diff --git a/sop-sdk/sdk-csharp/SDKCSharp/Client/OpenClient.cs b/sop-sdk/sdk-csharp/SDKCSharp/Client/OpenClient.cs
index dd7e212a..fc6d2880 100644
--- a/sop-sdk/sdk-csharp/SDKCSharp/Client/OpenClient.cs
+++ b/sop-sdk/sdk-csharp/SDKCSharp/Client/OpenClient.cs
@@ -106,7 +106,6 @@ namespace SDKCSharp.Client
                 form[this.openConfig.AccessTokenName] = accessToken;
             }
             form[this.openConfig.AppKeyName] = this.appId;
-            string content = SopSignature.getSignContent(form);
             string sign = SignUtil.CreateSign(form, privateKey, request.Charset, request.SignType);
             form[this.openConfig.SignName] = sign;
 
diff --git a/sop-sdk/sdk-csharp/SDKCSharp/Common/SopSignature.cs b/sop-sdk/sdk-csharp/SDKCSharp/Common/SopSignature.cs
deleted file mode 100644
index 207df76c..00000000
--- a/sop-sdk/sdk-csharp/SDKCSharp/Common/SopSignature.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Text;
-
-namespace SDKCSharp.Common
-{
-    public class SopSignature
-    {
-        public SopSignature()
-        {
-        }
-
-        public static String getSignContent(Dictionary<string, string> form)
-        {
-            StringBuilder content = new StringBuilder();
-            List<string> keys = new List<string>(form.Keys);
-
-            keys.Sort();
-            int index = 0;
-            for (int i = 0; i < keys.Count; i++)
-            {
-                string key = keys[i];
-                string value = form[key];
-                if (!string.IsNullOrEmpty(key) && !string.IsNullOrEmpty(value))
-                {
-                    content.Append((index == 0 ? "" : "&") + key + "=" + value);
-                    index++;
-                }
-            }
-            return content.ToString();
-        }
-    }
-}
diff --git a/sop-sdk/sdk-csharp/SDKCSharp/Program.cs b/sop-sdk/sdk-csharp/SDKCSharp/Program.cs
index d9ab9680..aee43161 100644
--- a/sop-sdk/sdk-csharp/SDKCSharp/Program.cs
+++ b/sop-sdk/sdk-csharp/SDKCSharp/Program.cs
@@ -29,7 +29,9 @@ namespace SDKTest
         public static void Main(string[] args)
         {
             TestGet();
+            Console.WriteLine("--------------------");
             TestCommon();
+            Console.WriteLine("--------------------");
             TestUpload();
         }
 
@@ -103,7 +105,10 @@ namespace SDKTest
             };
             request.BizModel = model;
 
-            string root = Environment.CurrentDirectory;
+            string workDir = Environment.CurrentDirectory;
+            int index = workDir.LastIndexOf(@"/bin/Debug", StringComparison.Ordinal);
+            string root = workDir.Substring(0, index);
+
             Console.WriteLine("当前目录{0}", root);
 
             // 文件上传