NevronOpenVision
Nevron.Nov.Data Namespace / NDataSource Class
Fields Properties Methods Events


In This Topic
    NDataSource Class Members
    In This Topic

    The following tables list the members exposed by NDataSource.

    Public Constructors
     NameDescription
    Public ConstructorOverloaded.   
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    Public Fields
    Public Properties
     NameDescription
    Public PropertyDetermines whether the data source supports the AddField operation  
    Public PropertyDetermines whether the data source supports the AddRow operation  
    Public PropertyDetermines whether the data source supports the InsertField operation  
    Public PropertyDetermines whether the data source supports the InsertRow operation  
    Public PropertyDetermines whether the data source supports the RemoveField operation  
    Public PropertyDetermines whether the data source supports the RemoveRow operation  
    Public PropertyDetermines whether the data source supports the RenameField operation  
    Public PropertyGets the data provider associated with this data source.  
    Public PropertyGets the count of fields in the data source  
    Public PropertyOverloaded. Gets or sets the value for the specified row field.  
    Public PropertyGets or sets the data source name. The data source name is internally bound to the name of the underlying data provider.  
    Public PropertyGets the count of rows in the data source  
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    Public Methods
     NameDescription
    Public MethodAdds a new field, if CanAddField is true  
    Public MethodOverloaded. Adds a row to the data table with default field values, if CanAddRow is true.  
    Public MethodBegins a batch data change. During such a change the data table will not notify observers about changes. The call to the BeginDataChange() method, must always be paired with an EndDataChange() call.  
    Public MethodOverloaded. Creates an formula field name, with which you can reference the field in formulas.  
    Public MethodDrops all indexes  
    Public MethodDrops the specified field index  
    Public MethodEnds a batch data change, previously started by a call to BeginDataChange(). If any changes were made to the data table during the batch data change, the provider will notify the observers for a DataChange. The call to the EndDataChange() method, must always be paired with an BeginDataChange() call.  
    Public MethodOverloaded. Runs the filter on the entire data source and returns the recordset with the matching records  
    Public MethodGets the field index of the field with the specified name  
    Public MethodOverloaded. Gets information about the field at the specified index  
    Public MethodGets the index on the specified field. Returns null if an index was not created.  
    Public MethodGets an existing index or creates such for the specified field index.  
    Public MethodGets the row at the specified index.  
    Public MethodOverloaded. Gets the value for a given [row:field]  
    Public MethodInserts a new field at the specified index, if CanInsertField is true  
    Public MethodOverloaded. Inserts a new row with column default, at the specified index, if CanInsertRow is true  
    Public MethodRemoves all rows from the data table. if CanRemoveRow is true.  
    Public MethodRemoves a field at the specified index, if CanRemoveField is true  
    Public MethodRemoves a row at the specified index, if CanRemoveRow is true  
    Public MethodSets a new name to the field at the specified index, if CanRenameField is true.  
    Public MethodOverloaded. Sets a value at the specified index  
    Public MethodOverloaded. Tries to get the maximum value for the specified field. Returns false if the data table has no records, or the field type is not comparable.  
    Public MethodOverloaded. Tries to get the minimum value for the specified field. Returns false if the data table has no records, or the field type is not comparable.  
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    Protected Methods
     NameDescription
    Internal Method  
    Protected MethodCalled when multiple rows have been inserted, removed or their values have changed.  
    Protected MethodCalled when the DataTable property has changed.  
    Protected MethodCalled when a field has been inserted at the specified index. Raises the FieldInserted event  
    Protected MethodCalled when a field has been removed at the specified index. Raises the FieldRemoved event  
    Protected MethodCalled when a field has been renamed at the specified index. Raises the FieldRenamed event  
    Protected MethodCalled when the name of the data source has changed.  
    Protected MethodCalled when a row has been inserted at the specified index. Raises the RowInserted event  
    Protected MethodCalled when a row has been removed at the specified index. Raises the RowRemoved event  
    Protected MethodCalled when the value at the specified row/field position has changed. Raises the ValueChanged event  
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    Public Events
     NameDescription
    Public EventOccurs when multiple rows have been inserted or removed or when multiple cell values have changed.  
    Public EventOccurs when a field has been inserted in the data source.  
    Public EventOccurs when a field has been removed from the data source.  
    Public EventOccurs when the name of a field in the data source has changed.  
    Public EventOccurs when the name of the data source has changed.  
    Public EventOccurs when a row has been inserted in the data source.  
    Public EventOccurs when a row has been removed from the data source.  
    Public EventOccurs when a [row;field] cell value has changed.  
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    See Also