---
title: Defining a new page type (ASPX)
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

Each page in Kentico is of a certain type, such as page, news, product, article, etc. Every page type has its own data fields. The page type describing computer products will have fields storing the computer name, processor type, RAM size, disk size and product image.

1. Open the **Page types** application.

2. Click **New page type**. This starts the **New page type** wizard.

3. Enter the following values in **Step 1**:
   - **Page type display name**: _Computer_ (the system displays this name to users in the administration interface)
   - **Namespace**: _custom_ (namespace to distinguish your page types from the default system types that use the cms namespace)
   - **Name**: _computer_ (the identifier of the page type)

     ![Setting names for the new page type](https://docs.kentico.com/docsassets/k82tutorial/defining-a-new-page-type-aspx/New_Page_Type.png "Setting names for the new page type")

4. Click **Next**.

5. In **Step 2**, specify the name of the database table where the system stores the data of computer pages. You also need to enter the name of the table's primary key field. Leave the default values.

6. Click **Next**. The system creates a new database table for computer pages.

7. In **Step 3**, you need to define the fields of the page type (columns of the table). Click **New field** to create the following fields. For each field, enter the values, click **Save** and repeat the procedure until you have defined all the listed fields.

   - **Field name**: ComputerName
   - **Data type**: Text
   - **Size**: 200
   - **Required:** yes (checked)
   - **Field caption**: Computer name
   - **Form control**: Text box

   * **Field name**: ComputerProcessorType
   * **Data type**: Text
   * **Size**: 200
   * **Field caption**: Processor type
   * **Form control**: Drop-down list
   * **Editing control settings -> Data source**: select **List of options** and enter the following items into the text area, one per line:

     ```text

     Athlon;Athlon
     Pentium XEON;Pentium XEON
     Pentium Core 2 Duo;Pentium Core 2 Duo
     ```

   - **Field name**: ComputerRamSize
   - **Data type**: Integer number
   - **Field caption**: RAM (MB)
   - **Form control**: Text box

   * **Field name**: ComputerHddSize
   * **Data type**: Integer number
   * **Field caption**: HDD (GB)
   * **Form control**: Text box

   - **Field name**: ComputerImage
   - **Data type**: File
   - **Field caption**: Image
   - **Form control**: Upload file

   ![Defining the fields of a new page type](https://docs.kentico.com/docsassets/k82tutorial/defining-a-new-page-type-aspx/New_Page_Type_Fields.png "Defining the fields of a new page type")

8. Click **Next**.

9. In **Step 4**, choose the **ComputerName** field as the **Page name source**.

   > **Info:** This means that when a user creates a new computer page, the system automatically fills in the page name based on the **ComputerName** value. The page name appears in site navigation and in the content tree of the **Pages** application.

10. Click **Next**.

11. In **Step 5**, select the page types that will be supported as parents for computer pages in the content tree. Click **Add page types**, select the **Page (menu item)** page type and click **Select**. This means that users are only allowed to place computer pages under pages, not under articles, news items or other page types.

12. Click **Next**.

13. In **Step 6**, assign the page type to all websites where you wish to use it. Click **Add sites**, choose **My website** in the selection dialog and click **Select**.

14. Click **Next**.

15. Click **Finish** to complete the creation of the new page type.

The wizard automatically creates the database table and several default transformations.

> **Info:** **How does the system store page content?**
>
> The system stores page content and all related data in three database tables:
>
> - **CMS\_Tree** (content tree structure)
> - **CMS\_Document** (general page properties, metadata and editable region content)
> - A **dedicated page type table** - in this case _**CUSTOM\_Computer**_ (stores the values of the page type's specific fields)