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我一直试图连接asp.net Webform aspx.vb与SQL服务器,但问题是当我写这个代码Dim cn As New SqlConnection(con)
它错误con
,我尝试找出为什么它不起作用。我无法连接asp.net VB与SQL Server
错误消息
con is not declared it may inaccessible sue to its protection level
我的web.config代码
<connectionStrings>
<add name="connection"
connectionString="Data Source=HOUCHANDARA;Initial Catalog=website;Integrated Security=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
我的模块代码
Imports System.Configuration
Public Module Connection
Public con As String = ConfigurationManager.ConnectionStrings("connection").ConnectionString
End Module
我aspx.vb代码
Imports System.Data.SqlClient
Public Class HomePage
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
Dim cn As New SqlConnection(con)
If Not IsPostBack Then
Try
cn.Open()
MsgBox("connect")
Catch ex As Exception
MsgBox("faild")
End Try
End If
End Sub
End Class
包含您在con上收到的错误消息。 – 2015-02-11 15:11:01
一旦你弄清楚了如何打开你的连接,你需要在代码中添加一个FINALLY块来关闭和销毁连接对象,以便将连接释放回池中。 – 2015-02-11 15:12:45
而错误是?捕获异常而不显示错误消息有点无用。另外,请记住,当您在IIS上下文中运行此代码时,当前用户是用于启动IIS服务的用户。它需要有权限来打开Sql Server – Steve 2015-02-11 15:12:56