From eb8de3433477ef968877d92add1220851f1e18b0 Mon Sep 17 00:00:00 2001
From: sdoroff <sdoroff@gmail.com>
Date: Wed, 29 Apr 2020 07:28:58 -0400
Subject: [PATCH] Reset DesiredHeight before during measure

Sets DataGridCells.DesiredHeight to 0
before measuring the individual cells
---
 .../Primitives/DataGridCellsPresenter.cs                       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Avalonia.Controls.DataGrid/Primitives/DataGridCellsPresenter.cs b/src/Avalonia.Controls.DataGrid/Primitives/DataGridCellsPresenter.cs
index b014c699bb..0f513e7f42 100644
--- a/src/Avalonia.Controls.DataGrid/Primitives/DataGridCellsPresenter.cs
+++ b/src/Avalonia.Controls.DataGrid/Primitives/DataGridCellsPresenter.cs
@@ -269,6 +269,9 @@ namespace Avalonia.Controls.Primitives
                 // Since we didn't know the final widths of the columns until we resized,
                 // we waited until now to measure each cell
                 double leftEdge = 0;
+                if (autoSizeHeight)
+                    DesiredHeight = 0;
+
                 foreach (DataGridColumn column in OwningGrid.ColumnsInternal.GetVisibleColumns())
                 {
                     DataGridCell cell = OwningRow.Cells[column.Index];