From cd1d18d3652f2fb70da40b69b974c9dd3dff8d8f Mon Sep 17 00:00:00 2001
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Date: Mon, 5 Jul 2021 15:55:44 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=96=87=E4=BB=B6=E5=A4=B9?=
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修复文件夹路径拼写问题，单反斜杠（Windows），单斜杠（Linux）。

在 Linux 系统下，会错误的创建名称为 \poifiles 文件夹，并且将临时文件直接存储到到 /tmp 目录下面，并非 /tmp/poifiles 目录。

从 Windows 和 Linux 测试通过。
---
 main/Util/TempFile.cs | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/main/Util/TempFile.cs b/main/Util/TempFile.cs
index e503a3855..325a6ed91 100644
--- a/main/Util/TempFile.cs
+++ b/main/Util/TempFile.cs
@@ -1,4 +1,4 @@
-
+
 namespace NPOI.Util
 {
     using System;
@@ -21,13 +21,13 @@ public static FileInfo CreateTempFile(String prefix, String suffix)
 
             if (dir == null)
             {
-                dir = Directory.CreateDirectory(Path.GetTempPath() + @"\poifiles").FullName;
+                dir = Directory.CreateDirectory(Path.Combine(Path.GetTempPath(), "poifiles")).FullName;
             }
             // Generate a unique new filename 
-            string file= dir + "\\" + prefix + Guid.NewGuid().ToString() + suffix;
+            string file = Path.Combine(dir, prefix + Guid.NewGuid().ToString() + suffix);
             while (File.Exists(file))
             {
-                file = dir + "\\" + prefix + Guid.NewGuid().ToString() + suffix;
+                file = Path.Combine(dir, prefix + Guid.NewGuid().ToString() + suffix);
                 Thread.Sleep(1);
             }
             FileStream newFile = new FileStream(file, FileMode.CreateNew, FileAccess.ReadWrite);
@@ -40,12 +40,12 @@ public static string GetTempFilePath(String prefix, String suffix)
         {
             if (dir == null)
             {
-                dir = Directory.CreateDirectory(Path.GetTempPath() + @"\poifiles").FullName;
+                dir = Directory.CreateDirectory(Path.Combine(Path.GetTempPath(), "poifiles")).FullName;
             }
             Random rnd = new Random(DateTime.Now.Millisecond);
             Thread.Sleep(10);
             //return prefix + rnd.Next() + suffix;
-            return dir + "\\" + prefix + rnd.Next() + suffix;
+            return Path.Combine(dir, prefix + rnd.Next() + suffix);
         }
     }
 }