why we use @Master type?

if we have a master page and a content page.so the content page @Page directive look like as

<%@ Page Language="C#" MasterPageFile="~/Site1.Master" .... />

so , in order to access master page controls in content page we should have to use
<%@ MasterType VirtualPath="~/Site1.Master" %>

so , my question is this why we use @MasterType directive when we already define in the @page directive that this content page is in the master page (here — Site1.Master)

Answers:

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Method 1

From Microsoft Docs you are defining the type of the Master property, which allows you to access the properties of your MasterPage derived class.

Provides a way to create a strongly typed reference to the ASP.NET master page when the master page is accessed from the Master property.

As an example:

this.Master.SomePublicPropertyOfMaster = Value;

Method 2

Specifying the @ MasterType directive with a type of MyMasterPage results in the following property definition in the code behind class:

public new MyMasterPage Master {
  get {
    return ({MyMasterPage})base.Master;
  }
}

This property definition is created by the BuildMiscClassMembers method of the TemplateControlCodeDomTreeGenerator class.


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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