From 6bc77672e970d2fe6f3710fce6db31aa4e82ee46 Mon Sep 17 00:00:00 2001
From: tian <11429339@qq.com>
Date: Wed, 3 Jun 2026 19:49:44 +0800
Subject: [PATCH] fix: prevent crash when invalid characters typed in
 coordinate editor

EditableNumberConverter.ConvertBack was throwing FormatException
when users typed '=' or other non-numeric characters, causing
WPF binding validation to crash the application on focus change.
Changed to return Binding.DoNothing to silently reject invalid input.
---
 src/UI/WPF/Converters/EditableNumberConverter.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/UI/WPF/Converters/EditableNumberConverter.cs b/src/UI/WPF/Converters/EditableNumberConverter.cs
index ee7886a..4141730 100644
--- a/src/UI/WPF/Converters/EditableNumberConverter.cs
+++ b/src/UI/WPF/Converters/EditableNumberConverter.cs
@@ -36,7 +36,7 @@ namespace NavisworksTransport.UI.WPF.Converters
             string text = value as string;
             if (IsIntermediateText(text))
             {
-                throw new FormatException("请输入有效的数字。");
+                return Binding.DoNothing;
             }
 
             text = text.Trim();
@@ -47,7 +47,7 @@ namespace NavisworksTransport.UI.WPF.Converters
                 return parsedValue;
             }
 
-            throw new FormatException("请输入有效的数字。");
+            return Binding.DoNothing;
         }
 
         public static bool IsIntermediateText(string text)