1. 创建1个Azure账号，登录之后创建1个AzureStorage，左下方点Manage Access会看到Primary Access Key和Storage Account，记住它们的位置，等下需要配置到Web.config中。
2. 创建Web.Api project，上传图片的代码：
[HttpPost]
public async Task<HttpResponseMessage> PostFile()
{
HttpRequestMessage request = Request;
if (!request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
string root = System.Web.HttpContext.Current.Server.MapPath("~/App_Data/uploads");
var provider = new MultipartFormDataStreamProvider(root);
var task = await request.Content.ReadAsMultipartAsync(provider);
string accountName = "your account stro";
string accountKey = "your key";
var creds = new StorageCredentials(accountName, accountKey);
var account = new CloudStorageAccount(creds, useHttps: true);
CloudBlobClient client = account.CreateCloudBlobClient();
CloudBlobContainer sampleContainer = client.GetContainerReference("samples");
sampleContainer.CreateIfNotExists();
sampleContainer.SetPermissions(new BlobContainerPermissions()
{
PublicAccess = BlobContainerPublicAccessType.Blob
});
foreach (MultipartFileData file in provider.FileData)
{
var name = file.Headers.ContentDisposition.FileName.Replace("\"","");
CloudBlockBlob blob = sampleContainer.GetBlockBlobReference(name);
using (var filestream = File.OpenRead(file.LocalFileName))
{
blob.UploadFromStream(filestream);
}
}
return Request.CreateResponse(HttpStatusCode.OK);
}
[HttpGet]
public IEnumerable<string> AzureImageUrls()
{
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
var connStr = ConfigurationManager.AppSettings["AzureImageStorage"];
var accnt = CloudStorageAccount.Parse(connStr);
var client = accnt.CreateCloudBlobClient();
var blobs = client.GetContainerReference("samples" /*container name*/).ListBlobs();
var urls = blobs.Select(blob => blob.Uri.AbsoluteUri).ToList();
return urls;
}首先，在上传时，需要设置这行代码：
PublicAccess = BlobContainerPublicAccessType.Blob如果不设置的话，默认的访问权限是不可以在客户端直接访问Blob图片的，因而显示不出图片。
其次，在客户端获取URI时，API中需要设置这行代码：
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
<appSettings>
<add key="AzureImageStorage" value="DefaultEndpointsProtocol=http;AccountName=name;AccountKey=yourkey" />
</appSettings>需要注意的地方就是，value中不允许出现空格。这个链接字符串是标准形式，更多azure链接字符串，可以参照：https://www.connectionstrings.com/windows-azure/
4. 推荐下载cloud berry这种类似FTP的管理工具，方便查看上传的图片，如果传错了可以进行删除：
http://www.cloudberrylab.com
<html>
<script src="jquery-2.1.1.js"></script>
<form method="post" enctype="multipart/form-data" action="http://localhost:55006/api/values/postfile">
<input type="file" name ="uploadfile" ></input>
<input type="submit" value="submit" ></input>
<ul class="imgs">
</ul>
</form>
<script>
$(document).ready(function(){
$.get("http://localhost:55006/api/values/AzureImageUrls", function(data, status){
var html = "";
for(var i = 0;i < data.length; i++){
var d = data[i];
html += "<img src=‘" + d + "‘ width=‘300px‘ height=‘300px‘/>";
}
$(".imgs").html(html);
});
});
</script>
</html>Windows Azure 系列-- 使用Azure + Web API实现图片上传
原文：http://blog.csdn.net/lan_liang/article/details/46336505