我用VB.net做了个注册表连接到SQL的数据库，可是有问题说conn.open()打不开，谁能帮我解决一下，急急急 …

代码如下： Protected Sub btnRegist_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRegist.Click Dim conn As New SqlConnection conn.ConnectionString = "Data Source =.;Initial Catalog=buy; Integrated Security = true " conn.Open() Dim ds As New DataSet Dim sql As String sql = "select * from userinfo" Dim da As New SqlDataAdapter(sql, conn) da.Fill(ds, "userinfo") Dim dt As DataTable dt = ds.Tables("userinfo") Dim dr As DataRow dr = dt.NewRow() dr("username") = Txtname.Text dr("userpassw") = txtPwd.Text If rblGender.SelectedValue = "男" Then dr("sex") = "男" Else dr("sex") = "女" End If dt.Rows.Add(dr) Dim cb As SqlCommandBuilder cb = New SqlCommandBuilder(da) da.InsertCommand = cb.GetInsertCommand da.Update(ds, "userinfo") ds.AcceptChanges() End Sub