language integrated query in c 2008
Tài liệu Pro LINQ Language Integrated Query in C# 2008 docx
... PublishContacts(Contact[] contacts) { // This publish method just writes them to the console window foreach(Contact c in contacts) Console.WriteLine("Contact Id: {0} Contact: {1}", c. Id, c. Name); } ... Rattz_789- 3C0 1.fm Page 10 Tuesday, October 2, 2007 2:29 PM 10 CHAPTER ■ HELLO LINQ namespace LINQDev.Common { public class Contact { public int Id; public string Name; public static void PublishContacts(Contact[] ... custs = from c in db.Customers where c. City == "Rio de Janeiro" select c; foreach (var cust in custs) Console.WriteLine("{0}", cust.CompanyName); ■Note The code in Listing 1-3 requires adding the...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 1 docx
... PublishContacts(Contact[] contacts) { // This publish method just writes them to the console window foreach(Contact c in contacts) Console.WriteLine("Contact Id: {0} Contact: {1}", c. Id, c. Name); } ... Rattz_789- 3C0 1.fm Page 10 Tuesday, October 2, 2007 2:29 PM 10 CHAPTER ■ HELLO LINQ namespace LINQDev.Common { public class Contact { public int Id; public string Name; public static void PublishContacts(Contact[] ... custs = from c in db.Customers where c. City == "Rio de Janeiro" select c; foreach (var cust in custs) Console.WriteLine("{0}", cust.CompanyName); ■Note The code in Listing 1-3 requires adding the...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 2 ppsx
... ordering ordering-directionopt ordering-direction: ascending descending select-or-group-clause: select-clause group-clause select-clause: select expression group-clause: group expression query- continuation: ... long Carter is characters long Cleveland is characters long Clinton is characters long Coolidge is characters long Eisenhower is 10 characters long Fillmore is characters long Ford is characters ... is characters long McKinley is characters long Monroe is characters long Nixon is characters long Pierce is characters long Polk is characters long Reagan is characters long Roosevelt is characters...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 3 pdf
... Source=.\SQLEXPRESS;Initial Catalog=Northwind"); var custs = (from c in db.Customers where c. City == "Rio de Janeiro" select c) Reverse(); foreach (var cust in custs) Console.WriteLine("{0}", cust.CompanyName); ... Source=.\SQLEXPRESS;Initial Catalog=Northwind"); var custs = (from c in db.Customers where c. City == "Rio de Janeiro" select c) AsEnumerable() Reverse(); foreach (var cust in custs) Console.WriteLine("{0}", cust.CompanyName); ... Reprinted Here for Convenience Is Listing 1-3 using System; using System.Linq; using System.Data.Linq; using nwind; Northwind db = new Northwind(@"Data Source=.\SQLEXPRESS;Initial Catalog=Northwind");...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 4 ppt
... element in the input sequence to be compared while searching for the minimum value in the input sequence and returning that minimum value The Third Min Prototype public static Numeric Min( ... document on the fly, using functional construction as in Listing 7-21 Listing 7-21 Creating a Declaration with Functional Construction XDocument xDocument = new XDocument(new XDeclaration("1.0", "UTF-8", ... each element in the input sequence to be compared while searching for the minimum value in the input sequence and returning that minimum value The Fourth Min Prototype public static S Min(...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 5 ppt
... XElement("BookParticipants"), procInst = new XProcessingInstruction("BookCataloger", "out-of-print")); Console.WriteLine("Before updating processing instruction:"); Console.WriteLine(xDocument); procInst.Target ... named ObjectChange of type XObjectChange indicating the type of change about to take place: XObjectChange.Add, XObjectChange Name, XObjectChange.Remove, or XObjectChange.Value XObject.Changed This ... rock climbing, meaning being excited about the prospect of going rock climbing I am merely describing the direction of traversal I am about to discuss Traversing down an XML tree is easily accomplished...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 6 ppt
