asp.net传递字符串变量到用户控件 [英] asp.net passing string variable to a user control

问题描述

我想后面的变量code的值传递给像一个用户控件：

I am trying to pass value of a code behind variable to a user control like:

<pv1:ShowPdf ID="ShowPdf2" runat="server" BorderStyle="Inset" BorderWidth="2px" FilePath='<%=path2%>'
        Height="700px" Width="856px" />

其中，路径2是code声明背后一个受保护的字符串变量。
问题在于PATH2的值不被传递到文件路径。什么是我作出了错误？
简单地做与LT;％=路径2％>给我的页面上的路径2变量的正确值。
任何帮助将是最AP preciated。

where path2 is a protected string variable declared in code behind. The problem is that the value of path2 is not being passed to the FilePath. What is the mistake I am making? Simply doing <%=path2%> gives me correct value of the path2 variable on the page. Any help will be most appreciated.

-
阿里

-- Ali

推荐答案

使用＆LT;％= 是一样的使用的Response.Write（字符串）。这发生在生命周期的，当你ShowPdf控制正在建造和属性初始化比不同点 - 晚得多。尝试，而不是使用＆LT;％＃，其中规定的DataBind过程中的价值。您可能需要的CreateChildControls或者路径2 被赋予一种价值其他一些方法来调用DataBind你的页面。

Using <%= is the same as using Response.Write(string). This happens at a different point in the lifecycle than when your ShowPdf control is being built and properties being initialized - much later. Try instead using <%#, which sets the value during DataBind. You may need to call DataBind on your Page in CreateChildControls or some other method where path2 is being given a value.

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