404页面

web config 设置

  <system.web>

    <customErrors mode="On" defaultRedirect="error.asp" redirectMode="ResponseRewrite">

      <error statusCode="404" redirect="404.aspx" />

    </customErrors>  

  </system.web>

  <system.webServer>

    <httpErrors errorMode="Custom">

      <!--有3中 Custom, DetailedLocalOnly, Detailed-->

      <remove statusCode="404" />

      <error statusCode="404" path="/404.aspx" responseMode="ExecuteURL"  />

    </httpErrors>

  </system.webServer>

在404.aspx.cs

    protected void Page_Load(object sender, EventArgs e)

    {

        Response.StatusCode = 404;

    }

 

如果是自己处理route Uri 的话 

    try

    {

        throw new HttpException(404, "PageNotFound"); //可以 throw to 404page

    }

    catch (Exception ex) 

    {

        throw ex;

    }