Exercise 125 in VB.NET

Creating QR Code ISO/IEC18004 in VB.NET Exercise 125
Exercise 125
QR Code Encoder In VB.NET
Using Barcode creation for VS .NET Control to generate, create QR Code ISO/IEC18004 image in Visual Studio .NET applications.
Private Sub DeleteAuthor(ByVal ID As Long) Dim SQL As String Dim dbConn As OleDbOleDbConnection Dim dbCmd As New OleDbOleDbCommand(Sql, dbConn) SQL = "DELETE * FROM Authors WHERE Au_ID = " & ID dbConn = New OleDbOleDbConnection(CONNSTR) dbConnOpen() dbCmd = New OleDbOleDbCommand(Sql, dbConn) dbCmdExecuteNonQuery() dbConnClose() End Sub
Barcode Generation In VB.NET
Using Barcode maker for VS .NET Control to generate, create bar code image in .NET framework applications.
Solutions to Exercises
Quick Response Code Encoder In C#
Using Barcode drawer for Visual Studio .NET Control to generate, create QR Code JIS X 0510 image in .NET framework applications.
Exercise 126
QR Code 2d Barcode Creator In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create QR Code 2d barcode image in ASP.NET applications.
'Note, this code should go on a form, and the form should 'Import the SystemDataSqlClient library Private ds As DataSet Private dbConn As SqlClientSqlConnection Private auMover As CurrencyManager Private Sub CreateDataSet() 'a) Code to create the DataSet (ds, declared above) Dim sqlAuthors As String = "Select * From Authors" Dim sqlTitles As String = _ "Select * From [Title Author]" Dim daAuthors As SqlDataAdapter = _ New SqlDataAdapter(sqlAuthors, dbConn) Dim daTitles As SqlDataAdapter = _ New SqlDataAdapter(sqlTitles, dbConn) Dim ds = New DataSet() daAuthorsFill(ds, "Authors") daTitlesFill(ds, "Titles") Dim dcAuthors, dcTitles As DataColumn Dim dr As DataDataRelation dcAuthors = dsTables("Authors")Columns("Au_ID") dcTitles = dsTables("Titles")Columns("Au_ID") dr = New DataRelation("AuthorsTitles", _ dcAuthors, dcTitles) dsRelationsAdd(dr) 'b) Code to set up a CurrencyManager (auMover) auMover = MeBindingContext(ds, "Authors") End Sub 'b)contd Four navigation buttons Private Sub btnFirst_Click(ByVal sender As SystemObject, _ ByVal e As SystemEventArgs) _ Handles btnFirstClick auMoverPosition = 0 DisplayTitles() End Sub Private Sub btnLast_Click(ByVal sender As SystemObject, _ ByVal e As SystemEventArgs) _ Handles btnLastClick auMoverPosition = auMoverCount 1 DisplayTitles() End Sub Private Sub btnPrev_Click(ByVal sender As SystemObject, _ ByVal e As SystemEventArgs) _ Handles btnPrevClick auMoverPosition -= 1 DisplayTitles() End Sub
Denso QR Bar Code Encoder In .NET
Using Barcode generator for Visual Studio .NET Control to generate, create QR Code 2d barcode image in Visual Studio .NET applications.
12 n Databases in Visual Basic NET
Bar Code Generation In VB.NET
Using Barcode generation for .NET Control to generate, create bar code image in .NET applications.
Private Sub btnNext_Click(ByVal sender As SystemObject, _ ByVal e As SystemEventArgs) _ Handles btnNextClick auMoverPosition += 1 DisplayTitles() End Sub 'c) Code to display all titles for an author in a ListBox ' Note this is called each time the CurrencyManager ' moves our view to a new Author Private Sub DisplayTitles() Dim auRow As DataRow Dim auView As DataRowView 'As returned by a 'CurrencyManager auView = auMoverCurrent 'Currently visible item auRow = auViewRow 'The associated row lstTitlesItemsClear() Dim tiRow As DataRow For Each tiRow _ In auRowGetChildRows(dsRelations("AuthorsTitles")) lstTitlesItemsAdd(tiRowItem("ISBN")ToString()) Next End Sub
Barcode Generator In VB.NET
Using Barcode printer for .NET Control to generate, create bar code image in VS .NET applications.
Exercise 127
Printing Code 39 Extended In VB.NET
Using Barcode printer for .NET framework Control to generate, create Code 3 of 9 image in VS .NET applications.
Public Class Publisher Private Private Private Private mvarName As String mvarPubID As Integer mvarChanged As Boolean = False mvarBrandNew As Boolean = False
Code-128 Creation In VB.NET
Using Barcode drawer for .NET framework Control to generate, create Code 128 Code Set C image in VS .NET applications.
'Properties for Name, PubID(read-only) 'go here Public Sub New(ByVal PubID As Integer) mvarPubID = PubID Dim r As SqlClientSqlDataReader r = GetReader( _ "Select * From Publishers Where PubID = " _ & PubID & ";") rRead() mvarName = rItem("Publisher")ToString() End Sub Public Sub New(ByVal Name As String) mvarName = Name Dim Sql As String Sql = StringFormat( _ "Insert Into Publishers(Publisher)" _ "Values({0});", mvarName) Sql &= "Select PubID From Publishers " & _ Where (PubID = @@IDENTITY)"
Create ECC200 In VB.NET
Using Barcode printer for VS .NET Control to generate, create DataMatrix image in Visual Studio .NET applications.
Answers to Review Questions
UCC-128 Creation In .NET
Using Barcode creator for ASP.NET Control to generate, create UCC.EAN - 128 image in ASP.NET applications.
mvarPubID = ExecuteCommand(Sql) End Sub Public Overrides Function ToString() As String Return mvarName End Function 'Other methods here ' End Class 'Amending listing 1223 Private Sub btnGetBook_Click(ByVal sender As SystemObject, _ ByVal e As SystemEventArgs) _ Handles btnGetBookClick If txtISBNText <> "" Then Dim B As New Book(txtISBNText) txtTitleText = BTitle txtYearText = BYearPublished Dim A As Object For Each A In BAuthors lstAuthorsItemsAdd(New Author(A)ToString()) Next Dim P As Publisher = New Publisher(BPubID) 'P object now has all of the Publisher properties lblPublisherText = PName End If End Sub
Bar Code Generator In Java
Using Barcode creator for Java Control to generate, create barcode image in Java applications.
Answers to Review Questions
Code 128B Drawer In .NET
Using Barcode encoder for .NET Control to generate, create Code 128 Code Set A image in VS .NET applications.
1 A at- le database manager is able to go directly to any record in a database given the record number What prevents us from implementing the same type of mechanism in a commadelimited le of the type we looked at in chapter 11 Records in a comma-delimited le are likely to be different lengths, and so no simple algorithm can calculate where a speci c record will begin What is a eld that is used to store a reference to a record in a different table called A Primary Key eld How is a many-to-many relationship created in a relational database An extra table is created which has two columns one for the primary key of the Master table, another for the primary key of the Detail table
Barcode Encoder In Java
Using Barcode creation for Java Control to generate, create barcode image in Java applications.
USS Code 128 Recognizer In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Print Barcode In VS .NET
Using Barcode maker for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.
UCC - 12 Printer In .NET
Using Barcode generator for ASP.NET Control to generate, create UPC-A Supplement 5 image in ASP.NET applications.