.net中 登录 才能下载文件的方法 Response.WriteFile实现下载
protected void Button2_Click(object sender, EventArgs e) {
//可以在这里加是否登录的判断 string fileName = "chracater14.jpg";//客户端保存的文件名 (其他文件格式都支持) string filePath = Server.MapPath("../../images/chracater14.jpg");//路径 FileInfo fileInfo = new FileInfo(filePath); Response.Clear(); Response.ClearContent(); Response.ClearHeaders(); Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName); Response.AddHeader("Content-Length", fileInfo.Length.ToString()); Response.AddHeader("Content-Transfer-Encoding", "binary"); Response.ContentType = "application/octet-stream"; Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312"); Response.WriteFile(fileInfo.FullName); Response.Flush(); Response.End(); }
string filePath = Server.MapPath(FilePath);//路径
FileInfo fileInfo = new FileInfo(filePath);
if (fileInfo.Exists)
{
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(FileName));
Response.AddHeader("Content-Length", fileInfo.Length.ToString());
Response.AddHeader("Content-Transfer-Encoding", "binary");
Response.ContentType = "application/octet-stream";
Response.ContentEncoding = System.Text.Encoding.Default;
Response.WriteFile(fileInfo.FullName);
Response.Flush();
Response.End();
}
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