... LINQ, this query can be combined into a single, more concise statement as demonstrated in Listing 8-3 Listing 8-3 A More Concise Example of Calling the First Ancestors Prototype XDocument xDocument ... Buckingham That works just as expected InDocumentOrder The InDocumentOrder operator can be called on a sequence of nodes and returns a sequence containing each source node’s child ... BookParticipant Since I am not reaching into a specific branch of the XML tree, it is necessary that I know the schema because I could get back elements from a branch I not want However, in many cases,...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 7 pptx
... is in the DataTable twice now You may be wondering, since I made such a big deal about calling the HasVersion method since the AcceptChanges method was not called, why not just call the AcceptChanges ... enumerating the second sequence of DataRow objects, removing those elements from the collection that also occur in the first sequence Lastly, it yields the remaining elements in the collection in ... of each column, and then using the IComparable interface on each column if its dynamic data type implements the IComparable interface, or calling the static Equals method in System.Object if...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 8 pps
... database records, as easily as accessing a property of the parent class Likewise, accessing a child’s parent class is as easy as accessing a property of the child class Concurrency Conflict Detection ... optimistic concurrency conflict detection If a conflict is detected, a ChangeConflictException exception is thrown Any time you call the SubmitChanges method, you should wrap that call in a try/catch ... specified user account to login to the specified database when connecting to create the entity classes /conn: /conn:"Data Source=.\SQLEXPRESS;Initial Catalog=Northwind;Integrated...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 9 ppt
... one specialized exception concerning gaining the benefits of identity tracking, change tracking, and change processing when projecting into nonentity classes This exception occurs when the class ... properties on an object, calling the DataContext object’s SubmitChanges method, and handling any concurrency conflicts that may occur Don’t let the concurrency conflict handling intimidate you, there ... Catalog=Northwind"); IQueryable custs = from c in db.Customers where c. CustomerID.TrimEnd('K') == "LAZY" select c; foreach (Customer c in custs) { Console.WriteLine("{0}", c. CompanyName); } Notice that...
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Apress pro LINQ Language Integrated Query in C# 2008 phần 10 ppsx
... Console.WriteLine("Conflict(s) occurred calling SubmitChanges(): {0}.", ex.Message); foreach (ObjectChangeConflict objectConflict in db.ChangeConflicts) { Console.WriteLine("Conflict for {0} occurred.", ((Customer)objectConflict.Object).CustomerID); ... (ObjectChangeConflict objectConflict in db.ChangeConflicts) { Console.WriteLine("Conflict for {0} occurred.", ((Customer)objectConflict.Object).CustomerID); Rattz_789- 3C1 6.fm Page 527 Thursday, October ... store ObjectChangeConflict objects Notice that an ObjectChangeConflict object has a property named Object that references the actual entity object that the concurrency conflict occurred during the...
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Pro LINQ Language Integrated Query in C Sharp 2008 docx
... PublishContacts(Contact[] contacts) { // This publish method just writes them to the console window foreach(Contact c in contacts) Console.WriteLine("Contact Id: {0} Contact: {1}", c. Id, c. Name); } ... Rattz_789- 3C0 1.fm Page 10 Tuesday, October 2, 2007 2:29 PM 10 CHAPTER ■ HELLO LINQ namespace LINQDev.Common { public class Contact { public int Id; public string Name; public static void PublishContacts(Contact[] ... custs = from c in db.Customers where c. City == "Rio de Janeiro" select c; foreach (var cust in custs) Console.WriteLine("{0}", cust.CompanyName); ■Note The code in Listing 1-3 requires adding the...
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Tài liệu LinQ, language Integrated Query (file ppt) pptx
... var query = from customer in db.Customers where customer.City == "Paris” select customer; Lệnh truy vấn khai báo, chưa th c chạy foreach (var Customer in query) { Console.WriteLine(Customer.CompanyName); ... ví dụ LINQ to XML C n copy file cd_catalog.xml contacts.xml thư m c C:\\ DLINQ: ví dụ LINQ to SQL C n c i MS-SQL 2005 với database AdventureWorks Northwind MbUnit: xem project TestXLINQ solution ... Partitioning Skip, SkipWhile, Take, TakeWhile Quantifiers All, Any, Contains Restriction Where Selection Select, SelectMany Set Concat, Distinct, Except, Intersect, Union http://msdn.microsoft.com/en-us/vcsharp/aa336746.aspx...
