foreground color fix (#8149)

fixes #8148

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue8148.cs

@@ -0,0 +1,22 @@
+using Xamarin.Forms.CustomAttributes;
+using Xamarin.Forms.Internals;
+
+namespace Xamarin.Forms.Controls.Issues
+{
+	[Preserve(AllMembers = true)]
+	[Issue(IssueTracker.Github, 8148, "WPF Entry initial TextColor ignored when typing", PlatformAffected.WPF)]
+	public class Issue8148 : TestContentPage
+	{
+		protected override void Init()
+		{
+			Content = new StackLayout()
+			{
+				Children =
+				{
+					new Label() { Text = "Start typing - text should be red immediately as you typing" },
+					new Entry { TextColor = Color.Red },
+				}
+			};
+		}
+	}
+}

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Xamarin.Forms.Controls.Issues.Shared.projitems

@@ -36,6 +36,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Issue6945.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue7313.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue5500.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Issue8148.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue8008.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue6640.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue7556.cs" />

Xamarin.Forms.Platform.WPF/Renderers/EntryRenderer.cs

@@ -143,8 +143,6 @@ namespace Xamarin.Forms.Platform.WPF
 
 			Entry entry = Element;
 			if (entry != null)
-			{
-				if (!IsNullOrEmpty(entry.Text))
 			{
 				if (!entry.TextColor.IsDefault)
 					Control.Foreground = entry.TextColor.ToBrush();
@@ -155,7 +153,6 @@ namespace Xamarin.Forms.Platform.WPF
 				// so the colors change immediately and remain changed when the control gets focus
 				Control.OnApplyTemplate();
 			}
-			}
 			else
 				Control.Foreground = (Brush)WControl.ForegroundProperty.GetMetadata(typeof(FormsTextBox)).DefaultValue;
 		}