Class GridViewExpressionColumn

This column can display the results of a calculation on the data item's properties.

Inheritance
System.Object
GridViewColumn
GridViewExpressionColumn
Inherited Members
Namespace: Telerik.Windows.Controls
Assembly: Telerik.Windows.Controls.GridView.dll

Syntax

public class GridViewExpressionColumn : GridViewColumn, IFilterableColumn, IFieldDescriptor, INotifyPropertyChanged, IColumnElement, IExportableColumn

Constructors

GridViewExpressionColumn()

Declaration
public GridViewExpressionColumn()

Fields

DataFormatStringProperty

Identifies the DataFormatString dependency property.

Declaration
public static readonly DependencyProperty DataFormatStringProperty
Field Value
System.Windows.DependencyProperty

ExpressionProperty

Identifies the Expression dependency property.

Declaration
public static readonly DependencyProperty ExpressionProperty
Field Value
System.Windows.DependencyProperty

Properties

DataFormatString

Gets or sets the data format string. Used with string.Format statement. This is a dependency property.

Declaration
public string DataFormatString { get; set; }
Property Value
System.String

The data format string.
Implements

ExportedElementWidth

Gets the actual width of the column.

Declaration
public double ExportedElementWidth { get; }
Property Value
System.Double

Implements

Expression

Gets or sets the expression that will be evaluated.

Declaration
public Expression Expression { get; set; }
Property Value
System.Linq.Expressions.Expression

The expression that will be evaluated.

FilteringDisplayFunc

Gets the filtering display function.

Declaration
protected override Func<object, object> FilteringDisplayFunc { get; }
Property Value
System.Func<System.Object, System.Object>

The filtering display function.
Overrides
Remarks

This function is used by the filtering control distinct values list. It accepts a raw data value and returns what will become the content of the distinct value checkbox.

LambdaExpression

Gets the lambda expression.

Declaration
public LambdaExpression LambdaExpression { get; }
Property Value
System.Linq.Expressions.LambdaExpression

The lambda expression.

Methods

CanGroup()

Determines whether the data represented by the column can be grouped.

Declaration
public override bool CanGroup()
Returns
System.Boolean

true if the data represented by the column can be grouped; otherwise, false.
Overrides

CanSort()

Determines whether the data represented by the column can be sorted.

Declaration
public override bool CanSort()
Returns
System.Boolean

true if the data represented by the column can be sorted; otherwise, false.
Overrides

CopyPropertiesFrom(GridViewColumn)

Copy properties from source column.

Declaration
public override void CopyPropertiesFrom(GridViewColumn source)
Parameters
GridViewColumn source

Overrides

CreateCellElement(GridViewCell, Object)

Creates the element for the cell in view mode.

Declaration
public override FrameworkElement CreateCellElement(GridViewCell cell, object dataItem)
Parameters
GridViewCell cell

System.Object dataItem

Returns
System.Windows.FrameworkElement

Overrides

CreateColumnFilterDescriptor()

Creates the column filter descriptor.

Declaration
public override IColumnFilterDescriptor CreateColumnFilterDescriptor()
Returns
IColumnFilterDescriptor

Overrides

GetCellContent(Object)

Gets the content of the cell.

Declaration
public object GetCellContent(object parameter)
Parameters
System.Object parameter

The data item.
Returns
System.Object

The content.
Implements

GetValueForItem(Object)

Gets the value associated with this column for provided data item.

Declaration
public object GetValueForItem(object item)
Parameters
System.Object item

The data item.
Returns
System.Object

OnCopyingCellClipboardContent(Object)

This method is called for each selected cell to retrieve the default cell content.

Declaration
public override object OnCopyingCellClipboardContent(object item)
Parameters
System.Object item

The data context for the selected element.
Returns
System.Object

An object that represents the content of the cell.
Overrides

OnPropertyChanged(PropertyChangedEventArgs)

Raises the PropertyChanged event.

Declaration
protected override void OnPropertyChanged(PropertyChangedEventArgs args)
Parameters
System.ComponentModel.PropertyChangedEventArgs args

The System.ComponentModel.PropertyChangedEventArgs instance containing the event data.
Overrides

RefreshCellElement(FrameworkElement, DependencyProperty)

Called when cell element needs refresh.

Declaration
protected override void RefreshCellElement(FrameworkElement element, DependencyProperty dependencyProperty)
Parameters
System.Windows.FrameworkElement element

System.Windows.DependencyProperty dependencyProperty

Overrides

Extension Methods