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fix(DataGrid): not displaying cells from last columns when resized from scrolled state #224

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Nov 18, 2024
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fix(DataGrid): not displaying cells from last columns when resized from scrolled state #224

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8 changes: 8 additions & 0 deletions CommunityToolkit.WinUI.UI.Controls.DataGrid/DataGrid/DataGridColumns.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1245,6 +1245,14 @@ private bool ComputeDisplayedColumns()
_horizontalOffset -= GetEdgedColumnWidth(dataGridColumn);
dataGridColumn = this.ColumnsInternal.GetPreviousVisibleScrollingColumn(dataGridColumn);
}

if (_horizontalOffset == 0 && cx < displayWidth)
{
// if the columns have been scrolled, and all visible columns are fully rendered in the available space,
// then HorizontalAdjustment needs to be updated so that DataGridCellsPresenter.ShouldDisplayCell
// don't hide columns based on the old value.
HorizontalAdjustment = displayWidth - cx;
}
}

// third try to partially scroll in first scrolled off column
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