Response.Rewrite不工作 [英] Response.Rewrite not working

问题描述

dt = (DataTable)ViewState["Data"];
           if (dt.Rows.Count != 0)
           {
               string file = new ExcelHelper().ExportToExcel(dt);
               string rootPath = HttpContext.Current.Server.MapPath("~\\ExcelFiles\\").ToString();
               string localCopy = Guid.NewGuid().ToString() + ".xlsx";
               File.Copy(file, rootPath + localCopy);
               string str = rootPath + localCopy;
               Response.Write(str);  // not writing anything
               Response.Redirect(str); // not going to path..
           }

文件存在，路径也正确..

file is present , path is also correct..

推荐答案

Response.Write（str ）只会打印页面顶部str中的字符串，我怀疑你真正想要的是什么。



然而，你然后调用Response.Redirect（ str），如果str是正确的，将转到一个新页面，所以你以前的Response.Write无论如何都会丢失。



另外，你不能重定向因为你将它设置为本地文件路径。 str看起来像c：\inetpub \wwwroot \ MyApp\ExcelFiles。



如果你想将Excel文件下载到客户端你可以做Response.Redirect（〜/ ExcelFiles /+ fileName）;

Response.Write(str) will just print the string that is in str at the top of the page which I doubt is what you really want.

However, you then call Response.Redirect(str) which, if str were correct, would go to a new page and so your previous Response.Write would be lost anyway.

Also, you can't redirect to str because you have it set to a local file path. str looks something like c:\inetpub\wwwroot\MyApp\ExcelFiles.

If you are trying to download the Excel file to the client you can do Response.Redirect("~/ExcelFiles/" + fileName);

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