初始化属性时出现问题
我一直收到这个错误： CS0501：'jQueryUploadTest.Upload.FilesStatus.thumbnail_url.get'必须声明一个正文，因为它没有标记为抽象或外部
我在我自己的独立网站上的sharepoint项目之外有这个确切的代码，它运行正常。每当我尝试在我的sharepoint项目中实现它时，我都会遇到错误。
以下是我的upload.ashx文件的代码：
<%@ WebHandler Language="C#" Class="jQueryUploadTest.Upload" %>
using System;
using System.Collections.Generic;
using System.IO;
using System.Security.AccessControl;
using System.Web;
using System.Web.Script.Serialization;
namespace jQueryUploadTest {
public class Upload : IHttpHandler {
public class FilesStatus
{
public string thumbnail_url { get; set; }
public string name { get; set; }
public string url { get; set; }
public int size { get; set; }
public string type { get; set; }
public string delete_url { get; set; }
public string delete_type { get; set; }
public string error { get; set; }
public string progress { get; set; }
}
private readonly JavaScriptSerializer js = new JavaScriptSerializer();
private string ingestPath;
public bool IsReusable { get { return false; } }
public void ProcessRequest (HttpContext context) {
//var r = context.Response;
ingestPath = @"C:\temp\ingest\";
context.Response.AddHeader("Pragma", "no-cache");
context.Response.AddHeader("Cache-Control", "private, no-cache");
HandleMethod(context);
}
private void HandleMethod (HttpContext context) {
switch (context.Request.HttpMethod) {
case "HEAD":
case "GET":
ServeFile(context);
break;
case "POST":
UploadFile(context);
break;
case "DELETE":
DeleteFile(context);
break;
default:
context.Response.ClearHeaders();
context.Response.StatusCode = 405;
break;
}
}
private void DeleteFile (HttpContext context) {
string filePath = ingestPath + context.Request["f"];
if (File.Exists(filePath)) {
File.Delete(filePath);
}
}
private void UploadFile (HttpContext context) {
List<FilesStatus> statuses = new List<FilesStatus>();
System.Collections.Specialized.NameValueCollection headers = context.Request.Headers;
if (string.IsNullOrEmpty(headers["X-File-Name"])) {
UploadWholeFile(context, statuses);
} else {
UploadPartialFile(headers["X-File-Name"], context, statuses);
}
WriteJsonIframeSafe(context, statuses);
}
private void UploadPartialFile (string fileName, HttpContext context, List<FilesStatus> statuses) {
if (context.Request.Files.Count != 1) throw new HttpRequestValidationException("Attempt to upload chunked file containing more than one fragment per request");
Stream inputStream = context.Request.Files[0].InputStream;
string fullName = ingestPath + Path.GetFileName(fileName);
using (FileStream fs = new FileStream(fullName, FileMode.Append, FileAccess.Write)) {
byte[] buffer = new byte[1024];
int l = inputStream.Read(buffer, 0, 1024);
while (l > 0) {
fs.Write(buffer,0,l);
l = inputStream.Read(buffer, 0, 1024);
}
fs.Flush();
fs.Close();
}
FilesStatus MyFileStatus = new FilesStatus();
MyFileStatus.thumbnail_url = "Thumbnail.ashx?f=" + fileName;
MyFileStatus.url = "Upload.ashx?f=" + fileName;
MyFileStatus.name = fileName;
MyFileStatus.size = (int)(new FileInfo(fullName)).Length;
MyFileStatus.type = "image/png";
MyFileStatus.delete_url = "Upload.ashx?f=" + fileName;
MyFileStatus.delete_type = "DELETE";
MyFileStatus.progress = "1.0";
/* {
thumbnail_url = "Thumbnail.ashx?f=" + fileName,
url = "Upload.ashx?f=" + fileName,
name = fileName,
size = (int)(new FileInfo(fullName)).Length,
type = "image/png",
delete_url = "Upload.ashx?f=" + fileName,
delete_type = "DELETE",
progress = "1.0"
};
*/
statuses.Add(MyFileStatus);
}
private void UploadWholeFile(HttpContext context, List<FilesStatus> statuses) {
for (int i = 0; i < context.Request.Files.Count; i++) {
HttpPostedFile file = context.Request.Files[i];
file.SaveAs(ingestPath + Path.GetFileName(file.FileName));
string fileName = Path.GetFileName(file.FileName);
FilesStatus MyFileStatus = new FilesStatus();
MyFileStatus.thumbnail_url = "Thumbnail.ashx?f=" + fileName;
MyFileStatus.url = "Upload.ashx?f=" + fileName;
MyFileStatus.name = fileName;
MyFileStatus.size = file.ContentLength;
MyFileStatus.type = "image/png";
MyFileStatus.delete_url = "Upload.ashx?f=" + fileName;
