Standard Query Operators in C#.NET

Generator PDF-417 2d barcode in C#.NET Standard Query Operators
Standard Query Operators
Draw PDF417 In C#
Using Barcode maker for VS .NET Control to generate, create PDF417 image in Visual Studio .NET applications.
new Employee(){ Name="Mark Michaelis", Title="Chief Computer Nerd", DepartmentId = 0}, new Employee(){ Name="Michael Stokesbary", Title="Senior Computer Wizard", DepartmentId=2}, new Employee(){ Name="Brian Jones", Title="Enterprise Integration Guru", DepartmentId=2}, new Employee(){ Name="Jewel Floch", Title="Bookkeeper Extraordinaire", DepartmentId=1}, new Employee(){ Name="Robert Stokesbary", Title="Expert Mainframe Engineer", DepartmentId = 3}, new Employee(){ Name="Paul R Bramsman", Title="Programmer Extraordinaire", DepartmentId = 2}, new Employee(){ Name="Thomas Heavey", Title="Software Architect", DepartmentId = 2}, new Employee(){ Name="John Michaelis", Title="Inventor", DepartmentId = 4} }; }
Drawing Barcode In C#
Using Barcode printer for .NET framework Control to generate, create bar code image in .NET framework applications.
class Program { static void Main() { IEnumerable<Department> departments = CorporateDataDepartments; Print(departments); ConsoleWriteLine(); IEnumerable<Employee> employees = CorporateDataEmployees; Print(employees); }
PDF417 Encoder In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create PDF 417 image in ASP.NET applications.
14: Collection Interfaces with Standard Query Operators
Generating PDF 417 In VS .NET
Using Barcode creation for VS .NET Control to generate, create PDF-417 2d barcode image in VS .NET applications.
private static void Print<T>(IEnumerable<T> items) { foreach (T item in items) { ConsoleWriteLine(item); } } }
Drawing PDF-417 2d Barcode In Visual Basic .NET
Using Barcode maker for .NET framework Control to generate, create PDF 417 image in VS .NET applications.
OUTPUT 147:
Printing Bar Code In Visual C#.NET
Using Barcode maker for .NET Control to generate, create bar code image in .NET framework applications.
Corporate Finance Engineering Information Technology Research Marketing Mark Michaelis (Chief Computer Nerd) Michael Stokesbary (Senior Computer Wizard) Brian Jones (Enterprise Integration Guru) Jewel Floch (Bookkeeper Extraordinaire) Robert Stokesbary (Expert Mainframe Engineer) Paul R Bramsman (Programmer Extraordinaire) Thomas Heavey (Software Architect) John Michaelis (Inventor)
Barcode Encoder In C#
Using Barcode printer for .NET framework Control to generate, create barcode image in Visual Studio .NET applications.
We will use the same data within the following section on joining data
Draw Code 39 Extended In Visual C#.NET
Using Barcode generation for VS .NET Control to generate, create Code 39 image in Visual Studio .NET applications.
Performing an Inner Join with Join() In the world of objects on the client side, relationships between objects are generally already set up For example, the relationship between files and the directories in which they lie are preestablished with the DirectoryInfoGetFiles() method and the FileInfoDirectory method Frequently, however, this is not the case with data being loaded from nonobject stores Instead, the data needs to be joined together so you can navigate from one type of object to the next in a way that makes sense for the data Consider the example of employees and company departments In Listing 1419, we join each employee to his or her department and then list each employee with his or her corresponding department Since each employee belongs to only one (and exactly one) department, the total number of items in the list is equal to the total number of employees each employee appears only once (each employee is said to be normalized) Output 148 follows
Code 128C Printer In C#
Using Barcode generator for Visual Studio .NET Control to generate, create Code 128B image in VS .NET applications.
Standard Query Operators
Paint Data Matrix In C#.NET
Using Barcode generator for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET applications.
Listing 1419: An Inner Join Using SystemLinqEnumerableJoin()
Make Barcode In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create barcode image in ASP.NET applications.
using System; using SystemLinq; // Department[] departments = CorporateDataDepartments; Employee[] employees = CorporateDataEmployees; var items = employeesJoin( departments, employee => employeeDepartmentId, department => departmentId, (employee, department) => new { employeeId, employeeName, employeeTitle, Department = department }); foreach (var item in items) { ConsoleWriteLine("{0} ({1})", itemName, itemTitle); ConsoleWriteLine("\t" + itemDepartment); } //
Print Code 128 Code Set A In .NET
Using Barcode encoder for ASP.NET Control to generate, create Code128 image in ASP.NET applications.
OUTPUT 148:
Barcode Reader In .NET
Using Barcode reader for .NET Control to read, scan read, scan image in .NET framework applications.
Mark Michaelis (Chief Computer Nerd) Corporate Michael Stokesbary (Senior Computer Wizard) Engineering Brian Jones (Enterprise Integration Guru) Engineering Jewel Floch (Bookkeeper Extraordinaire) Finance Robert Stokesbary (Expert Mainframe Engineer) Information Technology Paul R Bramsman (Programmer Extraordinaire) Engineering Thomas Heavey (Software Architect) Engineering John Michaelis (Inventor) Research
Paint GS1-128 In Java
Using Barcode generator for Java Control to generate, create UCC.EAN - 128 image in Java applications.
14: Collection Interfaces with Standard Query Operators
Painting Barcode In VS .NET
Using Barcode printer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
The first parameter for Join() has the name inner It specifies the collection, departments, employees joins to The next two parameters are lambda expressions that specify how the two collections will connect employee => employeeDepartmentId (with a parameter name of outerKeySelector) identifies that on each employee the key will be DepartmentId The next lambda expression, (department => departmentId) specifies the Department s Id property as the key In other words, for each employee, join a department where employeeDepartmentId equals departmentId The last parameter, the anonymous type, is the resultant item that is selected In this case, it is a class with Employee s Id, Name, and Title as well as a Department property with the joined department object Notice in the output that Engineering appears multiple times once for each employee in CorporateData In this case, the Join() call produces a Cartesian product between all the departments and all the employees such that a new record is created for every case where a record exists in both collections and the specified department IDs are the same This type of join is an inner join The data could also be joined in reverse such that department joins to each employee so as to list each department-to-employee match Notice that the output includes more records than there are departments because there are multiple employees for each department and the output is a record for each match As we saw before, the Engineering department appears multiple times, once for each employee The code in Listing 1420 and Output 149 is similar to that in Listing 1419, except that the objects, Departments and Employees, are reversed The first parameter to Join() is employees, indicating what departments joins to The next two parameters are lambda expressions that specify how the two collections will connect: department => departmentId for departments and employee => employeeDepartmentId for employees Just like before, a join occurs whenever departmentId equals employeeEmployeeId The final anonymous type parameter specifies a class with int Id, string Name, and Employee Employee properties
Bar Code Drawer In Visual Studio .NET
Using Barcode maker for .NET framework Control to generate, create bar code image in VS .NET applications.
Listing 1420: Another Inner Join with SystemLinqEnumerableJoin()
Print USS-128 In Visual Studio .NET
Using Barcode generator for ASP.NET Control to generate, create EAN / UCC - 14 image in ASP.NET applications.
using System; using SystemLinq;
Make Barcode In Visual Basic .NET
Using Barcode encoder for .NET Control to generate, create bar code image in .NET framework applications.
Drawing UCC - 12 In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create UPC Code image in ASP.NET applications.