qr code generator c# code project ChAPTER 12 in C#.NET

Make QR Code in C#.NET ChAPTER 12

778 ChAPTER 12
QR Encoder In Visual C#
Using Barcode creation for VS .NET Control to generate, create QR Code JIS X 0510 image in VS .NET applications.
www.OnBarcode.com
Recognize QR-Code In Visual C#.NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Working with Data Source Controls and Data-Bound Controls
Encoding Bar Code In C#.NET
Using Barcode creator for .NET framework Control to generate, create bar code image in .NET applications.
www.OnBarcode.com
Reading Bar Code In Visual C#.NET
Using Barcode reader for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Figure 12-32 shows the results. Notice that the attempt to edit the first record failed. You can see the asterisk next to the ProductName field. This is because this field cannot be blank, as defined in the model. You can further customize this page to use even more features from Dynamic Data.
Quick Response Code Creator In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
www.OnBarcode.com
Painting QR Code 2d Barcode In VS .NET
Using Barcode printer for VS .NET Control to generate, create QR Code JIS X 0510 image in VS .NET applications.
www.OnBarcode.com
FigURE 12-32 Dynamic Data being used on a standard webpage.
QR Code Encoder In Visual Basic .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Denso QR Bar Code image in .NET applications.
www.OnBarcode.com
Painting GTIN - 12 In C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create UCC - 12 image in .NET framework applications.
www.OnBarcode.com
Quick Check
EAN / UCC - 14 Creator In Visual C#
Using Barcode creator for .NET Control to generate, create EAN128 image in .NET applications.
www.OnBarcode.com
PDF417 Creator In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create PDF-417 2d barcode image in VS .NET applications.
www.OnBarcode.com
1 . What data models can you use with Dynamic Data 2. Where do you register your data model with the site s MetaModel 3. Which of the data annotation classes would you use to define metadata to
Print Code 128 In C#.NET
Using Barcode drawer for .NET Control to generate, create USS Code 128 image in Visual Studio .NET applications.
www.OnBarcode.com
GS1 - 8 Drawer In C#.NET
Using Barcode encoder for .NET Control to generate, create European Article Number 8 image in .NET applications.
www.OnBarcode.com
change the display format of a property
Create DataMatrix In None
Using Barcode maker for Microsoft Excel Control to generate, create ECC200 image in Microsoft Excel applications.
www.OnBarcode.com
EAN128 Generation In Java
Using Barcode drawer for Java Control to generate, create UCC.EAN - 128 image in Java applications.
www.OnBarcode.com
Quick Check Answers
Decode UCC.EAN - 128 In Visual C#
Using Barcode recognizer for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
PDF-417 2d Barcode Reader In Visual C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
1 . Dynamic data must use a data model based on DataContext or ObjectContext.
Bar Code Recognizer In .NET
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
www.OnBarcode.com
Paint PDF-417 2d Barcode In Java
Using Barcode generator for Android Control to generate, create PDF417 image in Android applications.
www.OnBarcode.com
This includes LINQ to SQL classes and ADO.NET Entity Framework models.
Make USS Code 39 In Java
Using Barcode generation for Java Control to generate, create Code 39 Extended image in Java applications.
www.OnBarcode.com
Paint DataMatrix In None
Using Barcode creator for Online Control to generate, create Data Matrix 2d barcode image in Online applications.
www.OnBarcode.com
2. You register your data context inside the Global.asax file. 3. You would use the DisplayFormatAttribute.
Lesson 3: Working with ASP.NET Dynamic Data
ChAPTER 12
Pr ActIcE
Creating a Dynamic Data Website
In this practice, you create a Dynamic Data website and edit the default routing.
oN the CoMpaNIoN MedIa
If you encounter a problem completing an exercise, you can find the completed projects in the samples installed from this book s companion CD. For more information about the project files and other content on the CD, see Using the Companion Media in this book s Introduction.
E xErcIsE Creating a Dynamic Data Website and an Entity Model
In this exercise, you create a new Dynamic Data website, add a database to the site, and define an Entity Data Model. You then configure the site to work with the model and customize the routing.
1. 2. 3.
Open Visual Studio and create a new ASP.NET Dynamic Data Entities Web Site. Name the site DynamicDataLab. Select your preferred programming language. Add the northwnd.mdf file to your App_Data directory. You can copy the file from the samples installed from the CD. Add an ADO.NET Entity Data Model to your site. Name the model northwind.edmx. When prompted, allow Visual Studio to add this to your App_Code directory. Use the Entity Data Model Wizard to connect to all tables in the database; use the default settings throughout the wizard. Open the Global.asax file. Inside RegisterRoutes, uncomment the line that calls RegisterContext. Change this code to register your new entity model and set ScaffoldAllTables to true. Your code should look as follows.
Sample of Visual Basic Code VB DefaultModel.RegisterContext(GetType(northwndModel.northwndEntities), _ New ContextConfiguration() With {.ScaffoldAllTables = True}) Sample of C# Code DefaultModel.RegisterContext(typeof(northwndModel.northwndEntities), new ContextConfiguration() { ScaffoldAllTables = true });
Run the application and view the results. Select Products. Click to edit a product. Notice the URL routing. On the product editing page, clear the name field and click update. Notice the validation that is displayed.
780 ChAPTER 12
Working with Data Source Controls and Data-Bound Controls
Return to the Global.asax file to enable routing to ListDetails.aspx. This page allows you to edit a row directly in the GridView as well as in a DetailsView on the same page. To enable row editing, comment out the routes.Add call for {table}/{action}. Then uncomment both routes.Add calls at the bottom of the method. Notice that these routes indicate that the List and Details actions should route to ListDetails.aspx. This page handles all other actions inline with the page. Rerun the site. Select the Products table. Notice the new URL. Click the Edit link for a product in the GridView control. Notice the inline editing and data validation.
Lesson Summary
There are two Dynamic Data website templates in ASP.NET: one for working with the Entity Framework and one for working with LINQ to SQL models. Both create a set of page and field template files inside the DynamicData folder. Both allow you to connect your data context to the site inside the Global.asax file. You can use the System.Web.Routing inside the Global.asax file to indicate how your Dynamic Data site maps entity requests and actions formatted in a URI to page templates. You use partial classes to extend the metadata of your data context. This metadata includes attributes from the DataAnnotations namespace that define display formatting properties and validation rules. You can write additions to the OnChanging partial methods from your data context model to extend individual properties to include additional business logic. You can create custom field templates that change how properties are displayed and edited. These field templates inherit from FieldTemplateUserControl. You apply a custom field template as metadata to a property in your partial entity class by using the UIHintAttribute. You can create custom page templates that are entity specific inside the CustomPages folder. You add a folder with the same name as your entity. You then define custom action pages such as List.aspx and Edit.aspx. You can use the EnableDynamicData method of the data view controls (such as GridView) to add Dynamic Data features to existing websites that do not contain the standard scaffolding.
Copyright © OnBarcode.com . All rights reserved.