diff --git a/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/GenericConverter.cs b/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/GenericConverter.cs
deleted file mode 100644
index 43ca0dc..0000000
--- a/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/GenericConverter.cs
+++ /dev/null
@@ -1,50 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Data;
-
-namespace BallanceTasEditor.Frontend.Converters {
-    [ValueConversion(typeof(int), typeof(string))]
-    public class FpsConverter : IValueConverter {
-        public static FpsConverter Instance = new FpsConverter();
-
-        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
-            if (value is int tv) {
-                if (tv <= 0) return DependencyProperty.UnsetValue;
-                else return Backend.FpsConverter.ToDelta(tv).ToString();
-            } else {
-                return DependencyProperty.UnsetValue;
-            }
-        }
-
-        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
-            return Binding.DoNothing;
-        }
-    }
-
-    /// <summary>
-    /// 将IsEnable转换为Visibility。
-    /// </summary>
-    [ValueConversion(typeof(bool), typeof(Visibility))]
-    public class VisibilityConverter : IValueConverter {
-        public static VisibilityConverter Instance = new VisibilityConverter();
-
-        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
-            if (value is bool bv) {
-                if (bv) return Visibility.Visible;
-                else return Visibility.Collapsed;
-            } else {
-                return DependencyProperty.UnsetValue;
-            }
-        }
-
-        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
-            return Binding.DoNothing;
-        }
-    }
-
-}
diff --git a/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/StringifiedDeltaTimeConverter.cs b/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/StringifiedDeltaTimeConverter.cs
new file mode 100644
index 0000000..ada93bc
--- /dev/null
+++ b/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/StringifiedDeltaTimeConverter.cs
@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace BallanceTasEditor.Frontend.Converters {
+
+    [ValueConversion(typeof(string), typeof(string))]
+    public class StringifiedDeltaTimeConverter : IValueConverter {
+        public static readonly StringifiedDeltaTimeConverter Instance = new StringifiedDeltaTimeConverter();
+        
+        public StringifiedDeltaTimeConverter() {
+            m_Validator = new Validator.FpsValidator();
+        }
+
+        private Validator.FpsValidator m_Validator;
+        private static readonly string INVALID_DELTA_TIME = "N/A";
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+            var stringifiedFps = value as string;
+            if (stringifiedFps is null) {
+                return INVALID_DELTA_TIME;
+            }
+
+            return m_Validator.Validate(stringifiedFps).Match(
+                v => Backend.FpsConverter.ToDelta(v).ToString(),
+                _ => INVALID_DELTA_TIME
+            );
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+            return Binding.DoNothing;
+        }
+    }
+}
diff --git a/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/StringifyConverter.cs b/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/StringifyConverter.cs
deleted file mode 100644
index 4dc9bd5..0000000
--- a/BallanceTasEditor/BallanceTasEditor/Frontend/Converters/StringifyConverter.cs
+++ /dev/null
@@ -1,35 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Data;
-
-namespace BallanceTasEditor.Frontend.Converters {
-
-    [ValueConversion(typeof(int?), typeof(string))]
-    public class StringifyIntegerConverter : IValueConverter {
-        public static StringifyIntegerConverter Instance = new StringifyIntegerConverter();
-
-        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
-            if (value is null) {
-                return "";
-            } else if (value is int iv) {
-                return iv.ToString();
-            } else {
-                return DependencyProperty.UnsetValue;
-            }
-        }
-
-        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
-            if (value is string s) {
-                if (int.TryParse(s, out int iv)) return iv;
-                else return null;
-            } else {
-                return DependencyProperty.UnsetValue;
-            }
-        }
-    }
-}
diff --git a/BallanceTasEditor/BallanceTasEditor/Frontend/Views/NewFileDialog.xaml b/BallanceTasEditor/BallanceTasEditor/Frontend/Views/NewFileDialog.xaml
index a83df46..00acedd 100644
--- a/BallanceTasEditor/BallanceTasEditor/Frontend/Views/NewFileDialog.xaml
+++ b/BallanceTasEditor/BallanceTasEditor/Frontend/Views/NewFileDialog.xaml
@@ -51,8 +51,8 @@
                 <TextBox Margin="5" Padding="3" Grid.Row="1" Grid.Column="2" VerticalAlignment="Center"
                          Text="{Binding Fps, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True}"/>
                 <TextBlock Margin="5" Padding="3" Grid.Row="2" Grid.Column="2" VerticalAlignment="Center" 
-                           Text="{Binding Fps, Mode=OneWay, Converter={x:Static conveter:FpsConverter.Instance}, FallbackValue=N/A}"/>
-
+                           Text="{Binding Fps, Mode=OneWay, Converter={x:Static conveter:StringifiedDeltaTimeConverter.Instance}}"
+                           Validation.ErrorTemplate="{x:Null}"/>
             </Grid>
         </Grid>