ASP. NET basics 02 _ topic and master

 

Use of master pages

In

You can add a master on this template page,

 <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"></asp:ContentPlaceHolder>

 

This server control adds content for the subpage,

 

Right-click the template page to add a subpage. In the subpage

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"></asp:Content>

 

This control corresponds to the ContentPlaceHolder control in the master. The ID of ContentPlaceHolderID must be consistent with the ID of ContentPlaceHolder on the master page.

Note the priority of page execution.

 

 

 

About the TreeView Control

Right-click Add new item, add the Web. sitemap file for it, and then add the SiteMapDataSource data to provide the control.

The SiteMapDataSource control automatically searches for the Web. sitemap file and then provides data. It is mostly used for navigation.

 

 

 

Theme)

The folder is already distributed to a single topic. The folder name is the topic name.

Topic files are generally files with the skin suffix. The App_Themes file will be created to store all style files here.

Header label

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" Theme="" StyleSheetTheme="Blue" %>

 

Theme uses the Theme file, and StyleSheetTheme uses the Theme file. The application methods are basically the same.

The main difference between the two is that the call priority is different.
If Theme is set to red and StyleSheetTheme is set to blue, the Theme style is displayed. This is the difference.

The loading order is the merge of the last three.

 

Principle: change the style Link (css) in the head tab of the page during running)

 

You can change theme: Page. Theme = "value" in the PreInit event of the Page ";