我是第一次使用 vb.net 代码，但我有 5 年的 C# 经验。
从以前的开发人员那里，我被告知服务器上的代码运行良好，没有任何错误，但是当我打开网站文件夹（网站没有解决方案文件）时，我尝试构建网站，我得到了大量错误说：
'labelControl' 未声明。由于其保护级别，它可能无法访问。
到目前为止，我打开的两个页面上的所有控件都发生了这种情况。
以下是其中一个文件的部分标记、逻辑和设计器代码：
标记：
<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/Site.Master" CodeBehind="OverriedCalcValues.aspx.vb" Inherits="Homevesters.Overried_Calc_Values" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<table cellpadding="5" border="1">
<tr>
<td class="style15"><asp:label ID="lblDoorJam1" runat="server" Font-Bold="true" Text="Door Jamb"/><br />Cost per door jamb replacement</td>
<td class="style38"><asp:label ID="lblFactorType1" runat="server" Text="$/Each"/></td>
<td class="style41"><asp:label ID="lblDoorJam" runat="server" Text=""/></td>
<td class="style32"><asp:CheckBox ID="ckDoorJam" runat="server"/></td>
<td class="style35">$<asp:TextBox ID="txtDoorJam" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style16"><asp:label ID="lblExtDoor1" runat="server" Font-Bold="true" Text="Exterior Door"/><br />Cost per exterior door replacement</td>
<td class="style39"><asp:label ID="lblFactorType2" runat="server" Text="$/Each"/></td>
<td class="style42"><asp:label ID="lblExtDoor" runat="server" Text=""/></td>
<td class="style33"><asp:CheckBox ID="ckExtDoor" runat="server"/></td>
<td class="style36">$<asp:TextBox ID="txtExtDoor" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style15"><asp:label ID="lblGarageSingle1" runat="server" Font-Bold="true" Text="Garage (1 Single)"/><br />Cost to replace one single garage door</td>
<td class="style38"><asp:label ID="lblFactorType3" runat="server" Text="$/Each"/></td>
<td class="style41"><asp:label ID="lblGarageSingle" runat="server" Text=""/></td>
<td class="style32"><asp:CheckBox ID="ckGarageSingle" runat="server"/></td>
<td class="style35">$<asp:TextBox ID="txtGarageSingle" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style16"><asp:label ID="lblGarageDouble1" runat="server" Font-Bold="true" Text="Garage (1 Double)"/><br />Cost to replace one double garage door</td>
<td class="style39"><asp:label ID="lblFactorType4" runat="server" Text="$/Each"/></td>
<td class="style42"><asp:label ID="lblGarageDouble" runat="server" Text=""/></td>
<td class="style33"><asp:CheckBox ID="ckGarageDouble" runat="server"/></td>
<td class="style36">$<asp:TextBox ID="txtGarageDouble" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style15"><asp:label ID="Label1" runat="server" Font-Bold="true" Text="Interior Door"/><br />Cost per interior door replacement</td>
<td class="style38"><asp:label ID="Label2" runat="server" Text="$/Each"/></td>
<td class="style41"><asp:label ID="lblInteriorDoor" runat="server" Text=""/></td>
<td class="style32"><asp:CheckBox ID="ckInteriorDoor" runat="server"/></td>
<td class="style35">$<asp:TextBox ID="txtInteriorDoor" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style16"><asp:label ID="Label4" runat="server" Font-Bold="true" Text="Patio Door"/><br />Cost to replace one patio door</td>
<td class="style39"><asp:label ID="Label5" runat="server" Text="$/Each"/></td>
<td class="style42"><asp:label ID="lblPatioDoor" runat="server" Text=""/></td>
<td class="style33"><asp:CheckBox ID="ckPatioDoor" runat="server"/></td>
<td class="style36">$<asp:TextBox ID="txtPatioDoor" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style15"><asp:label ID="Label3" runat="server" Font-Bold="true" Text="Patio Glass"/><br />Cost per patio glass replacement</td>
<td class="style38"><asp:label ID="Label6" runat="server" Text="$/Each"/></td>
<td class="style41"><asp:label ID="lblPatioGlass" runat="server" Text=""/></td>
<td class="style32"><asp:CheckBox ID="ckPatioGlass" runat="server"/></td>
<td class="style35">$<asp:TextBox ID="txtPatioGlass" runat="server" Text="" Width="80px" /></td>
</tr>
<tr>
<td class="style16"><asp:label ID="Label7" runat="server" Font-Bold="true" Text="Dishwasher"/><br />Cost to replace one dishwasher</td>
<td class="style39"><asp:label ID="Label8" runat="server" Text="$/Each"/></td>
<td class="style42"><asp:label ID="lblDishWasher" runat="server" Text=""/></td>
<td class="style33"><asp:CheckBox ID="ckDishwasher" runat="server"/></td>
<td class="style36">$<asp:TextBox ID="txtDishwasher" runat="server" Text="" Width="80px" /></td>
</tr>
</table>
</asp:Content>
逻辑：
Imports Homevesters
Public Class Overried_Calc_Values
Inherits System.Web.UI.Page
Dim clsValueOrganization As New clsCalcValues
