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c# webapi 返回指定ContentType//文件虚拟路径string path = System.Web.Hosting.HostingEnvironment.MapPath(@"~/");//存放的测试文件System.IO.FileStream fs = new System.IO.FileStream(path + "47.png", System.IO.FileMode.Open, System.IO.FileAccess.Read);HttpResponseMessage re

c# webapi处理请求文件接口返回的Content-Type →text/plain通过Header中的Content-Disposition属性获取文件名称和扩展名称HttpWebResponseWebClient通过Header中的Content-Disposition属性获取文件名称和扩展名称HttpWebResponse HttpWebResponse response = request.GetResponse() as HttpWebResponse; //文件名称string f

.net WebAPI 返回XML格式化数据（非字符串）方式一： HttpResponseMessage result = Request.CreateResponse<List<Student>>(HttpStatusCode.OK, list, Configuration.Formatters.XmlFormatter); return result;效果：方式二： XmlDocument doc11 = new XmlDocument();