本文实例讲述了Asp.net获取服务器指定文件夹目录文件并提供下载的方法。分享给大家供大家参考。具体实现方法如下：
复制代码 代码如下:string dirPath = HttpContext.Current.Server.MapPath("uploads/");
if (Directory.Exists(dirPath))
{
//获得目录信息
DirectoryInfo dir = new DirectoryInfo(dirPath);
//获得目录文件列表
FileInfo[] files = dir.GetFiles("*.*");
string[] fileNames = new string[files.Length];

//临时数据表
DataTable dt = new DataTable();
dt.Columns.Add("FileName");

foreach (FileInfo fileInfo in files)
{
DataRow dr = dt.NewRow();
dr["FileName"] = fileInfo.Name;
dt.Rows.Add(dr);

}
Repeater1.DataSource = dt;
Repeater1.DataBind();
}

if (e.CommandName == "down")
{
try
{
string DownloadFileName = "~/uploads/" + e.CommandArgument.ToString();//文件路径
string filepath = Server.MapPath(DownloadFileName);
string filename = Path.GetFileName(filepath);
FileInfo file = new FileInfo(filepath);
Response.Clear();
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8));
Response.AddHeader("Content-length", file.Length.ToString());
Response.Flush();
Response.WriteFile(filepath);
}
catch
{
Response.Write("<script>alert('没有找到下载的源文件')</script>");
}
}

希望本文所述对大家的asp.net程序设计有所帮助。