如何在asp.net c#中生成下载音乐(mp3)的代码

本文关键字：音乐 下载 mp3 代码 asp net | 更新日期: 2023-09-27 18:17:07

我有一个asp.net webform应用程序(音乐网站)。我想要一个下载按钮。当用户点击这个。选定的音乐开始下载与浏览器。我该怎么做呢?

下面是我试过的代码:

string id_new;
id_new = Session["selectedmusicID"].ToString();
DataTable dt2 = new DataTable();
dt2 = blm.selectMusic("sel_music", Convert.ToInt32(id_new));
string test = dt2.Rows[0][9].ToString();
string test2 = test.Substring(9);
Context.Response.Clear();
Context.Response.Buffer = true;
Context.Response.AppendHeader("Content-Disposition", "attachment; filename=" + test2);
Context.Response.ContentType = "audio/mp3";
Context.Response.TransmitFile(@"~'music'" + test2 );
Context.Response.End();

见此图

如何在asp.net c#中生成下载音乐(mp3)的代码

试试这个:

int id = int.Parse(context.Request.QueryString["id"]);
byte[] bytes;
string contentType;
string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
string name;
using (SqlConnection con = new SqlConnection(strConnString))
{
    using (SqlCommand cmd = new SqlCommand())
    {
        cmd.CommandText = "select Name, Data, ContentType from tblFiles where Id=@Id";
        cmd.Parameters.AddWithValue("@Id", id);
        cmd.Connection = con;
        con.Open();
        SqlDataReader sdr = cmd.ExecuteReader();
        sdr.Read();
        bytes = (byte[])sdr["Data"];
        contentType = sdr["ContentType"].ToString();
        name = sdr["Name"].ToString();
        con.Close();
    }
}
context.Response.Clear();
context.Response.Buffer = true;
context.Response.AppendHeader("Content-Disposition", "attachment; filename=" + name);
context.Response.ContentType = contentType;
context.Response.BinaryWrite(bytes);
context.Response.End();

如果你不使用数据库，那么试试这个:

string FileName = dateTimeStamp + "SiteReservation.doc";
if (FileName != "")
{
    System.IO.FileInfo file = new System.IO.FileInfo(path + dateTimeStamp + "SiteReservation.doc");
    if (file.Exists)
    {
        Response.Clear();
        Response.AddHeader("Content-Disposition", "attachment; filename=SiteReservation.doc");
        Response.AddHeader("Content-Length", file.Length.ToString());
        Response.ContentType = "application/octet-stream";
        Response.WriteFile(file.FullName);
        //Response.End();
        HttpContext.Current.ApplicationInstance.CompleteRequest();
    }
    else
    {
        Response.Write("This file does not exist.");
    }
}

试试这个，你可能会得到一个想法

 protected void Button1_Click(object sender, EventArgs e)
    {
       Response.ContentType = "Application/mp3";
       Response.AppendHeader("Content-Disposition", "attachment;filename=filename.mp3");
       Response.TransmitFile(Server.MapPath("~'Location'filename.mp3"));
       Response.End();
    }
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