CourseData Class in VS .NET

Generation QR Code ISO/IEC18004 in VS .NET CourseData Class
Listing 15-7 CourseData Class
QR Code Encoder In .NET
Using Barcode generator for ASP.NET Control to generate, create QR Code 2d barcode image in ASP.NET applications.
using System; using SystemCollections; using SystemData; using SystemDataSqlClient; using CourseManagementEntities; namespace CourseManagementData { public class CourseData { private string connectionString; public CourseData(string connectionString) { thisconnectionString = connectionString; } public void AddCourse(Course course) { SqlConnection connection = new SqlConnection(connectionString);
Encode Bar Code In VS .NET
Using Barcode generator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
SqlCommand command = CommandHelperGetInsertCourseCommand(); commandConnection = connection; commandParameters["@CourseId"]Value = courseId; commandParameters["@Number"]Value = courseNumber; commandParameters["@Title"]Value = courseTitle; commandParameters["@DefaultLength"]Value = courseDefaultLength; commandParameters["@Active"]Value = courseActive; connectionOpen(); try { commandExecuteNonQuery(); } finally { connectionClose(); } } public ArrayList GetActiveCourses(Category category) { SqlConnection connection = new SqlConnection(connectionString);
Create QR In C#.NET
Using Barcode creator for .NET framework Control to generate, create QR Code ISO/IEC18004 image in .NET applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
QR-Code Encoder In .NET Framework
Using Barcode printer for VS .NET Control to generate, create Quick Response Code image in VS .NET applications.
SqlCommand command = CommandHelperGetActiveCoursesCommand(); commandConnection = connection; commandParameters["@CategoryId"]Value = categoryId; connectionOpen(); ArrayList courses = new ArrayList(); SqlDataReader reader = commandExecuteReader( CommandBehaviorCloseConnection); try { while (readerRead()) { Guid id = readerGetGuid(0); string number = readerGetString(1); string title = readerGetString(2); int length = readerGetInt32(3); byte[] timestamp = (byte[])reader[4]; Course c = EntityCreatorCreateCourse( category, number, title, length, id, timestamp); coursesAdd(c); } } finally { readerClose(); } return courses; } // } }
Quick Response Code Creation In VB.NET
Using Barcode printer for .NET Control to generate, create Quick Response Code image in Visual Studio .NET applications.
Data Access Application Blocks
Code 3/9 Generator In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create Code 3/9 image in ASP.NET applications.
[4] Instead of directly using ADONET, you can use the Data Access Application Block, which helps reduce your code
Paint Barcode In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
DataMatrix Encoder In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create DataMatrix image in ASP.NET applications.
CourseManagementControlServiced Components
Painting EAN / UCC - 13 In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
This section examines the next project, CourseManagementControl This project contains the serviced components of the Cool Training solution Figure 15-7 shows a few of the serviced components: QueryCourseControl, UpdateCourseControl, and UpdateCourseDateControl Reading and writing course data is separated into two different components QueryCoursecontrol and ( [5] UpdateCourseControl) because there are different transactional requirements Both of these classes, however, make use of the same class CourseData [6] to read and write courses from the database
Print EAN 128 In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create GTIN - 128 image in ASP.NET applications.
Figure 15-7 Serviced component classes
Encode Code 128 Code Set B In VS .NET
Using Barcode creator for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
[View full size image]
Print USS Code 93 In VS .NET
Using Barcode generation for ASP.NET Control to generate, create USS 93 image in ASP.NET applications.
As you can see in the figure, all the serviced component classes implement their specific interface UpdateCourseControl also makes use of the serviced component UpdateCourseDataControl, because it might be necessary to add or update course dates along with Course
Recognize Code 128 In Visual Studio .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
Barcode Printer In VS .NET
Using Barcode creator for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
objects The implementation of UpdateCourseControl is shown in Listing 15-8 The class UpdateCourseControl implements the interface IUpdateCourse, which defines a single method AddOrUpdateCourse that is used to insert or modify a course in the database The attributes that are assigned to the class define the transactional behavior of the class (TRansactionOptionRequired), the connection string to the database (ConstructionEnabled), and how it is allowed to invoke the methods of the serviced component The role Course Admin is allowed to add new courses and modify existing ones, whereas the role Course Assistant is only allowed to modify courses Because adding new courses and modifying existing ones is done in the same method, both roles are assigned to the class; inside the implementation, roles other than Course Admin are denied access by checking the role with ContextUtilIs-CallerInRole An UnauthorizedAccessException is thrown if this is not the case The properties IsNew and IsModified are used to check whether the courses must be added anew or whether existing courses should be modified This decides whether courseDataAddCourse or courseDataUpdateCourse is called For every course date associated with the course, the serviced component UpdateCourseDateControl does the insert or update of the course date
Encoding UCC - 12 In Java
Using Barcode printer for Java Control to generate, create GS1 - 12 image in Java applications.
Listing 15-8 UpdateCourseControl Class
Make Bar Code In Visual Basic .NET
Using Barcode drawer for .NET Control to generate, create barcode image in .NET framework applications.
using System; using SystemCollections; using SystemEnterpriseServices; using CourseManagementData; using CourseManagementEntities; namespace CourseManagementControl {
Data Matrix Creation In Java
Using Barcode drawer for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
public interface IUpdateCourse { void AddOrUpdateCourse(Course course); } [Transaction(TransactionOptionRequired)] [ConstructionEnabled(true, Default= "server=localhost;database=CourseManagement;" + "trusted_connection=true")] [SecurityRole("Course Admin")] [SecurityRole("Course Assistant")] [SecureMethod]
Encoding Code128 In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create Code128 image in .NET applications.
public class UpdateCourseControl : ServicedComponent, IUpdateCourse { private string connectionString; protected override void Construct(string s) { connectionString = s; }
EAN / UCC - 13 Encoder In Java
Using Barcode generator for Java Control to generate, create GS1 - 13 image in Java applications.
[AutoComplete] public void AddOrUpdateCourse(Course course) {
Barcode Printer In Visual C#
Using Barcode printer for VS .NET Control to generate, create barcode image in .NET applications.
This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks
if (courseIsNew) { if (!ContextUtilIsCallerInRole("Course Admin")) { throw new UnauthorizedAccessException( "You are not allowed to add new courses"); }
CourseData courseData = new CourseData(connectionString); courseDataAddCourse(course); } else if (courseIsModified) { CourseData courseData = new CourseData(connectionString); courseDataUpdateCourse(course); } if (courseIsCourseDateAdded()) { foreach (CourseDate courseDate in courseCourseDates) { if (courseDateIsNew || courseDateIsModified) { using (UpdateCourseDateControl comp = new UpdateCourseDateControl()) { compAddOrUpdateCourseDate(courseDate); } } } } }
Now take a look at another serviced component class:QueryCourseControl This class implements the interface IQueryCourse with the methods GetCategories and GetCourses, both of which return anArrayList object With GetCategories, the collection returned contains a list of all different course categories; the GetCourses method returns a collection of all courses where thecourseSelection can be applied CourseSelection is a helper class that allows defining with the query what data should be returned (for example, whether courses only for a specific collection should be returned and what date range should be used if the course dates should be returned) In the implementation of GetCourses, all active courses for the category courseSelectionCategory are queried using the data class CourseData If the course dates should be returned, which is defined with the courseSelectionGetDates Boolean property, they are added to each course with the help of the CourseDatesData class