我是c#客户端和服务器应用程序的新手,我正在处理文件上传客户端和服务器应用程序。
我可以从客户端应用程序成功将我的文件名和文件数据上传到服务器。但是当我尝试实现一个新的文本框,允许文件上传客户端输入他/她的名字,并在他/她点击发送按钮时将信息与文件名和文件数据一起发送。
客户端应用程序。
/* file name and file length */
byte[] fName = Encoding.UTF8.GetBytes(fileName);
byte[] fNameLen = BitConverter.GetBytes(fileName.Length); // length of file name
clientData = new byte[4 + fileName.Length];
System.Diagnostics.Debug.WriteLine("fName " + fName.Length);
System.Diagnostics.Debug.WriteLine("fNamelen " + fNameLen.Length);
fNameLen.CopyTo(clientData, 0);
fName.CopyTo(clientData, 4);
/* author name and author name length */
byte[] aName = Encoding.UTF8.GetBytes(textBox2.Text);
byte[] aNameLen = BitConverter.GetBytes(textBox2.Text.Length);
System.Diagnostics.Debug.WriteLine("aName " + aName.Length);
System.Diagnostics.Debug.WriteLine("aNamelen " + aNameLen.Length);
authorData = new byte[9 + textBox2.Text.Length];
aNameLen.CopyTo(authorData, 5);
aName.CopyTo(authorData, 9);
服务器应用程序
/* retriving of file name */
System.Diagnostics.Debug.WriteLine("Error 1");
fNameLen = BitConverter.ToInt32(state.buffer, 0);
System.Diagnostics.Debug.WriteLine("Error 2 fNameLen " + fNameLen);
string Filename = Encoding.UTF8.GetString(state.buffer, 4, fNameLen);
System.Diagnostics.Debug.WriteLine("Error 3");
System.Diagnostics.Debug.WriteLine("filename length " + fNameLen);
receivedPath = @"C:\testfiles\" + Filename;
System.Diagnostics.Debug.WriteLine("bytesREad1 " + bytesRead);
System.Diagnostics.Debug.WriteLine(receivedPath);
/* retriving of author name */
aNameLen = BitConverter.ToInt32(state.buffer, 5);
System.Diagnostics.Debug.WriteLine("Error 4");
System.Diagnostics.Debug.WriteLine("error 5");
System.Diagnostics.Debug.WriteLine("author name length " + aNameLen);
string authorName = ASCIIEncoding.ASCII.GetString(state.buffer, 9, aNameLen);
System.Diagnostics.Debug.WriteLine("Error 6");
System.Diagnostics.Debug.WriteLine("author name " + authorName);
System.Diagnostics.Debug.WriteLine("author name length " + aNameLen);
输出窗口和以粗体显示的错误:
提前谢谢。
答案 0 :(得分:1)
如果您使用BinaryReader / BinaryWriter,情况会更容易。
示例:
<强>客户端强>
fileContents
是一个字节数组。
var stream = new MemoryStream();
var writer = new BinaryWriter(stream);
writer.Write(fileName);
writer.Write(authorName);
writer.Write(fileContents.Length);
writer.Write(fileContents);
var data = stream.ToArray(); // send this data array to server
writer.Dispose();
stream.Dispose();
服务器强>
var stream = new MemoryStream(state.buffer);
var reader = new BinaryReader(stream);
var fileName = reader.ReadString();
var author = reader.ReadString();
var fileContents = reader.ReadBytes(reader.ReadInt32());
reader.Dispose();
stream.Dispose();