Web.config：指定文件位置

Question

I have a problem with web.config, I am a newbie. And i don't know how to get the filepath into btn_uploadFile_Click. Here's my web.config filepath

  <appSettings>
    <add key="IncidentPath" value="C:\Netserve\Incident\"/>
    <add key="ContractPath" value="C:\Netserve\Contract\"/>
  </appSettings>

And vb code. I don't want to use the savePath variable. I want to retrieve the folder path from web.config, and after that I want to check whether the path is valid. Is that possible? How to do that?

Protected Sub btn_uploadFile_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btn_uploadFile.Click
        Try
            Dim savePath As String = "c:\Netserve\Incident\" & Me.in01_txt_incidentNo.Text & "\"


            If Not IO.Directory.Exists(savePath) Then
                IO.Directory.CreateDirectory(savePath)
            End If
            If (FileUpload1.HasFile) Then
                ' Get the name of the file to upload.
                Dim fileName As String = FileUpload1.FileName

                While IO.File.Exists(savePath & fileName)
                    fileName = "C" & fileName
                End While


                savePath += fileName

                FileUpload1.SaveAs(savePath)

                saveFiletoDB(savePath, fileName)
            Else
                ' Notify the user that a file was not uploaded.
                ShareVar.dd_error("You did not specify a file to upload.")
            End If
        Catch ex As Exception
            ShareVar.dd_error(ex.Message)
        End Try
    End Sub 

Answer 1

1. Add a reference to System.Configuration.dll to your project (if it's not already added) and add Imports System.Configuration to your imports statements in the code behind.

2. Use ConfigurationManager.AppSettings to read the values from the <appSettings> section of the .config file