Dim clsValueDefaults As New clsCalcValues
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If IsUserLoggedIn(Me) = False Then
Response.Redirect("~/Account/Login.aspx")
Exit Sub
End If
If IsPostBack = False Then
clsValueOrganization.Load("", False, Session("OrgID"))
clsValueDefaults.Load("", False, "DEFAULT")
' c is dollar format with dollar symbol
lblDoorJam.Text = clsValueDefaults.dDoorJamb.ToString("c")
lblExtDoor.Text = clsValueDefaults.dExtDoor.ToString("c")
lblGarageSingle.Text = clsValueDefaults.dGarageDoorSgl.ToString("c")
lblGarageDouble.Text = clsValueDefaults.dGarageDoorDbl.ToString("c")
lblInteriorDoor.Text = clsValueDefaults.dIntDoor.ToString("c")
lblPatioDoor.Text = clsValueDefaults.dPatioDoor.ToString("c")
lblPatioGlass.Text = clsValueDefaults.dPatioGlass.ToString("c")
lblDishWasher.Text = clsValueDefaults.dDishwasher.ToString("c")
lblFans.Text = clsValueDefaults.dFans.ToString("c")
lblLightFixtures.Text = clsValueDefaults.dLightFixture.ToString("c")
lblServicePanel.Text = clsValueDefaults.dServicePanel.ToString("c")
lblRange.Text = clsValueDefaults.dRange.ToString("c")
lblRefrigerator.Text = clsValueDefaults.dRefrigerator.ToString("c")
lblStoveTop.Text = clsValueDefaults.dStoveTop.ToString("c")
lblVentHood.Text = clsValueDefaults.dVentHoods.ToString("c")
lblElectricalWiring.Text = clsValueDefaults.dWiringReplace.ToString("c")
lblFloorCovering.Text = clsValueDefaults.dFloorCover.ToString("c")
lblTileFloor.Text = clsValueDefaults.dTileFloor.ToString("c")
lblOldHouse4150.Text = clsValueDefaults.dOldHouse1.ToString("c")
lblOldHouse2140.Text = clsValueDefaults.dOldHouse2.ToString("c")
lblOldHouse0020.Text = clsValueDefaults.dOldHouse3.ToString("c")
lblOldHouse1900.Text = clsValueDefaults.dOldHouse4.ToString("c")
ckMedWood.Checked = Not (clsValueOrganization.dMdWoodWindow = clsValueDefaults.dMdWoodWindow)
ckSmallMet.Checked = Not (clsValueOrganization.dSmMetalWindow = clsValueDefaults.dSmMetalWindow)
ckSmallPane.Checked = Not (clsValueOrganization.dSmGlassPanes = clsValueDefaults.dSmGlassPanes)
ckSmallWood.Checked = Not (clsValueOrganization.dSmWoodWindow = clsValueDefaults.dSmWoodWindow)
End If
End Sub
End Class
设计师：
'------------------------------------------------------------------------------
' <auto-generated>
' This code was generated by a tool.
'
' Changes to this file may cause incorrect behavior and will be lost if
' the code is regenerated.
' </auto-generated>
'------------------------------------------------------------------------------
Option Strict On
Option Explicit On
Partial Public Class Override_Calc_Values
'''<summary>
'''lblDoorJam1 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblDoorJam1 As Global.System.Web.UI.WebControls.Label
'''<summary>
'''lblFactorType1 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblFactorType1 As Global.System.Web.UI.WebControls.Label
'''<summary>
'''lblDoorJam control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblDoorJam As Global.System.Web.UI.WebControls.Label
'''<summary>
'''ckDoorJam control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents ckDoorJam As Global.System.Web.UI.WebControls.CheckBox
'''<summary>
'''txtDoorJam control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents txtDoorJam As Global.System.Web.UI.WebControls.TextBox
'''<summary>
'''lblExtDoor1 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblExtDoor1 As Global.System.Web.UI.WebControls.Label
'''<summary>
'''lblFactorType2 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblFactorType2 As Global.System.Web.UI.WebControls.Label
'''<summary>
'''lblExtDoor control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblExtDoor As Global.System.Web.UI.WebControls.Label
'''<summary>
'''ckExtDoor control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents ckExtDoor As Global.System.Web.UI.WebControls.CheckBox
'''<summary>
'''txtExtDoor control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents txtExtDoor As Global.System.Web.UI.WebControls.TextBox
'''<summary>
'''lblGarageSingle1 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblGarageSingle1 As Global.System.Web.UI.WebControls.Label
'''<summary>
'''lblFactorType3 control.
'''</summary>
'''<remarks>
'''Auto-generated field.
'''To modify move field declaration from designer file to code-behind file.
'''</remarks>
Protected WithEvents lblFactorType3 As Global.System.Web.UI.WebControls.Label
End Class
以下是我遇到的一些错误：
你认为这可能是什么原因？