diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..a749d2b7
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,2 @@
+language: csharp
+solution: Qiniu.Net40.Travis.sln
\ No newline at end of file
diff --git a/Qiniu.Net40.Travis.sln b/Qiniu.Net40.Travis.sln
new file mode 100644
index 00000000..9c66b3f8
--- /dev/null
+++ b/Qiniu.Net40.Travis.sln
@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Qiniu.Net40", "src\Qiniu\Qiniu.Net40.Travis.csproj", "{2F5B0328-DE8B-4B53-A500-3077E340A51B}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2F5B0328-DE8B-4B53-A500-3077E340A51B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2F5B0328-DE8B-4B53-A500-3077E340A51B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2F5B0328-DE8B-4B53-A500-3077E340A51B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2F5B0328-DE8B-4B53-A500-3077E340A51B}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/README.md b/README.md
index 11aaf2d0..3bcf0297 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 #Qiniu (Cloud) C# SDK 
 
+[![Build Status](https://api.travis-ci.org/qiniu/csharp-sdk.png?branch=master)](https://travis-ci.org/qiniu/csharp-sdk)
+
 ##关于
 
 此 C# SDK 适用于.NET Framework 2.0+ 和 .NET Core，基于七牛云API参考手册构建。使用此 SDK 构建您的网络应用程序，能让您以非常便捷地方式将数据安全地存储到七牛云存储上。无论您的网络应用是一个网站程序，还是包括从云端（服务端程序）到终端（手持设备应用）的架构的服务或应用，通过七牛云存储及其 SDK，都能让您应用程序的终端用户高速上传和下载，同时也让您的服务端更加轻盈。
diff --git a/src/Qiniu/Qiniu.Net40.Travis.csproj b/src/Qiniu/Qiniu.Net40.Travis.csproj
new file mode 100644
index 00000000..8367440b
--- /dev/null
+++ b/src/Qiniu/Qiniu.Net40.Travis.csproj
@@ -0,0 +1,147 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Release</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{2F5B0328-DE8B-4B53-A500-3077E340A51B}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Qiniu</RootNamespace>
+    <AssemblyName>Qiniu</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <BaseIntermediateOutputPath>..\..\bin\net40\obj</BaseIntermediateOutputPath>
+    <OutputPath>..\..\bin\net40\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;Net40</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
+    <DocumentationFile>..\..\bin\net40\Qiniu.xml</DocumentationFile>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <BaseIntermediateOutputPath>..\..\bin\net40\obj</BaseIntermediateOutputPath>
+    <OutputPath>..\..\bin\net40\</OutputPath>
+    <DefineConstants>TRACE;Net40</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
+    <DocumentationFile>..\..\bin\net40\Qiniu.xml</DocumentationFile>
+  </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+  </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>
+    </AssemblyOriginatorKeyFile>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Newtonsoft.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.9.0.1\lib\net40\Newtonsoft.Json.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <!--
+    <Reference Include="System.Net.Http">
+      <HintPath>..\packages\System.Net.Http.dll</HintPath>
+    </Reference>
+	-->
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="IO\SimpleUploader.cs" />
+    <Compile Include="QiniuCSharpSDK.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Common\Config.cs" />
+    <Compile Include="Common\Zone.cs" />
+    <Compile Include="Common\ZoneHelper.cs" />
+    <Compile Include="Common\ZoneInfo.cs" />
+    <Compile Include="CDN\Model\RefreshRequest.cs" />
+    <Compile Include="CDN\Model\RefreshInfo.cs" />
+    <Compile Include="CDN\Model\RefreshResult.cs" />
+    <Compile Include="CDN\Model\PrefetchRequest.cs" />
