vb.net winform 运行时“创建窗体出错”，毕业答辩在即，急等良策

[itzyx]

 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim myConnection As New SqlConnection("Data Source=ZYX-PC;Initial Catalog=tongrentang;Integrated Security=True")
        Dim strSql As String
        strSql = "select username,password from login where username='" & Me.TextBox1.Text & "' and password='" & Me.TextBox2.Text & "'"
        Dim myAdapter As New SqlDataAdapter(strSql, myConnection)
        Dim myDataset As New DataSet
        myAdapter.Fill(myDataset, "user")
        If myDataset.Tables("user").Rows.Count = 0 Then
            MsgBox("用户名或密码错误！")
            Me.TextBox1.Text = ""
            Me.TextBox2.Text = ""
            Me.TextBox1.Focus()
        Else
            Dim f2 As New Form2()
            Me.Hide()
            f2.Show()
        End If
    End Sub

注：代码和图片如上，是一个登录界面，然后输入用户名、密码后切换到form2窗体，今天添加了一个新的form39窗体后，保存运行时，却出现了上述错误，以前一两个月来，登录切换到form2从来没有什么问题，毕业设计审查在即，急啊...........

[ccccffff]

Form2本身有问题

[Ever_lover]

......这个问题百度去吧