Question

我的App_Themes / Default /文件夹中有两个样式表：BaseStylesheet.css和NonConvert.css

以下是我在示例webform上的代码。我将LastModifiedDate添加到App_Themes文件夹中每个CSS文件的末尾。更新后，LastModifiedDate会自动更新。

Protected Sub Page_PreRender(sender As Object, e As EventArgs) Handles Me.PreRender
    'CACHING - Add a LastModifiedDate to all CSS files in the App_Themes directory
    Dim link As HtmlLink = Nothing
    For Each c As Control In Header.Controls
        If TypeOf c Is HtmlLink Then
            link = TryCast(c, HtmlLink)
            If link.Href.IndexOf("App_Themes/", StringComparison.InvariantCultureIgnoreCase) >= 0 AndAlso link.Href.EndsWith(".css", StringComparison.InvariantCultureIgnoreCase) Then
                link.Href += String.Format("?t={0}", GetLastModifiedDateString(link.Href))
            End If
        End If
    Next
End Sub

Public Shared Function GetLastModifiedDateString(ByVal filePath As String) As String
    Dim fileInfo As New IO.FileInfo(System.Web.HttpContext.Current.Server.MapPath(filePath))
    If fileInfo.Exists Then
        Return String.Format("{0:yyyyMMddHHmmss}", fileInfo.LastWriteTimeUtc)
    End If
    Return String.Empty
End Function

这两种方法工作得很好。 html输出如下所示：

<link href="../../App_Themes/Default/BaseStyleSheet.css?t=20140228192910" type="text/css" rel="stylesheet" />
<link href="../../App_Themes/Default/NonConvert.css?t=20140228175530" type="text/css" rel="stylesheet" />

当我添加一个按钮并进行回发时，这是我的html输出：

<link href="../../App_Themes/Default/BaseStyleSheet.css?t=20140228192910" type="text/css" rel="stylesheet" />
<link href="../../App_Themes/Default/BaseStyleSheet.css?t=20140228192910" type="text/css" rel="stylesheet" />

我错过了什么？在viewstate保存之前，我是否必须删除查询字符串？

Answer 1

我和你有同样的问题。最后我找到了修复它的方法。也许您可以尝试禁用链接的viewstat，如下所示：

link.EnableViewState = false

回发问题缓存将我的CSS文件放在App_Themes文件夹中

1 个答案: