... Services ASP .NET ASP .NET System.WebSystem.WebConfigurationConfigurationSessionStateSessionStateCachingCachingSecuritySecurityServicesServicesDescriptionDescriptionDiscoveryDiscoveryProtocolsProtocolsUIUIHtmlControlsHtmlControlsWebControlsWebControls ... Microsoft Corporation. All rights reserved. Microsoft, MS-DOS, Windows, Windows NT, ActiveX, IntelliMirror, JScript, MSDN, PowerPoint, Visual Basic, Visual C+ +, Visual C# , Visual Studio, Win32, ... with Types,” in Course 2415A, Programming the Microsoft .NET Framework with VisualBasic .NET (Prerelease). Specific classes are covered in Module 7, “Strings, Arrays, and Collections,” and other...
... you have written classes inVisualBasic 6, you might be scratching your head, wondering how the code sample in Listing 9.2 declares your properties read/write. In Visual Basic 6, all that mattered ... extraordinarily useful for debugging. Your finished interface should look like Listing 9.8. Listing 9.8 CustomerInterface9_1.vb: The Final ICustomer Interface Public Interface ICustomer #Region "Properties" ... the class block declaration so that it reads interface instead of class, and name the class ICustomer. You should have a code file like that shown in Listing 9.1. Listing 9.1 CustomerInterface9_1.vb:...
... Đ A constructor can call another constructor to do some of its work. The syntax for defining constructors varies slightly between VisualBasic and Visual C# . In Visual Basic, a constructor ... project On the Project menu, click Add Class. Or In Visual C# , right-click the project name in the Class View, point to Add, then click Add Class on the shortcut menu. The VisualBasic ... definition of a class, as shown in the following two screen shots. The VisualBasic class contains the minimum for a class declaration. Here’s the syntax for declaring a class inVisual Basic: ...
... in variable declaration (intrinsic data type) ByVal Used in argument lists Call Visual Basic .NET statement Case Used in the Select Case construct Catch Visual Basic .NET statement CBool ... VisualBasic Trim function is a member of the Microsoft.VisualBasic.Strings class, while the MsgBox function is a member of the Microsoft.VisualBasic.Interaction class. In addition, Visual Basic& apos;s ... Used in variable declaration (intrinsic data type) CInt Data-conversion function Class Visual Basic .NET statement CLng Data-conversion function CObj Data-conversion function Compare...
... EmailContacts VALUES(1,’Rick’, ’Dobson’, ’rickd@cabinc .net ) INSERT INTO EmailContacts VALUES(2,’Virginia’, ’Dobson’, ’virginia@cabinc .net ) SELECT * FROM EmailContacts GO A SELECT st at ... e concept s t hat you w ill find useful as you initially learn t he landscape of VisualBasic .NET. Th e second goal of Chapt er 1 is to introduce ADO .NET. I f you think of VisualBasic .NET ... of tinyint colum n values can exceed 255, but no individual t inyint colum n value can exceed 255. The tinyint / sm allint prom ot ion policy doesn’t apply t o calculat ions based on int colum...
... EmailContacts and run a SELECT query INSERT INTO EmailContacts VALUES(1,’Rick’, ’Dobson’, ’rickd@cabinc .net ) INSERT INTO EmailContacts VALUES(2,’Virginia’, ’Dobson’, ’virginia@cabinc .net ) ... er B or C Belgium , Br azil, and Canada. CountIncidences Count distinct incidences. SELECT Count(DISTINCT Country) FROM Customers WHERE LEFT(Country,1) IN (‘B’, C ) Aggrega t ing w it ... ordering can originat e wit h t he row source in t he FROM clause, or t hey can be calculat ed colum ns. You can designat e ascending ( ASC) or descending ( DESC) sort orders for any colum n in...
... INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME = ’vewAccessCustomersCab2000Orders’) DROP VIEW vewAccessCustomersCab2000Orders GO Create the vewAccessCustomersCab2000Orders view in the Chapter04 ... OPENROWSET of CustomersFromAccess and OPENROWSET of 1998OrdersOnCab2000. CREATE VIEW vewAccessCustomersCab2000Orders AS SELECT TOP 100 PERCENT c. CompanyName, c. ContactName, c. Phone, o.OrderID, ... source in t he Access dat abase as w ell as any special set t ings, such as a WHERE clause. The follow ing scr ipt dem onst rat es a connect ion to an Access dat abase file on the current com...
... indicates an odd num ber. This outcom e calls for a rem edial act ion. The act ion in t his inst ance is t o add 1 t o the input value from the insert ed t able, const ruct a m essage indicating ... y to access a database. This pract ice is especially im portant when you have a guest user account in a dat abase because t he guest account, which allows dat abase access by any login, is ... @col1value int DECLARE @newcol1value int DECLARE @strMsg varchar(400) SET @col1value = (SELECT col1 FROM inserted) If inserted value is odd, make it even before inserting it. IF @col1value%2...