由于其保护级别，面板无法访问 [英] Panel is inaccessible due to its protection level

问题描述

我在frist.aspx页面上有一个面板控件，我想从frist.aspx页面访问其他second.aspx页面，如下所示：

I have a panel control on frist.aspx pagewhich i want to access on other second.aspx page from frist.aspx page like following:

<asp:Panel ID="postpanel" runat="server">

我使用以下代码在second.aspx.cs上访问它

I used following code to access it on second.aspx.cs

first d = new first();
                d.postpanel.Visible = false;

但是它给出了以下错误：

first.postpanel由于其保护级别而无法访问



我尝试过：



我在frist.aspx页面上有一个面板控件，我想从frist.aspx页面访问其他second.aspx页面，如下所示：

but it gives following error:
first.postpanel is inaccessible due to its protection level

What I have tried:

I have a panel control on frist.aspx pagewhich i want to access on other second.aspx page from frist.aspx page like following:

<asp:Panel ID="postpanel" runat="server">

< br $>




我使用以下代码在second.aspx.cs上访问它

< br $> b $ b

I used following code to access it on second.aspx.cs

first d = new first();
                d.postpanel.Visible = false;

但是它给出了以下错误：

first.postpanel由于其保护级别而无法访问

but it gives following error:
first.postpanel is inaccessible due to its protection level

推荐答案

如错误所示， postpanel 被定义为受保护的成员。如果要在第一个类之外访问它，可以定义公开它的公共属性（在 first.aspx.cs 中）。类似于：

As the error says, postpanel is defined as a protected member. If you want to access it outside of the first class, you can define a public property (in first.aspx.cs) that exposes it. Something like:

public partial class first : System.Web.UI.Page
{
    // ...

    public Panel PostPanel
    {
        get { return postpanel; }
    }

    // ...
}

first d = new first();
d.PostPanel.Visible = false;

但是，正如KARTHIK班加罗尔写的那样，我认为没有任何理由这样做。

But, as KARTHIK Bangalore wrote, I don't see any reason of doing that.

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