//请求文件
private void listView_file_DoubleClick(object sender, EventArgs e)
{
if (listView_file.SelectedItems.Count == 0)
{
return;
}
ListViewItem lv_item = listView_file.SelectedItems[0];
int index = lv_item.Index;
applying_file = fileInfo_list[index];
if (host_flag)
{
byte[] file_info;
if (!host_file_list.TryGetValue(applying_file, out file_info))
{
MessageBox.Show("没有找到文件！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
string savePath;
string file_suffix = applying_file.name.Substring(applying_file.name.LastIndexOf('.'));
SaveFileDialog save_file_Dialog = new SaveFileDialog()
{
Filter = "(*" + file_suffix + ")|*" + file_suffix + "",
FileName = applying_file.name
};
if (save_file_Dialog.ShowDialog(this) == DialogResult.OK)
{
savePath = save_file_Dialog.FileName;
using (FileStream fs = new FileStream(savePath, FileMode.Append, FileAccess.Write))
{
fs.Write(file_info, 0, file_info.Length);
fs.Flush();
fs.Close();
}
add_msg2list("系统消息：", "请求的文件已经保存：" + savePath, Color.Red);
}
}
else
{
host_connectNC.Send_message_NumString(5, applying_file.length.ToString() + '_' + applying_file.name);
add_msg2list("系统消息", "正在下载文件:" + applying_file.name, Color.Red);
}
}
//发送文件
private void button_file_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
string file_name = openFileDialog1.SafeFileName; //文件名
string file_path = openFileDialog1.FileName; //文件全路径
long file_length = new FileInfo(file_path).Length; //以字节为单位
if (file_length > 100 * 1000 * 1000) //超过100M
{
MessageBox.Show("文件大小不能超过100M", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
else if (file_length <= 0)
{
MessageBox.Show("文件为空！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
Sock_connected.Send_message_NumString(3, file_name);
add_msg2list("系统消息", "正在发送文件:" + file_path, Color.Red);
byte[] buffer_Chat_send = new byte[1024 * 1024 * 110];//110M缓存
using (FileStream fs = new FileStream(file_path, FileMode.Open, FileAccess.Read))
{
int readLength = 0;
//bool firstRead = true;
//long sentFileLength = 0;
readLength = fs.Read(buffer_Chat_send, 0, buffer_Chat_send.Length);
Sock_connected.Send_message_NumByte(2, buffer_Chat_send, readLength);
/*while ((readLength = fs.Read(buffer_Chat_send, 0, buffer_Chat_send.Length)) > 0 && sentFileLength < file_length)
* {
* sentFileLength += readLength;
*
* //第一次发送的字节流上加前缀
* if (firstRead)
* {
* //第一个字节标记2，代表为文件
* Sock_connected.Send_message_NumByte(2, buffer_Chat_send, readLength);
* firstRead = false;
* }
* Sock_connected.sock.Send(buffer_Chat_send, 0, readLength, SocketFlags.None);
* }*/
fs.Close();
}
}
}
