Wer keine Lust hat in den Tiefen des HttpWebRequest zu irren, der nutzt dazu am Besten vorhandene Bibliotheken der Community. Ein Dateiupload l\u00e4sst sich zum Beispiel mit RestSharp<\/a> realisieren.<\/p>\n

In meinem Beispiel will ich eine Datei aus einem bestimmten Verzeichnis des IsolatedStorage hochladen.<\/p>\n

Schritt 1: Ermittlung des Dateipfades<\/p>\n

\r\nvar directoryName = "FilesToUpload";\r\n\r\nstring[] files = null;\r\n\r\n\/\/ get all files from the isolatedstorage in the specified directory\r\nusing (var storage = IsolatedStorageFile.GetUserStoreForApplication())\r\n{\r\n\t\/\/ if the directory does not exists, there is nothing to do\r\n\tif (!storage.DirectoryExists(directoryName))\r\n\t{\r\n\t\treturn;\r\n\t}\r\n\r\n\tfiles = storage.GetFileNames(Path.Combine(directoryName, "*.xml"));\r\n}\r\n\r\n\/\/ if there is no file present in the directory,\r\n\/\/ there is nothing to do either\r\nif (files == null || files.Length == 0)\r\n{\r\n\treturn;\r\n}\r\n\r\n\/\/ use the first file for upload\r\nvar filePath = Path.Combine(directoryName, files[0]);\r\n<\/pre>\n
Schritt 2: Formulierung des Webrequests<\/p>\n
<\/p>\n
\r\nvar client = new RestClient("http:\/\/www.uploadurl.de");\r\nvar request = new RestRequest(Method.POST);\r\nrequest.AddFile("upload", ReadFile(filePath), Path.GetFileName(filePath));\r\n\r\nclient.ExecuteAsync(request, response =>\r\n{\r\n\t\/\/ custom code, after upload did finish\r\n});\r\n<\/pre>\n
Schritt 3: Datei f\u00fcr den Upload als byte-array lesen<\/p>\n
\r\nprivate byte[] ReadFile(string filePath)\r\n{\r\n\tvar bytes = new List<byte>();\r\n\r\n\tusing (var storage = IsolatedStorageFile.GetUserStoreForApplication())\r\n\t{\r\n\t\tusing (var stream = storage.OpenFile(_currentFeedbackFilePath, FileMode.Open, FileAccess.Read))\r\n\t\t{\r\n\t\t\tbyte[] buffer = new byte[1024];\r\n\t\t\tvar offset = 0;\r\n\t\t\tvar readBytes = 0;\r\n\t\t\tdo\r\n\t\t\t{\r\n\t\t\t\treadBytes = stream.Read(buffer, offset, buffer.Length);\r\n\r\n\t\t\t\tif (readBytes > 0)\r\n\t\t\t\t{\r\n\t\t\t\t\tif (readBytes == buffer.Length)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tbytes.AddRange(buffer);\r\n\t\t\t\t\t}\r\n\t\t\t\t\telse\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tvar writtenBytes = new byte[readBytes];\r\n\t\t\t\t\t\tArray.Copy(buffer, writtenBytes, readBytes);\r\n\r\n\t\t\t\t\t\tbytes.AddRange(writtenBytes);\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\r\n\t\t\t} while (readBytes == buffer.Length);\r\n\t\t}\r\n\t}\r\n\r\n\treturn bytes.ToArray();\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Wer versuch mit der API von Windows-Phone (7, 7.5, 8) eine Datei auf einem Webserver hochzuladen, wird schnell merken, dassWeiterlesen…<\/a><\/p>\n
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