Question

ASP.NET 实现文件下载（弹出打开保存文件对话框）

做毕业设计，需要做一个下载模块，大概功能就是弹出一个对话框然后可以自己选择下载路径的功能，希望提供答案的人可以给个详细的答案或者直接发QQ 514429551，我会给予加分的，谢谢

Answer 1

在点文件时,在点击事件里写
Response.Redirect("文件路径");

Answer 2

public class MyFlush:IHttpHandler
{
public bool IsReusable
{

get { return false; }

}

public void ProcessRequest(HttpContext context)
{
try
{
//
byte[] bytes = new byte[256];

string filename = Path.GetFileName(context.Request.FilePath);

string path = context.Server.MapPath(filename);

FileStream stream = new FileStream(path,FileMode.Open,FileAccess.Read,FileShare.Read);

//用于文件另存为

context.Response.ContentType = "application/octet-stream";

context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8));
context.Response.AppendHeader("Content-Length",stream.Length.ToString());

//文件总长度
int totalLength = Convert.ToInt32(stream.Length);

if (context.Response.IsClientConnected)
{
while (totalLength > -1)
{
totalLength = totalLength - bytes.Length;
stream.Read(bytes, 0, bytes.Length);
context.Response.OutputStream.Write(bytes,0, bytes.Length);
}
}
stream.Close();
}
catch
{
context.Response.Write(null);
}
}
}

Answer 3

直接连接路径就可以下载了啊 也会弹出对话框的 将路径保存在数据库字段中