MyFileStatus.delete_type = "DELETE";
MyFileStatus.progress = "1.0";
statuses.Add(MyFileStatus);
}
}
private void WriteJsonIframeSafe(HttpContext context, List<FilesStatus> statuses) {
context.Response.AddHeader("Vary", "Accept");
try {
if (context.Request["HTTP_ACCEPT"].Contains("application/json")) {
context.Response.ContentType = "application/json";
} else {
context.Response.ContentType = "text/plain";
}
} catch {
context.Response.ContentType = "text/plain";
}
string jsonObj = js.Serialize(statuses.ToArray());
context.Response.Write(jsonObj);
}
private void ServeFile (HttpContext context) {
if (string.IsNullOrEmpty(context.Request["f"])) ListCurrentFiles(context);
else DeliverFile(context);
}
private void DeliverFile (HttpContext context) {
string filePath = ingestPath + context.Request["f"];
if (File.Exists(filePath)) {
context.Response.ContentType = "application/octet-stream";
context.Response.WriteFile(filePath);
context.Response.AddHeader("Content-Disposition", "attachment, filename=\"" + context.Request["f"] + "\"");
} else {
context.Response.StatusCode = 404;
}
}
private void ListCurrentFiles (HttpContext context) {
List<FilesStatus> files = new List<FilesStatus>();
string[] names = Directory.GetFiles(@"C:\temp\ingest", "*", SearchOption.TopDirectoryOnly);
foreach (string name in names) {
FileInfo f = new FileInfo(name);
FilesStatus MyFileStatus = new FilesStatus();
MyFileStatus.thumbnail_url = "Thumbnail.ashx?f=" + f.Name;
MyFileStatus.url = "Upload.ashx?f=" + f.Name;
MyFileStatus.name = f.Name;
MyFileStatus.size = (int)f.Length;
MyFileStatus.type = "image/png";
MyFileStatus.delete_url = "Upload.ashx?f=" + f.Name;
MyFileStatus.delete_type = "DELETE";
files.Add(MyFileStatus);
/*files.Add(new FilesStatus
{
thumbnail_url = "Thumbnail.ashx?f=" + f.Name,
url = "Upload.ashx?f=" + f.Name,
name = f.Name,
size = (int)f.Length,
type = "image/png",
delete_url = "Upload.ashx?f=" + f.Name,
delete_type = "DELETE"
});*/
}
context.Response.AddHeader("Content-Disposition", "inline, filename=\"files.json\"");
string jsonObj = js.Serialize(files.ToArray());
context.Response.Write(jsonObj);
context.Response.ContentType = "application/json";
}
}
}
我已经检查了我的版本定位及其asp.net 3.5，我去了我的项目中的属性及其3.5，所以我不认为这是问题。
2 个答案:
答案 0 :(得分：1)
我刚刚意识到当我发现这条线时发生的事情：
<%@ WebHandler Language="C#" Class="jQueryUploadTest.Upload" %>
你正在制作页面句柄（可能是*.ashx），毫无疑问，它是在ASP.Net 1.1应用程序池下编译的。这不支持C＃3.0构造，因此失败。
看看您是否可以将网站移动到ASP.Net 2.0应用程序池。问题应该消失。请注意，框架1.1和2.0之间存在 - 次要 - 不兼容的更改，可能需要您调整web.config和其他细节。
我不想要那个，最简单的方法就是不使用C＃3.0风格的结构：
public class FilesStatus
{
private string m_thumbnail_url;
private string m_name;
private string m_url;
private int m_size;
private string m_type;
private string m_delete_url;
private string m_delete_type;
private string m_error;
private string m_progress;
public string m_thumbnailurl { get { return m_thumbnail_url; } set { m_thumbnail_url = value; } }
public string name { get { return m_name; } set { m_name = value; } }
public string url { get { return m_url; } set { m_url = value; } }
public int size { get { return m_size; } set { m_size = value; } }
public string type { get { return m_type; } set { m_type = value; } }
public string m_deleteurl { get { return m_delete_url; } set { m_delete_url = value; } }
public string m_deletetype { get { return m_delete_type; } set { m_delete_type = value; } }
public string error { get { return m_error; } set { m_error = value; } }
public string progress { get { return m_progress; } set { m_progress = value; } }
}
答案 1 :(得分：0)
编辑虽然可能性很小，但可能不是这样。我建议你先看看my other answer。
问题似乎是你的框架版本对于sharepoint项目是不同的。看看你是否可以将框架3.5或更高版本作为目标。
请参阅documentation：
在C＃3.0及更高版本中，当属性访问器中不需要其他逻辑时，自动实现的属性使属性声明更简洁。它们还使客户端代码能够创建对象。当您声明一个属性时，如下例所示，编译器会创建一个私有的匿名支持字段，只能通过属性的get和set访问器进行访问。
所以这个：
public string thumbnail_url { get; set; }
只能在抽象类（使用abstract关键字）或接口（不使用public关键字）中工作;在C＃3.0+中，它将生成匿名支持字段
更新
我只是试图让你可以定位3.5框架，同时仍然使用C＃pre-3.0语言规范。我现在没有Visual Studio，但我使用了monodevelop：
我只能想象Visual Studio在某处有类似的选项（隐藏），错误信息的帮助稍微有点
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