Class GridRecordWithValueCache

Record that shadows values in table and can gives hints which values were changed in ListChanged event. The new GetOldValue method also gives access to the previous value before a change and can be used for calculating the difference between two values.

Inheritance
System.Object
Element
Record
GridRecord
GridRecordWithValueCache
Implements
System.IDisposable
System.IComparable
System.ICloneable
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Syncfusion.Windows.Forms.Grid.Grouping
Assembly: Syncfusion.Grid.Grouping.Windows.dll
Syntax
public class GridRecordWithValueCache : GridRecord, IDisposable, IDisposedEvent, IIsDisposedProperty, ITreeTableCounterSource, ITreeTableSummaryArraySource, IContainerElement, IElementTreeTableSource, IElement, IComparable, ICloneable, IGridTableCellAppearanceSource, IGridTableCellStyleChanged

Constructors

GridRecordWithValueCache(Table)

Initializes a new instance of the GridRecordWithValueCache class.

Declaration
public GridRecordWithValueCache(Table parentTable)
Parameters
Type Name Description
Table parentTable

The parent table.

Methods

CompareAndUpdateValues()

Returns an ArrayList with ChangedFieldInfo objects and updates the values in the record with changes found in underlying datasource. Only fields with a PropertyDescriptor are updated, others (unbound, expression fields) are ignored.

Declaration
public override ChangedFieldInfoCollection CompareAndUpdateValues()
Returns
Type Description
ChangedFieldInfoCollection

An ArrayList with ChangedFieldInfo objects.
Overrides

EnsureValues()

Ensures that record values are cached.

Declaration
public override void EnsureValues()
Overrides

GetOldValue(Int32)

Returns the old value for a record.

Declaration
public override object GetOldValue(int fieldIndex)
Parameters
Type Name Description
System.Int32 fieldIndex

The index of the field whose value is required.
Returns
Type Description
System.Object

Old value of the record.
Overrides

GetValue(FieldDescriptor)

Returns the value for a record.

Declaration
public override object GetValue(FieldDescriptor fieldDescriptor)
Parameters
Type Name Description
FieldDescriptor fieldDescriptor

The field descriptor.
Returns
Type Description
System.Object

Record value.
Overrides

ResetValues()

Resets the record values.

Declaration
public override void ResetValues()
Overrides

UpdateValues(IEnumerable)

Enumerates through values in the collection of ChangedFieldInfo objects and updates the old and new values in this record.

Declaration
public override void UpdateValues(IEnumerable changedFields)
Parameters
Type Name Description
System.Collections.IEnumerable changedFields

The changed fields.
Overrides

Implements

System.IDisposable
System.IComparable
System.ICloneable