這篇文章主要介紹了Asp.net獲取服務(wù)器指定文件夾目錄文件并提供下載的方法,涉及使用http協(xié)議操作文件的技巧,需要的朋友可以參考下
本文實(shí)例講述了Asp.net獲取服務(wù)器指定文件夾目錄文件并提供下載的方法。分享給大家供大家參考。具體實(shí)現(xiàn)方法如下：
代碼如下:
string dirPath = HttpContext.Current.Server.MapPath("uploads/");
if (Directory.Exists(dirPath))
{
//獲得目錄信息
DirectoryInfo dir = new DirectoryInfo(dirPath);
//獲得目錄文件列表
FileInfo[] files = dir.GetFiles("*.*");
string[] fileNames = new string[files.Length];
//臨時數(shù)據(jù)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 = "~http://pic02.newdu.com/uploads/" + e.CommandArgument.ToString();//文件路徑
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('沒有找到下載的源文件')</script>");
}
}
希望本文所述對大家的asp.net程序設(shè)計有所幫助。