Question

我的项目中有一个问题是找到网站的上次修改日期..

是在asp.net中找到的任何代码

提前感谢..

Answer 1

查看此问题

How can you mine the "Last Modified Date" for an ASP.NET page which is based on a Master Page?

您需要的基本代码是

Dim strPath As String = Request.PhysicalPath
Label1.Text = "Modified: " + System.IO.File.GetLastWriteTime(strPath).ToString()

Answer 2

FileInfo.LastWriteTime应该能满足您的需求：

System.IO.File.GetLastWriteTime(Request.PhysicalPath).ToString();

根据您对其他答案的评论，您希望获得任何网站的最后修改时间（而不是您自己的ASP.NET页面）。您可以使用Net.HttpWebRequest请求指定的网址获取LastModified的HttpResponse属性：

Protected Sub GetLastModifiedTimeOfWebPage(sender As Object, e As EventArgs)
    Dim url = Me.TxtURL.Text.Trim
    If Not url.StartsWith("http:") Then url = "http://" & url
    Dim ResponseStatus As System.Net.HttpStatusCode
    Dim lastModified As Date
    Try
        lastModified = RequestLastModified(url, ResponseStatus)
    Catch ex As System.Exception
        ' log and/or throw
        Throw
    End Try
    If ResponseStatus = Net.HttpStatusCode.OK Then
        Me.LblLastModified.Text = lastModified.ToString
    End If
End Sub

Public Shared Function RequestLastModified( _
    ByVal URL As String, _
    ByRef retStatus As Net.HttpStatusCode
) As Date
    Dim lastModified As Date = Date.MinValue
    Dim req As System.Net.HttpWebRequest
    Dim resp As System.Net.HttpWebResponse
    Try
        req = DirectCast(Net.HttpWebRequest.Create(New Uri(URL)), Net.HttpWebRequest)
        req.Method = "HEAD"
        resp = DirectCast(req.GetResponse(), Net.HttpWebResponse)
        retStatus = resp.StatusCode
        lastModified = resp.LastModified
    Catch ex As Exception
        Throw
    Finally
        If resp IsNot Nothing Then
            resp.Close()
        End If
    End Try

    Return lastModified
End Function

注意：许多网站都使用此属性，并仅返回当前时间。

如何查找网页的上次修改日期？

2 个答案: