chore: 初始化 VPSA ASP.NET 管理端

App_code/DownLoadFromServer.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.IO;
+
+/// <summary>
+///DownLoadFromServer 的摘要说明
+/// </summary>
+public class DownLoadFromServer
+{
+    /// <summary>
+    /// 从服务器下载
+    /// </summary>
+	public DownLoadFromServer()
+	{
+		//
+		//TODO: 在此处添加构造函数逻辑
+		//
+	}
+    /// <summary>
+    /// 下载Excele文件
+    /// </summary>
+    /// <param name="ServerPath">服务器存放Excel路径</param>
+    public static void DownLoad(ref string ServerPath)
+    {
+        try
+        {
+            System.IO.FileInfo file = new System.IO.FileInfo(ServerPath);
+            if (file.Exists == true)
+            {
+                System.Web.HttpContext.Current.Response.Clear();
+                System.Web.HttpContext.Current.Response.Charset = "GB2312";
+                System.Web.HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
+                // 添加头信息，为"文件下载/另存为"对话框指定默认文件名
+                System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + System.Web.HttpContext.Current.Server.UrlEncode("Sheet1.xlsx"));
+                // 添加头信息，指定文件大小，让浏览器能够显示下载进度
+                System.Web.HttpContext.Current.Response.AddHeader("Content-Length", file.Length.ToString());
+                // 指定返回的是一个不能被客户端读取的流，必须被下载
+                System.Web.HttpContext.Current.Response.ContentType = "application/ms-excel";
+                // 把文件流发送到客户端
+                System.Web.HttpContext.Current.Response.WriteFile(file.FullName);
+                // 停止页面的执行
+                //Response.End(); 
+                System.Web.HttpContext.Current.Response.Flush();
+                //System.Web.HttpContext.Current.Response.End();
+                HttpContext.Current.ApplicationInstance.CompleteRequest();
+            }
+            else
+            {
+                System.Web.HttpContext.Current.Response.Write("<script>alert('请尽快与管理员联系.')</script>");
+            }
+        }
+        catch (Exception ex)
+        {
+            System.Web.HttpContext.Current.Response.Write("<script>alert('系统出现以下错误://n" + ex.Message + "!//n请尽快与管理员联系.')</script>");
+        }
+    }
+
+    public static void DeleteExcel(ref string ServerPath)
+    {
+        System.IO.FileInfo file = new System.IO.FileInfo(ServerPath);
+        if (file.Exists == true)
+        {
+            File.Delete(ServerPath);
+        }
+    }
+
+}