If Vars("用户管理") = "增加用户" Then

    

    Dim username As WinForm.TextBox = e.Form.Controls("用户名").value

    Dim password As WinForm.TextBox = e.Form.Controls("密码").value

    Dim usergroup As WinForm.ComboBox = e.Form.Controls("属性").value

    Dim cmd As New SQLCommand

    cmd.C

    If username = "" OrElse usergroup = "" Then

        Messagebox.show("请输入用户名和用户分组!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)

        Return

    End If

    cmd.CommandText = "Insert Into {用户表} ([用户名],[属性],[密码]) Values (\'"

    cmd.CommandText = cmd.CommandText & username & "\',\'" & usergroup & "\',\'" & password & "\')"

    If cmd.ExecuteNonQuery = 1 Then \'返回1表示增加成功

        With Forms("用户管理").Controls("ListBox1")

            .Items.Add(username)

            .SelectedIndex = .Items.Count -1

        End With

    Else

        Messagebox.show("增加用户失败, 可能存在同名用户!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)

    End If

    

End If

代码保存时显示编译错误：重载决策失败，原因是没有可访问的“=“可以调用这些参数，错误代码是标黄代码。