Class GridChildTable

A ChildTable is either a TopLevelGroup or a group that can be referenced as a nested table from a record in a parent table. ChildTable groups are created for every new key found based on RelationKeys.

You can get access to a ChildTable through the ChildTable property of a NestedTable in a record.

Inheritance
System.Object
Element
Group
ChildTable
GridChildTable
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 GridChildTable : ChildTable, IDisposable, IDisposedEvent, IIsDisposedProperty, ITreeTableCounterSource, ITreeTableSummaryArraySource, IContainerElement, IElementTreeTableSource, IElement, IGridTableCellAppearanceSource, IGridGroupOptionsSource
Remarks

A ChildTable defines a group of records that belong to a category specified with RelationKeys. ChildTables are created just like regular groups when the records of the table are categorized or when a new record is inserted. The collection in the TableDescriptor that defines categorization is the RelationChildColumns collection. RelationChildColumns will be added when there is a parent-child relation between two tables. The child table of such a relation must be sorted by the columns that are used to identify a record. These columns match the foreign key columns of the parent table. For every new category key with regards to RelationChildColumns, a ChildTable is created. The ChildTable class is derived from Group.

A child table can either be a final node with records or it can be a node with nested groups. If a group has records, its Groups collection will be empty and the Records collection will contain all records. If a group has nested groups, its Groups collection will have the nested groups and the Records collection will be empty.

A child table can be expanded and collapsed with its IsExpanded property. Expansion of child tables will show or hide nested elements of the group within the DisplayElements and NestedDisplayElements collection.

A Table has at least one child table. The TopLevelGroup is a ChildTable which is derived from Group.

Constructors

GridChildTable(Element)

Initializes a new instance of the GridChildTable class.

Declaration
public GridChildTable(Element parent)
Parameters
Type Name Description
Element parent

The parent element this object belongs to.

Properties

Appearance

Gets or sets The default GridTableCellAppearance with GridTableCellStyleInfo information for cells of this element.

Declaration
public GridTableCellAppearance Appearance { get; set; }
Property Value
Type Description
GridTableCellAppearance

CurrentCell

The current cell for this child table.

Declaration
public GridCurrentCell CurrentCell { get; set; }
Property Value
Type Description
GridCurrentCell

Engine

Gets the engine this element belongs to.

Declaration
public GridEngine Engine { get; }
Property Value
Type Description
GridEngine

EngineTable

Gets the GridTable of the engine this element belongs to.

Declaration
public GridTable EngineTable { get; }
Property Value
Type Description
GridTable

GroupOptions

Gets or sets the look of inner groups such as whether the Caption Row is visible or what CaptionText is.

Declaration
public GridGroupOptionsStyleInfo GroupOptions { get; set; }
Property Value
Type Description
GridGroupOptionsStyleInfo

HasGroupOptions

Gets the value of the GroupOptions if it has specified.

Declaration
public bool HasGroupOptions { get; }
Property Value
Type Description
System.Boolean

IsCollapsible

Indicates whether this element can be collapsed.

Declaration
public override bool IsCollapsible { get; }
Property Value
Type Description
System.Boolean
Overrides

ParentChildTable

Gets a reference to the child table this element belongs.

Declaration
public GridChildTable ParentChildTable { get; }
Property Value
Type Description
GridChildTable

ParentRecord

Gets a reference to the parent record this element belongs to.

Declaration
public GridRecord ParentRecord { get; }
Property Value
Type Description
GridRecord

ParentTable

Gets or sets a reference to the parent table this section belongs to.

Declaration
public GridTable ParentTable { get; set; }
Property Value
Type Description
GridTable

ParentTableDescriptor

Gets the table descriptor this element belongs to.

Declaration
public GridTableDescriptor ParentTableDescriptor { get; }
Property Value
Type Description
GridTableDescriptor

ReadGroupOptions

Gets the GroupOptions, If this element is modified; otherwise it returns a GridGroupOptionsStyleInfo of the first parent element with GroupOptions in the hierarchy.

Declaration
public GridGroupOptionsStyleInfo ReadGroupOptions { get; }
Property Value
Type Description
GridGroupOptionsStyleInfo

ReadOnlyAppearance

Gets the Appearance of the grid table, If this element is modified; otherwise it returns a GridTableCellAppearance of the first parent element with appearance in the hierarchy.

Declaration
public GridTableCellAppearance ReadOnlyAppearance { get; }
Property Value
Type Description
GridTableCellAppearance

SelectedRanges

Internal only.

Declaration
public virtual GridRangeInfoList SelectedRanges { get; }
Property Value
Type Description
GridRangeInfoList

Methods

CreateGroupTypedListRecordsCollection()

Create GroupTypedListRecordsCollection

Declaration
protected override GroupTypedListRecordsCollection CreateGroupTypedListRecordsCollection()
Returns
Type Description
GroupTypedListRecordsCollection

returns GroupTypedListRecordsCollection
Overrides

Dispose(Boolean)

Declaration
protected override void Dispose(bool disposing)
Parameters
Type Name Description
System.Boolean disposing
Overrides

GetBaseAppearance()

Returns a GridTableCellAppearance of the first parent element with appearance in the hierarchy.

Declaration
public GridTableCellAppearance GetBaseAppearance()
Returns
Type Description
GridTableCellAppearance

A GridTableCellAppearance of this element.

