linq to sql examples in c video
LinQ To Sql
... 4. Gắn nối c c câu truy vấn LINQ to SQL vào c c control LINQ to SQL C c câu truy vấn LINQ trả về kết quả mà nó sẽ implement interrface IEnumerable – đây c ng là interface mà c c control ASP.NET ... kh c nhau. LINQ to SQL Tutorial 3 M c l c Bài 1: Sử dụng LINQ to SQL 6 1. LINQ to SQL là gì? 6 2. Mô hình hóa CSDL dùng LINQ to SQL: 6 3. Tìm hiểu lớp DataContext 7 4. C c ví dụ LINQ ... hình hóa CSDL dùng LINQ to SQL: Visual Studio “Orcas” đã tích hợp thêm một trình thiết kế LINQ to SQL như một c ng c dễ dàng cho vi c mô hình hóa một c ch tr c quan c c CSDL dùng LINQ to SQL. ...
Ngày tải lên: 12/01/2013, 16:18
Chapter 6 - LINQ to SQL
... context.SubmitChanges(ConflictMode.ContinueOnConflict); } catch (ChangeConflictException) { foreach (var conflict in context.ChangeConflicts) { conflict.Resolve(RefreshMode.KeepCurrentValues); foreach (var ... Hirsch St. Bnei Brak 51202 Israel LINQ to Relational Data • LINQ to DataSet – Leveraging the existing investment • LINQ to SQL – Designer-generated mapping – Custom mapping, ORM facilities • LINQ ... operator – The LINQ to SQL query provider translates it to a WHERE on the discriminator column / /LINQ: var cars = from car in context.GetTable<Vehicle>() .OfType<Car>() select car; / /SQL: ...
Ngày tải lên: 12/01/2013, 16:18
Using LINQ to SQL
... queries that interact with data sourced from SQL Server, either directly (LINQ to Entities) or indirectly (LINQ to DataSet). LINQ to SQL, also included as a native LINQ provider within the .NET ... exists. C# decimal pending = context.AgedInvoices(whichCustomer, 90); Visual Basic Dim pending As Decimal = context.AgedInvoices(whichCustomer, 90) Dwonloaded from: iDATA.ws Chapter 20 Using LINQ to SQL 343 Summary This ... iDATA.ws Chapter 20 Using LINQ to SQL 335 C# using (SalesOrderLink context = new SalesOrderLink(connectionString)) { var results = from cu in context.Customers orderby cu.FullName select new { CustomerID...
Ngày tải lên: 03/10/2013, 00:20
Introduction to Design Patterns in C#
... Writing Windows C# Programs 47 Objects in C# 47 Managed Languages and Garbage Collection 48 Classes and Namespaces in C# 48 Building a C# Application 49 The Simplest Window Program in C# ... equal to Table 2-5: Comparison Operators in C# Combining Conditions When you need to combine two or more conditions in a single if or other logical statement, you use the symbols for the logical ... operators, to give hints to the compiler to allow it to produce more efficient code, and to reduce typing when terminals were very slow. Today, modern compilers produce identical code for both forms...
Ngày tải lên: 18/10/2013, 17:15
Tài liệu Pro LINQ Language Integrated Query in C# 2008 docx
... collections using LINQ to Objects, XML using LINQ to XML, DataSets using LINQ to DataSet, and SQL Server databases using LINQ to SQL. Rattz_789- 3C0 1.fm Page 16 Tuesday, October 2, 2007 2:29 PM CHAPTER ... LINQ namespace LINQDev.Common { public class Contact { public int Id; public string Name; public static void PublishContacts(Contact[] contacts) { // This publish method just writes them to the console ... Service-Oriented Architecture, 3e Beginning ASP.NET 3.5 Data Access, 2e Beginning C# 2008 Databases Beginning C# 2008 Pro LINQ: Language Integrated Query in C# 2008 www.apress.com SOURCE CODE ONLINE Companion eBook ...
Ngày tải lên: 18/01/2014, 03:20
Pro LINQ Language Integrated Query in C Sharp 2008 docx
... Source=.\SQLEXPRESS;Initial Catalog=Northwind"); var custs = from c in db.Customers where c. City == "Rio de Janeiro" select c; foreach (var cust in custs) Console.WriteLine("{0}", ... reasons why generics were added to C# was to give the language the ability to have data collections with static type checking. Prior to generics—barring creating your own specific collection type ... and add the using directive for the nwind namespace. ■Note You may need to change the connection string that is passed to the Northwind constructor in Listing 1-3 for the connection to be properly...
Ngày tải lên: 05/03/2014, 21:20
Introduction to Design Patterns in C# doc
... system. Characters and strings in C# are always 16 bits wide: to allow for representation of characters in non-Latin languages. It uses a character coding system called Unicode, in which thousands ... continue to the end of the current line. C# also recognizes C- style comments which begin with /* and continue through any number of lines until the */ symbols are found. / /C# single-line comment ... C# Program 34 Compiling & Running This Program 36 Arithmetic Operators 36 Increment and Decrement Operators 37 Combining Arithmetic and Assignment Statements 37 Making Decisions in C# ...
Ngày tải lên: 08/03/2014, 11:20
Introduction to Design Patterns in C# pot
... You can represent individual characters by enclosing them in single quotes: char c = ‘q’; C# follows the C convention that the white space characters (non printing characters that cause ... The Singleton Pattern 145 Creating Singleton Using a Static Method 145 Exceptions and Instances 146 Throwing the Exception 147 Creating an Instance of the Class 147 Providing a Global Point ... on the CD-ROM 62 5. Inheritance 81 Constructors 81 Drawing and Graphics in C# 82 Using Inheritance 84 Namespaces 85 Creating a Square From a Rectangle 86 Public, Private and Protected 88...
Ngày tải lên: 14/03/2014, 20:20
Pitt francis, whiteley - guide to scientific computing in c++
... . 151 10.2ConstructorsandDestructors 156 10.2.1TheDefaultConstructor 156 10.2.2TheCopyConstructor 156 10.2.3 A Specialised Constructor 157 10.2.4Destructor 157 10.3AccessingPrivateClassMembers ... from the landing gear and may have caused the retrorockets to cut out too early. J. Pitt-Francis, J. Whiteley, Guide to Scienti c Computing in C+ +, Undergraduate Topics in Computer Science, DOI 10.1007/978-1-4471-2736-9_2, ... inheritance,for instance, is so powerful when we come to explain it in Chap. 7. 1.1.2 Why You Should Write Scienti c Programs in C+ + Since you have selected a book with the words C+ +” and “Scienti c Computing” in...
Ngày tải lên: 19/03/2014, 14:12
An Introduction to Design Patterns in C++ with Qt™, 2nd Edition doc
... subdirs in the project le located in the parent directory, which would cause a Makefile to be produced in the parent directory and in each subdirectory. e s e c o n d l i n e i n c l u d ... main block On most platforms, you can compile and run this program using the ubiquitous GNU C compiler, gcc . e command to compile a C+ + program is g++ , which is a program that calls gcc ... accesses its data directly , but the variable px accesses the same data indirectly. is is why the word indirection is often used to characterize the process of accessing data through a pointer....
Ngày tải lên: 24/03/2014, 01:21
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