下載txt文件問題

我是.Net開發新手。我嘗試啓用下載txt文件：下載txt文件問題

我用這個代碼：

protected void Page_Load(object sender, EventArgs e) 
    { 
       string str = "Test information"; 
       byte[] bytes = new byte[str.Length * sizeof(char)]; 
       System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length); 
       MemoryStream mem = new MemoryStream(); 
       mem.Write(bytes, 0, str.Length); 

       Stream outStream = Response.OutputStream; 
       Response.ContentType = "application/text/plain"; 
       Response.AppendHeader("Connection", "keep-alive"); 
       Response.AppendHeader("Content-Disposition", " attachment; filename = " + "test.txt"); 
       mem.WriteTo(outStream); 
       outStream.Close(); 
    }

，但我得到不好的第一個字符串（問題編碼）和許多其他字符串有關當前頁面的信息的文本文件。

更新： 這裏是文件我得到

Bad string 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> 
<head><title> 
    ASP.NET AJAX Web Services: Web Service Sample Page 
</title> 
    <script src="../Scripts/jquery-1.3.2.js" type="text/javascript"></script> 
    <script type="text/javascript"> 
     $(document).ready(function() { 
      $("#MainContent_RegisterUser_CreateUserStepContainer_UserName").blur(function (event) { 
       $.ajax({ 
        type: "POST", 
        url: "../About.aspx/validateUser", 
        contentType: "application/json; charset=utf-8", 
        data: "{'username': '" + $(this).val() + "'}", 
        dataType: "json", 
        success: AjaxSucceeded, 
        error: AjaxFailed 
       }); 
      }); 
     }); 
     function AjaxSucceeded(result) { 
      if (result.d == "true") { 
       $("#LoginSpan").text("РўР°РєРѕР№ РїРѕР»СЊР·РѕРІР°С‚РµР»СЊ СѓР¶Рµ СЃСѓС‰РµСЃС‚РІСѓРµС‚"); 
      } 
      else { 
       $("#LoginSpan").text(""); 
      } 
     } 
     function AjaxFailed(result) { 
      alert(result.status + ' ' + result.statusText); 
     } 
    </script> 
    <link href="Styles/Site.css" rel="stylesheet" type="text/css" /> 
</head> 
<body> 
    <form method="post" action="BuyingSuccess.aspx?id=19" id="form1"> 
<div class="aspNetHidden"> 
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" /> 
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" /> 
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE1MjQ5ODA0NjlkGAIFHl9fQ29udHJvbHNSZXF1aXJlUG9zdEJhY2tLZXlfXxYCBSljdGwwMCRIZWFkTG9naW5WaWV3JEhlYWRMb2dpblN0YXR1cyRjdGwwMQUpY3RsMDAkSGVhZExvZ2luVmlldyRIZWFkTG9naW5TdGF0dXMkY3RsMDMFE2N0bDAwJEhlYWRMb2dpblZpZXcPD2QCA2THchHerzY1rr1yLcH18X4YPCuH2pX6++6OU9oOftLDQg==" /> 
</div> 

<script type="text/javascript"> 
//<![CDATA[ 
var theForm = document.forms['form1']; 
if (!theForm) { 
    theForm = document.form1; 
} 
function __doPostBack(eventTarget, eventArgument) { 
    if (!theForm.onsubmit || (theForm.onsubmit() != false)) { 
     theForm.__EVENTTARGET.value = eventTarget; 
     theForm.__EVENTARGUMENT.value = eventArgument; 
     theForm.submit(); 
    } 
} 
//]]> 
</script> 



<script src="/Shop3/WebResource.axd?d=gJqNbXOsVujM8wR8-hfUcLtWhOiTVJCVfh9Lo7jgFFHsWxINU3DVAgCd3VVMHS94GhZGb8YTI_r4HUkshGHWuB2iNiNOHXsKESFMdk577mE1&amp;t=634669639690714017" type="text/javascript"></script> 
<div class="aspNetHidden"> 

    <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWAgL4/Z3vDgLC0ZzyCk29Agd/VrCau7HXz2AM6rx2j8z5dvoBoXKKKc+infsA" /> 
</div> 
    <div class="page"> 
     <div class="header"> 
      <div class="title"> 
       <h1> 
        РРЅСЃС‚СЂСѓРєС†РёРё 
       </h1> 
      </div> 
      <div class="loginDisplay"> 

           <span class="bold"> 
           <span id="HeadLoginView_HeadLoginName">usert</span> 
           </span> 
           <a id="HeadLoginView_HeadLoginStatus" href="javascript:__doPostBack(&#39;ctl00$HeadLoginView$HeadLoginStatus$ctl00&#39;,&#39;&#39;)">Р’С‹Р№С‚Рё</a> 

      </div> 
      <div class="clear hideSkiplink"> 
       <a href="#NavigationMenu_SkipLink"><img alt="Skip Navigation Links" src="/Shop3/WebResource.axd?d=qlxWJrbukMv20w9xY1h0SQe9L8dtSGVTDQ606-0jsJTHpyJh9XQcnnSaKyQTCktjR9G7_qlWhTXAgZB4Ay9LLv-RUiwbYud3LVU-Sm9I6hQ1&amp;t=634669639690714017" width="0" height="0" style="border-width:0px;" /></a><div class="menu" id="NavigationMenu"> 
    <ul class="level1"> 
     <li><a class="level1" href="Default.aspx">РРЅСЃС‚СЂСѓРєС†РёРё</a></li><li><a class="level1" href="About.aspx">Рћ РїСЂРѕРµРєС‚Рµ</a></li> 
    </ul> 
</div><a id="NavigationMenu_SkipLink"></a> 
      </div> 
     </div> 
     <div class="main"> 

    <span id="MainContent_Label1">Р’С‹ РєСѓРїРёР»Рё РёРЅСЃС‚СЂСѓРєС†РёСЋ, РїРѕР·РґСЂР°РІР»СЏРµРј!</span> 

     </div> 
     <div class="clear"> 
     </div> 
    </div> 
    <div class="footer"> 

    </div> 

<script type='text/javascript'>new Sys.WebForms.Menu({ element: 'NavigationMenu', disappearAfter: 500, orientation: 'horizontal', tabIndex: 0, disabled: false });</script></form> 
</body> 
</html>

如何解決這個問題？

來源

2012-12-24 Genadii Voronin

字符不是字節。你需要使用'Encoding'類。 – SLaks

內容類型應該只是「text/plain」 – SWeko

Response.ContentType =「text/plain」;沒有幫助。請看看我的更新 - 我有一個文本文件 –

將ContentType更改爲application/octet-stream以確保文件將通過所有瀏覽器下載。

e.g它改成這樣：

Response.Clear(); 
Response.Charset = ""; 
Response.AddHeader("content-disposition", "attachment;filename=" + fileName); 
Response.ContentType = "application/octet-stream"; 
Response.Write(mem.ToArray()); 
Response.End();

來源

2012-12-24 19:54:27 Blachshma

-1

也許這也是使用System.Net.WebClient下載串一個很好的方式，從網絡資源字節或文件。

WebClient client = new WebClient(); 
byte[] imageAsBytes = client.DownloadData(uri); 
String webSource = client.DownloadString(uri); 
client.DownloadFile(uri, "C:\\myfile.txt");

它還支持異步下載。

來源

2012-12-24 22:25:00

這應該自動執行編碼。 –

問題是關於上傳文件到客戶端。 – SWeko

outStream.Close（）;在Page_load事件結束後添加以下行：聲明

Response.End();

來源

2012-12-25 08:15:14 Harvinder

下載txt文件問題

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