Class ColumnGroupDescription
The ColumnGroupDescription class introduced to set the comparer value in the GrupColumnDesription. While we can add the comparer into the view through the ColumnGroupDescription. Describes the Grouping of Items using the ColumnName, Comparer and Converter as Criteria.
Inheritance
Implements
Namespace: Syncfusion.UI.Xaml.Data
Assembly: Syncfusion.Data.WinUI.dll
Syntax
public class ColumnGroupDescription : Object, INotifyPropertyChangedConstructors
ColumnGroupDescription(String, Func<String, Object, Object>, IComparer<Object>)
Initializes a new instance of the ColumnGroupDescription class.
Declaration
public ColumnGroupDescription(string propertyName, Func<string, object, object> keySelector, IComparer<object> comparer)Parameters
| Type | Name | Description |
|---|---|---|
| System.String | propertyName | The property name which is to be grouped. |
| System.Func<System.String, System.Object, System.Object> | keySelector | The keySelector for custom grouping. |
| System.Collections.Generic.IComparer<System.Object> | comparer | The comparer to sort the group key value. |
Properties
Comparer
Gets or sets the Comparer value to sort the GroupKey value.
Declaration
public IComparer<object> Comparer { get; set; }Property Value
| Type | Description |
|---|---|
| System.Collections.Generic.IComparer<System.Object> | The Comparer value to sort the GroupKey value. |
KeySelector
Get or set the KeySeletor for custom grouping.
Declaration
public Func<string, object, object> KeySelector { get; set; }Property Value
| Type | Description |
|---|---|
| System.Func<System.String, System.Object, System.Object> | The KeySeletor for custom grouping. |
PropertyName
Gets or sets the property of the underlying collection view based on which grouping is to be performed.
Declaration
public string PropertyName { get; set; }Property Value
| Type | Description |
|---|---|
| System.String | The property of the underlying collection view based on which grouping is to be performed. |
SortGroupRecords
Gets or sets the value that indicates whether to sort the inner records of group while using custom grouping.
Declaration
public bool SortGroupRecords { get; set; }Property Value
| Type | Description |
|---|---|
| System.Boolean | The default value is false. |
Remarks
By default, grouped columns records are not sorted as the values of all the records in one group will be same. So, only groups will be sorted based on group key. In custom grouping cases, grouped columns records value may differ. So in this case, you can sort the records of group by setting SortGroupRecords property to true.
Events
PropertyChanged
Occurs when the property is changed.
Declaration
public event PropertyChangedEventHandler PropertyChangedEvent Type
| Type |
|---|
| System.ComponentModel.PropertyChangedEventHandler |