diff --git a/samples/ControlCatalog/Pages/DataGridPage.xaml b/samples/ControlCatalog/Pages/DataGridPage.xaml index cacc2204bd..6817d0698e 100644 --- a/samples/ControlCatalog/Pages/DataGridPage.xaml +++ b/samples/ControlCatalog/Pages/DataGridPage.xaml @@ -38,8 +38,8 @@ - - + + diff --git a/src/Avalonia.Controls.DataGrid/DataGrid.cs b/src/Avalonia.Controls.DataGrid/DataGrid.cs index 6687c59aa4..8f9b9583cf 100644 --- a/src/Avalonia.Controls.DataGrid/DataGrid.cs +++ b/src/Avalonia.Controls.DataGrid/DataGrid.cs @@ -2285,6 +2285,17 @@ namespace Avalonia.Controls } } + /// + /// Comparator class so we can sort list by the display index + /// + public class DisplayIndexComparer : IComparer + { + int IComparer.Compare(DataGridColumn x, DataGridColumn y) + { + return (x.DisplayIndexWithFiller < y.DisplayIndexWithFiller) ? -1 : 1; + } + } + /// /// Builds the visual tree for the column header when a new template is applied. /// @@ -2309,8 +2320,11 @@ namespace Avalonia.Controls ColumnsInternal.FillerColumn.IsRepresented = false; } _columnHeadersPresenter.OwningGrid = this; - // Columns were added before before our Template was applied, add the ColumnHeaders now - foreach (DataGridColumn column in ColumnsItemsInternal) + + // Columns were added before our Template was applied, add the ColumnHeaders now + List sortedInternal = new List(ColumnsItemsInternal); + sortedInternal.Sort(new DisplayIndexComparer()); + foreach (DataGridColumn column in sortedInternal) { InsertDisplayedColumnHeader(column); }