diff --git a/SunnyUI/Common/UDir.cs b/SunnyUI/Common/UDir.cs
index 16dbdf9d..d9257fc2 100644
--- a/SunnyUI/Common/UDir.cs
+++ b/SunnyUI/Common/UDir.cs
@@ -19,6 +19,7 @@
  * 2020-01-01: V2.2.0 增加文件说明
 ******************************************************************************/
 
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Text.RegularExpressions;
@@ -31,6 +32,48 @@ namespace Sunny.UI
     /// </summary>
     public static class DirEx
     {
+        /// <summary>
+        /// 创建一个目录
+        /// </summary>
+        /// <param name="dir">目录的绝对路径</param>
+        public static bool CreateDir(string dir)
+        {
+            if (dir.IsNullOrEmpty())
+            {
+                throw new ArgumentNullException(dir, "目录不能为空。");
+            }
+
+            if (!Path.IsPathRooted(dir))
+            {
+                throw new ArgumentException(dir, "不包含根路径。");
+            }
+
+            //
+            //
+            try
+            {
+                if (!Directory.Exists(dir))
+                {
+                    Directory.CreateDirectory(dir);
+                }
+
+                return Directory.Exists(dir);
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.Message);
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// 返回当前基目录
+        /// </summary>
+        /// <returns>基目录</returns>
+        public static string CurrentDir()
+        {
+            return AppDomain.CurrentDomain.BaseDirectory.DealPath();
+        }
         /// <summary>
         /// 选择文件夹
         /// </summary>
diff --git a/SunnyUI/Common/UGif.cs b/SunnyUI/Common/UGif.cs
index dd6009e9..8582d19a 100644
--- a/SunnyUI/Common/UGif.cs
+++ b/SunnyUI/Common/UGif.cs
@@ -37,6 +37,7 @@
 using System;
 using System.Drawing;
 using System.Drawing.Imaging;
+using System.IO;
 using System.Windows.Forms;
 
 namespace Sunny.UI
@@ -55,7 +56,7 @@ namespace Sunny.UI
             timer = new Timer();
             timer.Tick += Timer_Tick;
 
-            if (FileEx.Exists(fileName))
+            if (File.Exists(fileName))
             {
                 Image = Image.FromFile(fileName);
             }
diff --git a/SunnyUI/Common/USevenZip.cs b/SunnyUI/Common/USevenZip.cs
index e6c9b0fd..c7ff443d 100644
--- a/SunnyUI/Common/USevenZip.cs
+++ b/SunnyUI/Common/USevenZip.cs
@@ -19,11 +19,8 @@
  * 2020-01-01: V2.2.0 增加文件说明
 ******************************************************************************/
 
-using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.IO;
-using System.Text;
 
 namespace Sunny.UI
 {
@@ -189,67 +186,5 @@ namespace Sunny.UI
 
             return true;
         }
-
-        /// <summary>
-        /// 压缩数组
-        /// </summary>
-        /// <param name="input">数组</param>
-        /// <returns>结果</returns>
-        public static byte[] Compress(byte[] input)
-        {
-            string filename = FileEx.TempFileName();
-            string filename7z = FileEx.TempFileName();
-            File.WriteAllBytes(filename, input);
-            ZipFile(filename, filename7z);
-            byte[] bts = File.ReadAllBytes(filename7z);
-            FileEx.TryDelete(filename);
-            FileEx.TryDelete(filename7z);
-            return bts;
-        }
-
-        /// <summary>
-        /// 解压缩数组
-        /// </summary>
-        /// <param name="input">数组</param>
-        /// <returns>结果</returns>
-        public static byte[] Decompress(byte[] input)
-        {
-            string zipfile = FileEx.TempFileName();
-            File.WriteAllBytes(zipfile, input);
-
-            string unzipDir = DirEx.TempRandomPath();
-            UnZipFile(zipfile, unzipDir);
-            string[] fall = Directory.GetFiles(unzipDir, "*.*", SearchOption.TopDirectoryOnly);
-            string unzipfile = fall[0];
-            byte[] bts = File.ReadAllBytes(unzipfile);
-            FileEx.TryDelete(unzipfile);
-            FileEx.TryDelete(zipfile);
-            DirEx.TryDelete(unzipDir);
-            return bts;
-        }
-
-        /// <summary>
-        /// 压缩字符串
-        /// </summary>
-        /// <param name="input">字符串</param>
-        /// <returns>结果</returns>
-        public static string Compress(string input)
-        {
-            byte[] inputBytes = Encoding.Default.GetBytes(input);
-            byte[] result = Compress(inputBytes);
-            return Convert.ToBase64String(result);
-        }
-
-        /// <summary>
-        /// 解压缩字符串
-        /// </summary>
-        /// <param name="input">字符串</param>
-        /// <returns>结果</returns>
-        public static string Decompress(string input)
-        {
-            byte[] inputBytes = Convert.FromBase64String(input);
-            byte[] depressBytes = Decompress(inputBytes);
-            return Encoding.Default.GetString(depressBytes);
-        }
     }
 }
\ No newline at end of file