QueryColumnStore class

April 28, 2021

Represents list of result columns.

public class Korzh.EasyQuery.QueryColumnStore
    : QueryColumnList

Package: Korzh.EasyQuery (targets: netstandard2.0)

Assembly: Korzh.EasyQuery.dll

Constructors

Name	Type	Description
QueryColumnStore(Query query, `bool` justSorting)	`void`	Initializes a new instance of the Korzh.EasyQuery.QueryColumnStore class.

Fields

Name	Type	Description
parentQuery	Query	The reference to parent Query object

Properties

Name	Type	Description
IsJustSorting	`bool`	Gets a value indicating whether this instance of the column store is used for "just sorting" columns.
IsUpdating	`bool`	Gets a value indicating whether this Korzh.EasyQuery.QueryColumnList is updating.
Model	DataModel	Gets the DataModel object associated with this list
ParentQuery	Query	Gets the parent query.
SortedColumns	SortedColumnList	Gets the list of sorted columns.

Events

Name	Type	Description
ColumnsChanged	`ColumnsChangedEventHandler`	Occurs after column list has been changed.
ColumnsChanging	`ColumnsChangingEventHandler`	Occurs when columns list is going to be changed.

Methods

Name	Type	Description
BeginUpdate()	`void`	Turns on the "updating" state. Any changes occured during this state will not initiate Korzh.EasyQuery.QueryColumnStore.ColumnsChanged event until Korzh.EasyQuery.QueryColumnStore.EndUpdate is called.
ClearItems()	`void`	Removes all elements from the `System.Collections.ObjectModel.Collection'1`.
CoreRefreshParams()	`void`	Refreshes the list of query parameters by parameters associated with attributes used in query columns .
EndUpdate()	`void`	Turns the "updating" state off.
InsertItem(`int` index, QueryColumn item)	`void`	Inserts an element into the `System.Collections.ObjectModel.Collection'1` at the specified index.
IsColumnsChangeAccepted(ChangeType what, QueryColumn column, `int` info)	`bool`	Calls ColumnsChanging event and return boolean value that indicates whether the change is accepted.
LoadFromXmlReader(`XmlReader` reader)	`void`	Loads the column list using `System.Xml.XmlReader` object.
Move(`int` index, `int` newIndex)	`void`	Moves the specified index of the current.
ReadFromJsonAsync(`JsonReader` reader)	`Task`	Loads the column list using `Newtonsoft.Json.JsonReader` object (asynchronous way).
RemoveItem(`int` index)	`void`	Removes the element at the specified index of the `System.Collections.ObjectModel.Collection'1`.
ResyncSortingList(`bool` changeInnerIndex)	`void`	Resynchronizes the sorting list of columns correspondingly to their order.
SaveToXmlWriter(`XmlWriter` writer, `string` tagName)	`void`	Saves the column list to XML.
WriteToJsonAsync(`JsonWriter` writer)	`Task`	Saves the column list using `Newtonsoft.Json.JsonWriter` object (asynchronous way).