ado net part iii the entity framework

... that the Entity Framework should the work of getting the related Department entity when it gets a Course entity The Department entity is then stored in the Department navigation property of the ... data using the data model and the ASP .NET EntityDataSource control The Entity Framework and ASP .NET – Getting Started © 2011 Microsoft Corporation Part 1: Overview 20 Part 2: The EntityDataSource ... Types, and then expand the Course node to see the entities and the properties within the entities In either the designer or the Model Browser pane you can see how the Entity Framework relates the objects...

Ngày tải lên: 18/10/2014, 16:24

... This code adds the Student entity created by the ASP .NET MVC model binder to the Students entity set and then saves the changes to the database (Model binder refers to the ASP .NET MVC functionality ... to work with the ASP .NET Web Forms model, see the Getting Started with the Entity Framework and Continuing with the Entity Framework tutorials Before you start, make sure you have the following ... called Then you can create a Student entity using the original values, call the Attach method with that original version of the entity, update the entity' s values to the new values, and then call...

Ngày tải lên: 20/10/2014, 14:21

... that makes them more than just items in a model diagram ■■ Entity The core of the Entity Framework is, naturally, the Entity With its ADO. NET core, you might think, incorrectly, that an entity finds ... Introducing the Entity Framework 223 Summary This chapter provided an overview of the major concepts in ADO. NET s new Entity Framework functionality Although much more complex than the ADO. NET class ... Using the Entity Framework Using a model in the Entity Framework requires four essential steps: Build the model Generate the objects Instantiate a context Run queries within the context Building the...

Ngày tải lên: 03/10/2013, 00:20

... Templates on the left side of the dialog, select the Data node This will list all the Data object templates, among them the ADO. NET Entity Data Model template Select the ADO. NET Entity Data Model ... database • NET Framework Data Provider for SQL Server (SqlClient) for the Entity Framework: Supports the Entity Framework for use with a SQL Server database The great thing about the Entity Framework ... INTRODUCING THE ADO. NET 4.0 ENTITY FRAMEWORK Back-End Support The great thing about the Entity Framework is that in essence it does not really care about the data store from which the data is...

Ngày tải lên: 18/06/2014, 17:20

... that part) : ■■ ■■ ■■ ■■ Part I: Introducing the Entity Framework This part of the book introduces you to the Entity Framework version You’ll discover what is new in this version of the Entity Framework ... xvii Part I INTRODUCING THE ENTITY FRAMEWORK Chapter Getting to know the Entity Framework Defining an entity Understanding the Entity Framework ... model of the database that the Entity Framework then creates on the database server Code first  You create an application, and the Entity Framework defines a model that it then uses to create the...

Ngày tải lên: 05/05/2014, 15:11

... http://msdn2.microsoft.com/enus/library/ms229862(vs.80).aspx Using the ASP .NET AJAX Authentication Service The ASP .NET AJAX Authentication service must be enabled in the web.config file:

Ngày tải lên: 08/08/2014, 19:20

... to it, then sends it to the next layer down the stack Once the packet reaches the bottom of the stack, it travels along the network wire to the remote host, then travels up the stack on the remote ... that the Transport Layer on the other side of the connection needs to determine what to with the packet Once the transport header is put on the packet it is given to the Internet Layer The Internet ... floor The third floor prepares the various courses by making the soup, tossing the salad, cooking the beef, and baking the pie Once all this is done they hand the food off to the fourth floor The...

Ngày tải lên: 22/10/2013, 16:15

... The connection is then open Finally, the command is executed with the ExecuteNonQuery method, with the ToString passing back the number of records that were affected to the Text property of the ... txtRecsAffected Enter the following code to the Click event btnExecute When the command is instantiated in this case, the string in the txtSQL text box is passed as the CommandText The CommandType ... might occur when working with ADO. NET In this case, the error is trapped and a message box displays the error Remember that exceptions that are not trapped will cause the application to fail How...

Ngày tải lên: 07/11/2013, 15:15

... at the top Then summary information about the packet The trace begins with the content of the detect RPC attacks like this are part of the Top Ten list (www.sans.org/topten.htm) Notice all the ... address in the pool 19 Netmask • There are 32 bits (4 bytes) of netmask • NETID (172.20), Subnet (172.20.X.0) and HOSTID (172.20.subnet.host) • Netmask tells your computer what is NETID and what ... we look at are libpcap based These include: Shadow, Snort, NetRanger and NFR Libpcap is designed to get the data from the kernel space and pass it to the application There are implementations for...

Ngày tải lên: 09/12/2013, 17:15

... form, for the -cer verbs, you need to add the cedilla on the c, and for the -ger verbs, you add the e before the ons In Chapter 3, I explain why and when the cedilla and the e are added to the present ... whether you’re waiting for them at the restaurant now, will be waiting for them later, or were waiting for them earlier? In this part, you look at how to form the many past tenses in French: the ... a hypothetical sentence A hypothetical sentence is composed of two clauses, the si (if) clause and the result clause You use the imperfect in the si clause and the conditional tense in the result...

Ngày tải lên: 08/08/2014, 10:22

... one they take is in the way they’re used If they’re followed by a direct object, then they take avoir as their auxiliary If they aren’t followed by a direct object, then they take être as their ... noon.) Put these verbs in the passé composé Don’t forget to conjugate the auxiliary être in the present and then add the past participle Remember to make sure the past participle agrees with the subject ... conjugated in the passé composé partir (to leave) je suis parti(e) nous sommes partis(es) tu es parti(e) vous êtes parti(e)(s)(es) il/elle/on est parti(e) ils/elles sont partis(es) Nous sommes partis...

Ngày tải lên: 08/08/2014, 10:22

... understanding the context so that you can choose the right tense Relying on helpful key words Although the choice of the imperfect or the passé composé depends on the context of the narration as well as the ... depending on whether they’re in the imperfect or the passé composé In the passé composé, these verbs have more of an emphasis on something that you’ve accomplished, whereas in the imperfect, they emphasize ... tense Check out the following examples in Table 13-3 Table 13-3 Descriptive Verbs in the Imperfect Infinitive Example in the Imperfect adorer (to adore) Elle adorait les pêches (She adored peaches.)...

Ngày tải lên: 08/08/2014, 10:22

... spoken to the people on the radio before appearing on television.) partir (to leave) je fus parti(e) nous fûmes partis(es) tu fus parti(e) vous fûtes parti(e)(s)(es) il/elle/on fut parti(e) ils/elles ... follow the same rules of agreement of the past participle with the passé antérieur as you with the passé composé or with any comound past tense (Check out Chapter 12 for the lowdown on the rules ... ils/elles furent partis(es) Ils furent partis avant l’ouragan (They had left before the hurricane.) Because the passé antérieur expresses an action that has taken place before the action of the passé...

Ngày tải lên: 08/08/2014, 10:22