StreamWriter不會創建新文件

Question

軟件：Visual Web Developer 2008 Express Edition框架：ASP.NET 3.5語言：C＃書籍：編程ASP.NET 3.5

我正在嘗試從書中獲取代碼，但未按預期方式創建C：\\ CodeLocal \\ test.txt

Global.asax中

<%@ Application Language="C#" %>
<%@ Import Namespace="System.IO" %>


<script runat="server">

    void Application_Start(object sender, EventArgs e) 
    {
        // Code that runs on application startup
        Application["strStartMsg"] = "The application has started.";
        string[] Books = {"SciFi","Fiction","Computers","History","Religion"};
        Application["arBooks"] = Books;
        WriteFile("Application Starting");
    }

    void Application_End(object sender, EventArgs e) 
    {
        //  Code that runs on application shutdown
        Application["strEndMsg"] = "The application is ending.";
        WriteFile("Application Ending");
    }

    void WriteFile(string strText) {
        StreamWriter writer = new StreamWriter(@"C:\CodeLocal\test.txt",true);
        string str;
        str = DateTime.Now.ToString() + " " + strText;
        writer.WriteLine(str);
        writer.Close();
    }

</script>

Demo.aspx.cs

public partial class ApplicationStateDemo : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        StringBuilder sb = new StringBuilder();
        sb.AppendFormat("{0}<br/>",(string)Application["strStartMsg"]);
        sb.AppendFormat("{0}<br/>", (string)Application["strEndMsg"]);

        string[] arTest = (string[])Application["arBooks"];
        sb.AppendFormat("{0}<br/>",arTest[1].ToString());

        lblText.Text = sb.ToString();
    }
}

當我運行代碼時，瀏覽器如下所示

但是，當我關閉瀏覽器以停止執行時，沒有創建test.txt

代碼看起來正確，為什么這不起作用？

Answer 1

您是否在尋找Session_Start和End事件處理程序？

當瀏覽器關閉時，應用程序不會結束（並且Application_End事件處理程序不會被調用）。 必須告知應用程序池以溫和的方式結束。 在一段時間不活動后，應用程序池回收或關閉時，會發生這種情況。

Answer 2

因為在您的應用程序的應用程序池下運行的身份可能沒有目錄C：\\ CodeLocal的寫權限。 嘗試為此文件夾的應用程序池標識賦予寫權限。