ASP.NET 保存txt文件

 public void ProcessRequest(HttpContext context)
        {

            context.Response.Clear();
            context.Response.Buffer = true;
            //Server.UrlEncode 防止保存的文件名亂碼
            context.Response.AddHeader("Content-Disposition", "attachment;filename=" + context.Server.UrlEncode("消費明細" + string.Format("{0:yyyyMMddHHmmss}", System.DateTime.Now) + ".txt"));   
            context.Response.ContentType = "text/plain";  
            string message = "Hello World";
            //如果導出的文件要換行，用Environment.NewLine
            message += "Hello World" + Environment.NewLine;
            context.Response.Write(message);
            //停止頁面的執行     
            context.Response.End(); 
        }

注意兩點：

1.保存文件名亂碼問題：用Server.UrlEncode編碼

2.txt文件中的換行問題：Environment.NewLine

3.調用可以用js:window.location.href="download.ashx" 或window.open("download.ashx")