From d81b7bd0840e2de8043f18596c575f6111a8bcc8 Mon Sep 17 00:00:00 2001
From: zqm <zqm@example.com>
Date: Tue, 11 Nov 2025 16:06:51 +0800
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---
 Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index 8e288f2..0dca14d 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -1108,15 +1108,9 @@ namespace JoyD.Windows.CS
                         btnSaveTempDiff.Visible = false;
                         // 显示区域编号设置控件
                         txtRegionNumber.Visible = true;
-                        // 更新文本框的值为当前选中区域的编号
-                        if (_selectedRegionIndex != -1)
-                        {
-                            var selectedRegion = _drawnRectangles.FirstOrDefault(r => r.Index == _selectedRegionIndex);
-                            if (selectedRegion != null)
-                            {
-                                txtRegionNumber.Text = selectedRegion.Index.ToString();
-                            }
-                        }
+                        // 在绘制状态下，显示下一个测温区的编号（当前已绘制数量 + 1）
+                        int nextRegionNumber = _drawnRectangles.Count + 1;
+                        txtRegionNumber.Text = nextRegionNumber.ToString();
                         // 隐藏所有画笔大小按钮
                         btnBrushSize1.Visible = false;
                         btnBrushSize3.Visible = false;