I attached a sample you helped me with that has a checkbox to toggle an (error check) column filtering on/off.
I have a problem using this with gridControl.ShowFilters
For example, if you do a filter on column Customer(uncheck filter FOLGA.
THen click the "check to filter freight"
I get this error: The given key was not present in the dictionary
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at Syncfusion.Windows.Controls.Grid.GridDataQueryableCollectionViewWrapper.ExcelFilterPredicates(IQueryable source, Expression& predicate, ParameterExpression& paramExpression)
at Syncfusion.Windows.Controls.Grid.GridDataQueryableCollectionViewWrapper.RefreshFilters()
at Syncfusion.Windows.Data.CollectionViewAdv.ApplyFilters()
at Syncfusion.Windows.Data.CollectionViewAdv.set_FilterPredicates(ObservableCollection`1 value)
at Syncfusion.Windows.Controls.Grid.GridDataVisibleColumns.ApplyFilter(Boolean fullRefresh)
SampleWithFilters_d4f2185f.zip