection.

(Inherited from Collection<T>)
IList.Add(Object)

Adds an item to the IList.

(Inherited from Collection<T>)
IList.Contains(Object)

Determines whether the IList contains a specific value.

(Inherited from Collection<T>)
IList.IndexOf(Object)

Determines the index of a specific item in the IList.

(Inherited from Collection<T>)
IList.Insert(Int32, Object)

Inserts an item into the IList at the specified index.

(Inherited from Collection<T>)
IList.IsFixedSize

Gets a value indicating whether the IList has a fixed size.

(Inherited from Collection<T>)
IList.IsReadOnly

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

(Inherited from Collection<T>)
IList.Item[Int32]

Gets or sets the element at the specified index.

(Inherited from Collection<T>)
IList.Remove(Object)

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

(Inherited from Collection<T>)

Extension Methods

CopyToDataTable<T>(IEnumerable<T>)

Returns a DataTable that contains copies of the DataRow objects, given an input IEnumerable<T> object where the generic parameter T is DataRow.

CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption)

Copies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter T is DataRow.

CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler)

Copies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter T is DataRow.

Cast<TResult>(IEnumerable)

Casts the elements of an IEnumerable to the specified type.

OfType<TResult>(IEnumerable)

Filters the elements of an IEnumerable based on a specified type.

AsParallel(IEnumerable)

Enables parallelization of a query.

AsQueryable(IEnumerable)

Converts an IEnumerable to an IQueryable.

Ancestors<T>(IEnumerable<T>)

Returns a collection of elements that contains the ancestors of every node in the source collection.

Ancestors<T>(IEnumerable<T>, XName)

Returns a filtered collection of elements that contains the ancestors of every node in the source collection. Only elements that have a matching XName are included in the collection.

DescendantNodes<T>(IEnumerable<T>)

Returns a collection of the descendant nodes of every document and element in the source collection.

Descendants<T>(IEnumerable<T>)

Returns a collection of elements that contains the descendant elements of every element and document in the source collection.

Descendants<T>(IEnumerable<T>, XName)

Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

Elements<T>(IEnumerable<T>)

Returns a collection of the child elements of every element and document in the source collection.

Elements<T>(IEnumerable<T>, XName)

Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

InDocumentOrder<T>(IEnumerable<T>)

Returns a collection of nodes that contains all nodes in the source collection, sorted in document order.

Nodes<T>(IEnumerable<T>)

Returns a collection of the child nodes of every document and element in the source collection.

Remove<T>(IEnumerable<T>)

Removes every node in the source collection from its parent node.

Applies to