From fc2f8596c39faa46c24707bdaf980b79fa20a9e4 Mon Sep 17 00:00:00 2001
From: LiWenhao <hs411153079@gmail.com>
Date: Sat, 6 Apr 2024 20:48:32 +0800
Subject: [PATCH] Fix Ipv4

---
 src/Ursa/Controls/IPv4Box.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Ursa/Controls/IPv4Box.cs b/src/Ursa/Controls/IPv4Box.cs
index 1163c374..1e39a204 100644
--- a/src/Ursa/Controls/IPv4Box.cs
+++ b/src/Ursa/Controls/IPv4Box.cs
@@ -210,7 +210,7 @@ protected override void OnTextInput(TextInputEventArgs e)
         if (!char.IsNumber(s![0])) return;
         if (_currentActivePresenter != null)
         {
-            int index = _currentActivePresenter.CaretIndex;
+            int index = Math.Min(_currentActivePresenter.CaretIndex, _currentActivePresenter.Text.Length);
             string? oldText = _currentActivePresenter.Text;
             if (oldText is null)
             {