GetGroupCaptionDisplayText(String)

Gets the caption text for a group using a specified format.

Declaration
public string GetGroupCaptionDisplayText(string format)
Parameters
Type Name Description
System.String format

See GroupOptions.CaptionText, e.g. "{CategoryCaption}: {Category} - {RecordCount} Items";
Returns
Type Description
System.String

Group caption display text.

GetGroupCaptionText()

Gets the caption text for a group.

Declaration
public string GetGroupCaptionText()
Returns
Type Description
System.String

Caption text for a group.

GetSummaryText(GridSummaryColumnDescriptor)

Returns the formatted summary text for the given group and summary column.

Declaration
public string GetSummaryText(GridSummaryColumnDescriptor scd)
Parameters
Type Name Description
GridSummaryColumnDescriptor scd

The GridSummaryColumnDescriptor provides the GridSummaryColumnDescriptorCollection.
Returns
Type Description
System.String

The summary formatted text as specified with GridSummaryColumnDescriptor.Format

GetSummaryText(String, String)

Returns the formatted summary text for the given group, summary row and column.

Declaration
public string GetSummaryText(string summaryRowName, string summaryColumnName)
Parameters
Type Name Description
System.String summaryRowName

The name of the GridSummaryRowDescriptor in the GridTableDescriptor.SummaryRows collection.
System.String summaryColumnName

The name of the GridSummaryColumnDescriptor in the GridSummaryRowDescriptor.Summaries collection.
Returns
Type Description
System.String

The summary formatted text as specified with GridSummaryColumnDescriptor.Format
Remarks

See GridSummaryColumnDescriptor for an example.

See Also

IsChildVisible(Element)

Determines whether the child of current element is visible.

Declaration
public override bool IsChildVisible(Element el)
Parameters
Type Name Description
Element el

The specified element.
Returns
Type Description
System.Boolean

True if it is visible; False otherwise.
Overrides

OnEnsureInitialized(Object)

This virtual method is called from OnEnsureInitialized(Object) and lets derived elements implement element-specific logic to ensure object is up to data.

Declaration
protected override bool OnEnsureInitialized(object sender)
Parameters
Type Name Description
System.Object sender

The object that triggered the EnsureInitialized(Object) call.
Returns
Type Description
System.Boolean

True if changes were detected and the object was updated; False otherwise.
Overrides

OnInitializeSections(Boolean, SortColumnDescriptorCollection)

Declaration
protected override void OnInitializeSections(bool hasRecords, SortColumnDescriptorCollection fields)
Parameters
Type Name Description
System.Boolean hasRecords
SortColumnDescriptorCollection fields
Overrides

OnInitializeVisibleCounters()

Declaration
protected override void OnInitializeVisibleCounters()
Overrides

ResetAppearance()

Discards any changes for the Appearance object.

Declaration
public void ResetAppearance()

ShouldSerializeAppearance()

Determines whether Appearance has been modified and contents should be serialized at design-time.

Declaration
public bool ShouldSerializeAppearance()
Returns
Type Description
System.Boolean

True if contents were changed; False otherwise.

ShouldShowCaption()

Indicates whether caption row is visible.

Declaration
public override bool ShouldShowCaption()
Returns
Type Description
System.Boolean

True if it is visible; False otherwise.
Overrides

Explicit Interface Implementations

IGridGroupOptionsSource.GetParentGroupOptionsSource()

Returns a IGridGroupOptionsSource of the first parent element with group options in the hierarchy.

Declaration
IGridGroupOptionsSource IGridGroupOptionsSource.GetParentGroupOptionsSource()
Returns
Type Description
IGridGroupOptionsSource

returns IGridGroupOptionsSource for hosting GridGroupOptionStyleInfo

IGridGroupOptionsSource.RaiseGroupOptionsChanged(GridGroupOptionsChangedEventArgs)

Declaration
void IGridGroupOptionsSource.RaiseGroupOptionsChanged(GridGroupOptionsChangedEventArgs e)
Parameters
Type Name Description
GridGroupOptionsChangedEventArgs e

IGridGroupOptionsSource.RaiseGroupOptionsChanging(GridGroupOptionsChangedEventArgs)

Declaration
void IGridGroupOptionsSource.RaiseGroupOptionsChanging(GridGroupOptionsChangedEventArgs e)
Parameters
Type Name Description
GridGroupOptionsChangedEventArgs e

IGridTableCellAppearanceSource.GetAppearance()

Declaration
GridTableCellAppearance IGridTableCellAppearanceSource.GetAppearance()
Returns
Type Description
GridTableCellAppearance

IGridTableCellAppearanceSource.RaiseAppearanceChanged(GridTableCellStyleInfoChangedEventArgs)

Declaration
void IGridTableCellAppearanceSource.RaiseAppearanceChanged(GridTableCellStyleInfoChangedEventArgs e)
Parameters
Type Name Description
GridTableCellStyleInfoChangedEventArgs e

IGridTableCellAppearanceSource.RaiseAppearanceChanging(GridTableCellStyleInfoChangedEventArgs)

Declaration
void IGridTableCellAppearanceSource.RaiseAppearanceChanging(GridTableCellStyleInfoChangedEventArgs e)
Parameters
Type Name Description
GridTableCellStyleInfoChangedEventArgs e

Implements

System.IDisposable