+    <Compile Include="CDN\Model\PrefetchInfo.cs" />
+    <Compile Include="CDN\Model\PrefetchResult.cs" />
+    <Compile Include="CDN\Model\BandwidthRequest.cs" />
+    <Compile Include="CDN\Model\BandwidthInfo.cs" />
+    <Compile Include="CDN\Model\BandwidthResult.cs" />
+    <Compile Include="CDN\Model\FluxRequest.cs" />
+    <Compile Include="CDN\Model\FluxInfo.cs" />
+    <Compile Include="CDN\Model\FluxResult.cs" />
+    <Compile Include="CDN\Model\LogListRequest.cs" />
+    <Compile Include="CDN\Model\LogListInfo.cs" />
+    <Compile Include="CDN\Model\LogListResult.cs" />
+    <Compile Include="CDN\Model\HotLinkRequest.cs" />
+    <Compile Include="CDN\CdnManager.cs" />
+    <Compile Include="Util\Auth.cs" />
+    <Compile Include="Util\Mac.cs" />
+    <Compile Include="Util\Signature.cs" />
+    <Compile Include="Util\UrlHelper.cs" />
+    <Compile Include="Util\Base64.cs" />
+    <Compile Include="Util\CRC32.cs" />
+    <Compile Include="Util\ETag.cs" />
+    <Compile Include="Util\Hashing.cs" />
+    <Compile Include="Util\StringHelper.cs" />
+    <Compile Include="Util\UserEnv.cs" />
+    <Compile Include="Http\HttpCode.cs" />
+    <Compile Include="Http\ContentType.cs" />
+    <Compile Include="Http\HttpResult.cs" />
+    <Compile Include="Http\HttpManager.cs" />
+    <Compile Include="IO\Model\ChunkUnit.cs" />
+    <Compile Include="IO\Model\PutPolicy.cs" />
+    <Compile Include="IO\Model\ResumeContext.cs" />
+    <Compile Include="IO\Model\ResumeHelper.cs" />
+    <Compile Include="IO\Model\ResumeInfo.cs" />
+    <Compile Include="IO\Model\UploadController.cs" />
+    <Compile Include="IO\Model\UploadProgressHandler.cs" />
+    <Compile Include="IO\ResumableUploader.cs" />
+    <Compile Include="IO\FormUploader.cs" />
+    <Compile Include="IO\UploadManager.cs" />
+    <Compile Include="IO\DownloadManager.cs" />
+    <Compile Include="RS\Model\BatchResult.cs" />
+    <Compile Include="RS\BucketManager.cs" />
+    <Compile Include="RS\Model\BatchInfo.cs" />
+    <Compile Include="RS\Model\BucketsResult.cs" />
+    <Compile Include="RS\Model\DomainsResult.cs" />
+    <Compile Include="RS\Model\FileDesc.cs" />
+    <Compile Include="RS\Model\ListInfo.cs" />
+    <Compile Include="RS\Model\ListResult.cs" />
+    <Compile Include="RS\Model\StatInfo.cs" />
+    <Compile Include="RS\Model\StatResult.cs" />
+    <Compile Include="RS\Model\BucketInfo.cs" />
+    <Compile Include="RS\Model\BucketResult.cs" />
+    <Compile Include="RSF\Model\PfopResult.cs" />
+    <Compile Include="RSF\OperationManager.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\Packages.Net40.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!--
+  <PropertyGroup>
+    <PostBuildEvent>
+	  del  /q /s Qiniu.pdb
+	  rd  /q /s .\obj\
+  </PostBuildEvent>
+  </PropertyGroup>
+  -->
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/src/Qiniu/RSF/OperationManager.cs b/src/Qiniu/RSF/OperationManager.cs
index 7e38278f..74882c54 100644
--- a/src/Qiniu/RSF/OperationManager.cs
+++ b/src/Qiniu/RSF/OperationManager.cs
@@ -272,8 +272,6 @@ public HttpResult dfopData(string fop, string localFile)
             try
             {
                 string dfopUrl = string.Format("{0}/dfop?fop={1}", Config.DFOP_API_HOST, fop);
-                string key = Path.GetFileName(localFile);
-                byte[] data = File.ReadAllBytes(localFile);
                 string token = auth.createManageToken(dfopUrl);
                 string boundary = HttpManager.createFormDataBoundary();
                 string sep = "--" + boundary;