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ColumnBase.BestFitModeOnSourceChange Property

Gets or sets how to calculate the optimal width required for this column to completely display its contents when the grid’s ItemsSource is changed.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v24.1.Core.dll

NuGet Package: DevExpress.Wpf.Grid.Core


public BestFitMode? BestFitModeOnSourceChange { get; set; }

Property Value

Type Default Description
Nullable<BestFitMode> null

A mode that specifies how to calculate the optimal width.

Available values:

Name Description

If this mode is assigned to the ColumnBase.BestFitMode of a grid column, this means that it obtains its value from the TableView.BestFitMode property of the owner view.


The column width is calculated based on text of all cells within this column.


The column width is calculated based on the values in the currently visible cells.


The column width is calculated based on all distinct values in the underlying datasource.


In this mode, the column width is calculated as BestFitMode.AllRows if the total count of rows is less than 3,000, and as BestFitMode.DistinctValues if the total count of rows is greater than or equal to 3,000. Also, if the Smart mode is enabled, the TableView.CustomBestFit is raised, thus allowing you to manually calculate the column width.


If the BestFitModeOnSourceChange property is set to null, the GridControl does not calculate the optimal width when the source is changed.

See Also