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Docs > API Reference > DevExpress.Data > VirtualSourceBase > Members
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V21.2
Windows 10 App Controls
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VirtualSourceBase Members

In This Article
Properties
Methods
Events
Serves as a base class for virtual sources.

#Properties

Name Description
AreRowsFetching Gets whether the data source is currently fetching rows.
Count Returns the number of currently loaded data records.
CustomProperties Gets or sets custom descriptors.
ElementType Gets or sets the type of objects retrieved from a data source.
FetchRowsException Gets an exception that occurred while fetching rows.
IsRowUpdating For internal use.
SummaryInProgressText Gets or sets the text that is shown when the summary is calculating.

#Methods
Show Inherited Hide Inherited

Name Description
Dispose() Disposes of the source.
Equals(Object, Object) static Determines whether the specified object instances are considered equal. Inherited from Object.
Equals(Object) Determines whether the specified object is equal to the current object. Inherited from Object.
GetHashCode() Serves as the default hash function. Inherited from Object.
GetPropertyName<T>(Expression<Func<T>>) static Returns the name of a property identified by a lambda expression. Inherited from BindableBase.
GetType() Gets the Type of the current instance. Inherited from Object.
MemberwiseClone() protected Creates a shallow copy of the current Object. Inherited from Object.
ReferenceEquals(Object, Object) static Determines whether the specified Object instances are the same instance. Inherited from Object.
RefreshRows() Clears all rows and starts loading from scratch.
ToString() Returns a string that represents the current object. Inherited from Object.
UpdateSummaries() Forces summaries recalculation.

#Events
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Name Description
PropertyChanged Occurs when a property value changes. Inherited from BindableBase.
See Also