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Language Integrated Query potx
... HO CHI MINH UNIVERSITY OF INDUSTRY Basic concepts & Types LinQ Basic concepts LINQ requirements Concepts Types LINQ to objects LINQ to SQL LINQ to Entity LINQ to XML HO CHI MINH ... MyExtensionMethod { public static int SumFrom1toN(this int n) {… } public static string NoiChuoi(this string s1, string s2){…} public static void ChangeColorToRed(this Button btn) { btn.BackColor = Color.Red; ... Generics The creation of various types of collection Type safety Binary Code Reuse using System.Collections.Generic; List intS = new List(); intS.Add(113); intS.Add(114); int nAt...
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Beginning ASP.NET 3.5 in C# 2008. ppt
... Chapter introduces you to C# 2008 with a comprehensive language tour Finally, Chapter explains the basics of modern object-oriented programming Part 2: Developing ASP.NET Applications The second ... was being wedged into all sorts of unusual places, including mission-critical business applications and highly trafficked e-commerce sites Because ASP wasn’t designed with these uses in mind, ... 825 Caching and the Query String 826 Caching with Specific Query String Parameters 827 A Multiple Caching Example ...
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WPF recipes in C# 2008
... xaml.cs, which contains the Application object’s code-behind; the Window1.xaml file, which contains the markup for the application’s main window; and Window1.xaml.cs, which contains the window’s code-behind ... following code listing The Code The following code defines a simple System.Windows.Window that contains a few controls In the window’s code-behind, an attached property is defined with SystemWindows.UIElement ... ResourceDictionary into any other ResourceDictionary How It Works The ResourceDictionary.MergedDictionaries property gets a System.Collections.ObjectModel Collection, containing...
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Building CMS E-Commerce Project using ASP.NET 3.5 in C# 2008 and SQLServer 2005 - Chương 2 pps
... Building CMS / E-Commerce Project using ASP.NET 3.5 in C# 2008 and SQLServer 2005 GVHD: Dương Ng c Long Nam – longnamit@yahoo.com Page 23 Building CMS / E-Commerce Project using ASP.NET 3.5 in C# ... m c "Controls" cho project Right-click project : KimSoft Chọn : Add Folder Regular folder Đặt tên : Controls 19 Tạo Web User Control ThemeSelector Right-click thư m c : Controls Chọn ... KimSoft.UI.Controls GVHD: Dương Ng c Long Nam – longnamit@yahoo.com Page 18 Building CMS / E-Commerce Project using ASP.NET 3.5 in C# 2008 and SQLServer 2005 22 Tạo thư m c App_Code: Right-click project...
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Building CMS / E-Commerce Project using ASP.NET 3.5 in C# 2008 and SQLServer 2005.Chương 3 docx
... longnamit@yahoo.com Page Building CMS / E-Commerce Project using ASP.NET 3.5 in C# 2008 and SQLServer 2005 // Trả Cache protected static Cache Cache { get { return HttpContext.Current.Cache; } } //Lấy ... _connectionString = value; } } //Thu c tính EnableCaching(true, false) cho phép Caching hay không private bool _enableCaching = true; protected bool EnableCaching { get { return _enableCaching; ... (abstract class) /// public abstract class DataAccess { //Thu c tính chuỗi kết nối private string _connectionString = ""; protected string ConnectionString { get { return _connectionString;...
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pro silverlight 2 in c# 2008
... public Page() { InitializeComponent(); cmdClickMe.Click += cmdClickMe_Click; } www.it-ebooks.info 9497ch01.qxd 10/10/08 12:29 PM Page CHAPTER ■ INTRODUCING SILVERLIGHT The code approach is useful ... event, you add the Click attribute to the Button element, and set it to the name of a method in your code: ... here: cmdClickMe.Click -= cmdClickMe_Click; It is technically possible to connect the same event handler to the same event more than once This is almost always the result of a coding mistake (In...
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