a programmers introduction to visual basic net pdf

Tài liệu A Programmer''''s Introduction To Visual Basic .NET doc

Ngày tải lên : 10/12/2013, 16:15

... 103 6D ATABASE A CCESS WITH VB .NET AND ADO .NET 105 Accessing a Database from a Windows Application 106 Using the DataAdapter Configuration Wizard 107 ADO .NET 122 About ADO .NET 122 DataSets 122 Working ... application using Visual Basic 3.0. The application was a data-entry form with a data control, some text boxes, and an OK button a simple application that read and wrote data to a Microsoft Access ... you have been creating in Visual Basic for the past six years, it is similar. Just as a standard COM DLL has a type library, the assembly has a manifest that contains the metadata for the assembly,...

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A Programmer’s Introduction to Visual Basic.NET docx

Ngày tải lên : 24/03/2014, 04:20

... can also have multiple Catch statements to catch various errors. To have one Catch statement catch a particular error, you add a When clause to that Catch. Examine this code: Try x \= y ‘ cause ... Page 5 The Variant Data Type Has Been Replaced The Variant data type has been replaced. Before you start thinking that there is no longer a catch-all variable type, understand that the Variant ... part written in C# (pronounced “C-Sharp”), or any other language built to target the .NET Framework. .NET supplies a standard security mechanism, available to all parts of your application. .NET...

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Tài liệu A Concise Introduction to Data Compression- P1 pdf

Ngày tải lên : 14/12/2013, 15:15

... pixels may appear many times, and in an audio file, a string of audio samples may also appear repeatedly. A dictionary-based method maintains a dictionary that contains bits and pieces of the data. As ... next example is even more convincing (and only somewhat contrived): alfeastmaneasilyyells A| AAAAAAAAAA AAAAAH . The encoder creates the token (1,9 ,A) , matching the first nine copies of A in ... the fact that parts of data tend to appear several times in a given data file. Thus, a text file may contain several occurrences of a word, a phrase, or a syllable. In an image file, the same string...

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Tài liệu Creating a Connection Object Using Visual Studio .NET pdf

Ngày tải lên : 21/01/2014, 07:20

... You'll recall that a SqlConnection object allows you to connect to a SQL Server database. You can also drag an OleDbConnection object from the Toolbox to your form to connect to a database ... button to ensure your details are correct. At this point, you've entered all the mandatory details, and you can choose to save your details by clicking OK, or you can click Advanced to ... Creating a Connection Object Using Visual Studio .NET To create a SqlConnection object using Visual Studio .NET, you drag a SqlConnection object from the Data tab of the Toolbox to your...

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Using Visual Basic NET Databases to Create Pricing Trading R_6 pdf

Ngày tải lên : 20/06/2014, 23:20

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Define a Class in Visual Basic .NET

Ngày tải lên : 07/11/2013, 15:15

... Define a Class in Visual Basic .NET Before writing code, you should take a moment to decide what data the class needs to contain and what actions a developer (whether it is you or a teammate) ... the same interface in different ways. An interface cannot exist as an object: It has no code and no place to store object data. A class that implements an interface has an explicit contract ... You can also create properties that accept a parameter. For example, in the Northwind database, a customer might have many orders. A parameterized property would be a perfect way to access...

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Tài liệu Programming Microsoft SQL Server 2000 with Microsoft Visual Basic .Net - P2 pdf

Ngày tải lên : 24/12/2013, 02:18

... SELECT st at em ent can return a scalar value, a single colum n of values, or a two- dim -ensional array of values. I n norm al dat a access scenarios, t he t wo-d- im ensional array of values ... a DEFAULT const raint t hat assigns the current t im e aut om atically. Users and your applicat ion’s code can override t his default value. The t im est am p dat a t ype also autom at ically ... of a sear ch st ring or within a search st ring. The ^ par am eter specifies that ret urn values not m atch a pat t ern. This param et er always appears in a search st ring within square bracket...

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Tài liệu Lập trình Visual Basic.Net 2005 pdf

Ngày tải lên : 19/01/2014, 04:20

... bản c a .NET Framework. Nếu ta để ý tên c a Visual Basic. NET (VB .NET) , ta thấy ngay ngôn ngữ lập trình này chuyên trị tạo ứng dụng (application) dùng trong mạng, liên mạng hay trong Internet. ... quan sát thành phần cơ bản c a .NET: User Applications .NET Framework .NET Servers .NET Devices Hardware Components 1.3.1 .NET Servers Như vậy, ta thấy Microsoft Visual Studio .NET IDE giúp ta ... hơn, a dạng hơn. Tất cả những thay đổi này nhằm đáp ứng kịp thời sự đòi hỏi và nhu cầu phát triển cấp bách trong kỹ nghệ hiện nay. 1.2 Sơ lược về Visual Basic. NET Visual Basic. NET (VB .NET) là...

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Tài liệu Programming Microsoft SQL Server 2000 with Microsoft Visual Basic .Net - P9 pdf

Ngày tải lên : 21/01/2014, 08:20

... essages associated with a validator control will always appear where you place the control on a Web page unless you also add a ValidationSummary control to the page. With a ValidationSumm ary ... corresponds to that for the SqlDat aAdapter object in the Syst em .Data.SqlClient namespace. After declaring a variable as a SqlXm lAdapter object, you can instantiate t he variable with an expression ... you may be misled to believe that the SQLXML Managed Classes work only with C# . You can translate all the C# samples into Visual Basic .NET syntax. This chapter includes several Visual Basic...

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Tài liệu Programming Microsoft SQL Server 2000 with Microsoft Visual Basic .Net - P11 pdf

Ngày tải lên : 21/01/2014, 08:20

... that the Northwind database is one of the SQL Server sample databases. The database’s public role grants any user access to m ost database objects that ship as part of the database. For exam ... returnvalue As Integer das1 = _ xws1.udpListOfCategoryNamesAsDataset(returnvalue) ’Set data grid to display returned data set. DataGrid1.DataSource = das1 DataGrid1.Expand(-1) ’Declare a ... pointing to the database. The virtual directory must have a soap virtual name, such as SoapFor13, which is the virtual soap name for the Chapter13 virtual directory. If you have an existing soap name,...

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Tài liệu Make a Generic Search Form in a Visual Basic .NET docx

Ngày tải lên : 26/01/2014, 11:20

... frmSearch.ShowDialog() = DialogResult.OK Then LoadIndividual(frmSearch.ResultValue) 8.4 Make a Generic Search Form in a Visual Basic .NET Desktop Application Another useful utility that takes advantage ... ByVal e As System.EventArgs) Handles btnAccept.Click Dim dtFromGrid As DataTable Dim drCurr As DataRow Try ' Using the DataRow and DataTable objects of the DataGrid control, ... frmHowTo8_ 4a. vb: Filling the Results Set Based on the Letter Button That Was Pressed Sub SetData(ByVal strFilterLetter As String) Dim odaSearch As OleDb.OleDbDataAdapter Dim dtSearch As DataTable...