How Can I Access and Modify Controls on One ASP.NET Page from Another?

In the asp.net across page access control

Assume that you have an element in Page1.aspx, such as

& gt; label, you want to modify it from another page (Page2.aspx). Can you access and operate this control remotely?

<h2 Solution

In ASP.NET, you can access the control by obtaining a form instance. For this, please consider the following technologies:

Step 1: Create a new project

Create a new ASP.NET Web window application in Visual Studio. Step 2: Design page1.aspx

In Page1.aspx, add a

& gt; label:

Step 3: Design Page2.aspx

<h2

In Page2.aspx (you want to modify the position of the control), add the following code to the code hidden file (.spx.cs):

<h2></h2>

<明> Explanation:

<索> Examples of the previous page (PAGE1.ASPX).

using System.Web.UI.HtmlControls;

public partial class Page2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // 获取Page1.aspx的实例
        Page1 page1 = (Page1)Page.GetPreviousPage();

        // 将其转换为HTMLControl
        HtmlGenericControl h2 = (HtmlGenericControl)page1.FindControl("test");

        // 修改InnerText属性
        h2.InnerText = "已修改的文本";
    }
}

convert to allow you to access the attribute of & gt; label.

Modify to change the text displayed in
• & gt; tags (from Page2.aspx) on Page1.aspx. Page.GetPreviousPage()
• Additional description: HtmlGenericControl <h2 InnerText
This technology can be applied to any type of server control.
• InnerText To access the control control from multiple levels, you may need to change the previous page multiple times. <h2
Using this method, you can maintain the status between different pages in web applications.

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