Handles feedback

Author: Ricardo Bossan (BEYONDSOFT CONSULTING INC) (from Dev Box)

src/System.Windows.Forms/System/Windows/Forms/Printing/PrintPreviewControl.cs

@@ -691,8 +691,10 @@ private void DrawPages(Graphics g, Rectangle rect, PreviewPageInfo[] pages, Brus
                 Rectangle box = pageRenderArea[i];
                 g.DrawRectangle(Pens.Black, box);
 
-                // Page background is fixed white; ForeColor is unrelated (it colors message text only).
-                using (var brush = Color.White.GetCachedSolidBrushScope())
+                // Default page fill is white (paper); an explicitly set ForeColor is still honored,
+                // as it always has been.
+                Color pageColor = _isForeColorSet ? ForeColor : Color.White;
+                using (var brush = pageColor.GetCachedSolidBrushScope())
                 {
                     g.FillRectangle(brush, box);
                 }

src/test/unit/System.Windows.Forms/System/Windows/Forms/Printing/PrintPreviewControlTests.cs

@@ -70,13 +70,13 @@ public void PrintPreviewControl_ForeColorReset_ShouldSerializeReturnsFalse()
     }
 
     [WinFormsFact]
-    public void PrintPreviewControl_PageWithNoImage_RendersWhiteNotForeColor()
+    public void PrintPreviewControl_PageWithNoImage_DefaultForeColor_RendersWhite()
     {
         // Regression test for #14838: a page with no drawable content (e.g. from an empty
-        // PrintDocument) must render as white paper, not as a solid ForeColor rectangle.
+        // PrintDocument), with ForeColor left at its default, must render as white paper,
+        // not as a solid black rectangle.
         using PrintPreviewControl control = new()
         {
-            ForeColor = Color.Black,
             Size = new Size(200, 200)
         };
 
@@ -95,6 +95,31 @@ public void PrintPreviewControl_PageWithNoImage_RendersWhiteNotForeColor()
         Assert.Equal(Color.White.ToArgb(), centerPixel.ToArgb());
     }
 
+    [WinFormsFact]
+    public void PrintPreviewControl_PageWithNoImage_ExplicitForeColor_RendersForeColor()
+    {
+        // ForeColor has driven the page background fill since the original .NET Framework port;
+        // an explicitly set value must still be honored (see PR #14857 discussion), not overridden
+        // by the white default that only applies when ForeColor was never set.
+        using PrintPreviewControl control = new()
+        {
+            ForeColor = Color.Red,
+            Size = new Size(200, 200)
+        };
+
+        control.CreateControl();
+
+        PreviewPageInfo[] pageInfo = [new(image: null, physicalSize: new Size(850, 1100))];
+        control.TestAccessor.Dynamic._pageInfo = pageInfo;
+
+        using Bitmap bitmap = new(control.Width, control.Height);
+        control.DrawToBitmap(bitmap, new Rectangle(Point.Empty, control.Size));
+
+        Color centerPixel = bitmap.GetPixel(bitmap.Width / 2, bitmap.Height / 2);
+
+        Assert.Equal(Color.Red.ToArgb(), centerPixel.ToArgb());
+    }
+
     [Fact]
     public void ShowPrintPreviewControlHighContrast_BackColorIsCorrect()
     {