如何在用户控件中设置属性 [英] how to set attribute in user control

问题描述

hi
i创建了一个用户控件。

进入用户控件有图像元素。

hi i created a user control.
into user control have image element.

<img id="imgNews"  src="Images/twitter-256.png"  runat="server" />

和创建的属性：

and created property:

string srcNews;

        public string SrcNews
        {
            get { return srcNews; }
            set { srcNews = value;
           
            }
        }

已经，我在我的网站上使用usercontrol。

i想要设置属性src来自我的网站的图像用户控制。

我怎么做？

already, i use usercontrol in my website .
i want set attribute src from image user control from my web site .
how i can ?

推荐答案

你应该注册的页面明智的



]]>

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明智的身体部分

Your Page you Should Register Like wise

]]>
]]>

Body Section like wise

< snp：usernews id =userNewsrunat =Serverxmlns：snp =＃unknown>

<snp:usernews id="userNews" runat="Server" xmlns:snp="#unknown">

< asp：button id =btn1runat =servertext =点击xmlns：asp =＃unknown>





codeFile有：

<asp:button id="btn1" runat="server" text="Click" xmlns:asp="#unknown">


codeFile have :

protected void Page_Load(object sender, EventArgs e)
      {
          if (Page.IsPostBack)
              userNews.SrcNews = "Chrysanthemum.jpg";
      }

usercontrol修改属性

usercontrol modify the Property

public string SrcNews
{
    get { return imgNews.Attributes["src"];}
    set { imgNews.Attributes["src"] = value;}
}

i希望此代码能够正常工作

i hope this code will work

在您的源代码中，您应该更改 SrcNews 属性如下：

In your source code you should change your SrcNews property like bellow:

public string SrcNews
{
    get { return imgNews.Attributes["src"];}
    set { imgNews.Attributes["src"] = value;}
}

您好

i有一个澄清。在访问您可以创建的属性之前该用户控件的实例并尝试访问该属性SrcNews。



Ex：

您已注册一个名为Usercontrol1的用户控件.ascx。

你明智地编写代码



Usercontrol1 objUserControl = Page.FindControl（Usercontrol1.ascx）;

objUserControl.SrcNews =;





现在您可以访问此属性。

Hi
i have one clarification.before accessing the property you could create the instance for that user control and try to access that property "SrcNews".

Ex:
you have registered one usercontrol called "Usercontrol1.ascx".
you write the code like wise

Usercontrol1 objUserControl=Page.FindControl("Usercontrol1.ascx");
objUserControl.SrcNews="";


now you may access this property.

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