Revert "Update Blazor form validation samples"

10.0/BlazorSample_BlazorWebApp/CustomFieldClassProvider.cs

@@ -4,11 +4,7 @@ namespace BlazorSample;
 
 public class CustomFieldClassProvider : FieldCssClassProvider
 {
-    public override string GetFieldCssClass(EditContext editContext,
-        in FieldIdentifier fieldIdentifier)
-    {
-        var isValid = editContext.IsValid(fieldIdentifier);
-
-        return isValid ? "validField" : "invalidField";
-    }
+    public override string GetFieldCssClass(
+            EditContext editContext, in FieldIdentifier fieldIdentifier) =>
+        editContext.IsValid(fieldIdentifier) ? "validField" : "invalidField";
 }

10.0/BlazorSample_BlazorWebApp/CustomFieldClassProvider2.cs

@@ -9,9 +9,8 @@ public override string GetFieldCssClass(EditContext editContext,
     {
         if (fieldIdentifier.FieldName == "Name")
         {
-            var isValid = editContext.IsValid(fieldIdentifier);
-
-            return isValid ? "validField" : "invalidField";
+            return editContext.IsValid(fieldIdentifier) ?
+                "validField" : "invalidField";
         }
 
         return string.Empty;