我想从代码中获取属性值

I have a case that I need to set the Text property for an asp label in the aspx page not from code behind. More exactly, I need to set a value to asp control in aspx page and this value is set by a property in the same page code behind.

我有一个案例，我需要在aspx页面中为asp标签设置Text属性，而不是从后面的代码。更确切地说，我需要在aspx页面中为asp控件设置一个值，并且该值由后面相同页面代码中的属性设置。

so I need to use an expression to do that like:

所以我需要使用表达式来做到这一点：

<asp:Label Text="<%= MyProperty %>" ..../>

I use:

我用：

<%= MyProperty %> doesn't work.
<%# MyProperty %> doesn't also.

3 个解决方案

#1

Default.aspx.cs

public partial class _Default : System.Web.UI.Page
{
    public string CustomTitle = "This Is Title";

    protected void Page_Load(object sender, EventArgs e)
    {
        Page.DataBind();
    }
}

Default.aspx

Default.aspx的

<asp:Label Text='<%#CustomTitle %>' runat="server" />

#2

You have to treat regular HTML and WebControls differently:

您必须以不同方式处理常规HTML和WebControl：

regular HTML:

常规HTML：

Using <%= ... %> is sufficient:

使用<％= ...％>就足够了：

<span><%= MyProperty %></span>

WebControls (stuff starting with <asp:...>):

WebControls（以开头的东西）：：...>

<asp:Label Text='<%# MyProperty %>' />

In this case, you also have to call Me.DataBind() (VB) or this.DataBind(); (C#) in your codebehind, since <%# ... %> are data binding expressions.

在这种情况下，您还必须调用Me.DataBind（）（VB）或this.DataBind（）;代码隐藏中的（C＃），因为<％＃...％>是数据绑定表达式。

#3

Page.DataBind();

Do you call this in your code? It binds all variables set in code to your page.

你在代码中叫这个吗？它将代码中设置的所有变量绑定到您的页面。

#1