INSERT SNIPPET Insert 14, Snippet Item 8. in Visual Basic .NET

Creator QR Code in Visual Basic .NET INSERT SNIPPET Insert 14, Snippet Item 8.

INSERT SNIPPET Insert 14, Snippet Item 8.
QR Code ISO/IEC18004 Creation In Visual Basic .NET
Using Barcode encoder for .NET Control to generate, create QR Code image in .NET applications.
www.OnBarcode.com
Decode QR Code In Visual Basic .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
' ----- Prompt for the database connection details. Dim newConnection As String ' ----- Prompt the user for the new setting. newConnection = LocateDatabase.PromptUser( ) If (newConnection = "") Then Return ' ----- Store the new value. LibraryConnection = newConnection RecordDBLocation.Text = GetDBDisplayText(LibraryConnection)
Generate Barcode In VB.NET
Using Barcode maker for .NET Control to generate, create Barcode image in VS .NET applications.
www.OnBarcode.com
Paint ANSI/AIM Code 128 In VB.NET
Using Barcode generation for VS .NET Control to generate, create USS Code 128 image in Visual Studio .NET applications.
www.OnBarcode.com
Several of the settings specify the locations of files used by the application, such as the online help files. The user can type in the path to the file directly, or use the Open File dialog to locate the file visually. To display this dialog, I ve added an OpenFileDialog control named LocateFile. Using it is a matter of setting the various file-specific properties and calling the ShowDialog method. Here s some of the code already included in the ActBasicHelp_Click event handler used to locate the nonadministrative online help file:
Painting GS1 - 12 In Visual Basic .NET
Using Barcode drawer for .NET Control to generate, create Universal Product Code version A image in Visual Studio .NET applications.
www.OnBarcode.com
PDF 417 Encoder In Visual Basic .NET
Using Barcode generation for .NET Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
' ----- Set up the file structure. LocateFile.DefaultExt = "chm" LocateFile.FileName = RecordBasicHelp.Text LocateFile.Filter = "Help Files (*.chm)|*.chm|" & _ "All Files (*.*)|*.*" LocateFile.FilterIndex = 1 LocateFile.Title = "Locate Help" ' ----- Prompt the user. If (LocateFile.ShowDialog( ) <> _ Windows.Forms.DialogResult.OK) Then Return ' ----- Save the file path. RecordBasicHelp.Text = LocateFile.FileName
Create Code39 In VB.NET
Using Barcode encoder for .NET Control to generate, create USS Code 39 image in .NET applications.
www.OnBarcode.com
USPS PLANET Barcode Maker In VB.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create USPS PLANET Barcode image in .NET framework applications.
www.OnBarcode.com
Once the user has made the various setting changes, a click on the OK button saves each new setting to its storage area. I ve included the database-focused saving code in the SaveFormData routine. I ll let you add the settings-focused code, near the end of that routine.
QR Recognizer In .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
QR Code 2d Barcode Printer In .NET
Using Barcode creation for VS .NET Control to generate, create Denso QR Bar Code image in VS .NET applications.
www.OnBarcode.com
Project |
EAN128 Generation In Objective-C
Using Barcode encoder for iPhone Control to generate, create EAN / UCC - 14 image in iPhone applications.
www.OnBarcode.com
Paint Code 39 Full ASCII In Java
Using Barcode printer for Android Control to generate, create Code 39 image in Android applications.
www.OnBarcode.com
INSERT SNIPPET Insert 14, Snippet Item 9.
Read Code-39 In VS .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Barcode Printer In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
My.Settings.DBConnection = LibraryConnection My.Settings.ReportConfig = Trim(RecordConfigLocation.Text) My.Settings.HelpFile = Trim(RecordBasicHelp.Text) My.Settings.HelpFileAdmin = Trim(RecordAdminHelp.Text) My.Settings.HideLogin = HideLogin.Checked My.Settings.UseReceipts = EnableReceipts.Checked My.Settings.ReceiptPrinter = Trim(RecordPrinterLocation.Text) My.Settings.ReceiptPostlude = RecordPostlude.Text ' ----- Save the receipt printer width. If (Trim(RecordPrinterWidth.Text) = "") Then My.Settings.ReceiptWidth = DefaultReceiptPrinterWidth Else My.Settings.ReceiptWidth = CInt(RecordPrinterWidth.Text) End If
Linear Drawer In .NET
Using Barcode printer for VS .NET Control to generate, create Linear Barcode image in .NET applications.
www.OnBarcode.com
EAN 13 Drawer In Objective-C
Using Barcode generation for iPad Control to generate, create UPC - 13 image in iPad applications.
www.OnBarcode.com
Although the Maintenance form provides a user-friendly interface to the databasestored settings, you probably remember that we already wrote code to update SystemValue table records through the SystemValue.vb file. In 12, we connected that form to the main form, but we re going to alter that logic. First, we ll add the call to the SystemValue form to the Maintenance form s ActAllValues_Click event handler.
Make ANSI/AIM Code 128 In None
Using Barcode maker for Software Control to generate, create Code 128 Code Set A image in Software applications.
www.OnBarcode.com
data matrix excel add in free
Using Barcode drawer for Office Excel Control to generate, create Data Matrix image in Microsoft Excel applications. free barcode software for excel data matrix excel add in free
www.OnBarcode.com
INSERT SNIPPET Insert 14, Snippet Item 10.
Recognizing Barcode In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Barcode Encoder In .NET Framework
Using Barcode creation for Reporting Service Control to generate, create Barcode image in Reporting Service applications.
www.OnBarcode.com
' ----- Let the user edit the list of system values. Dim RecordsForm As Library.ListEditRecords ' ----- Edit the records. RecordsForm = New Library.ListEditRecords RecordsForm.ManageRecords(New Library.SystemValue) RecordsForm = Nothing ' ----- Refresh the display elements. PopulateCurrentValues( )
Then we ll change the AdminLinkValues_LinkClicked event handler back in MainForm.vb. Currently, it calls the SystemValue editor directly. Replace that part of the LinkClicked handler s code with code that calls the Maintenance form instead.
|
14: Application Settings
INSERT SNIPPET Insert 14, Snippet Item 11.
' ----- Access the maintenance portion of the program. Maintenance.ShowDialog( )
Connecting to the Con gured Database
The last change in this chapter uses the configured connection string to establish the connection to the database. When we originally wrote the ConnectDatabase routine in the General module, we added a hardcoded connection string just to get the program working.
' ----- Build the connection string. ' !!! WARNING: Hardcoded for now. connectionString = "Data Source=MYSYSTEM\SQLEXPRESS;" & _ "Initial Catalog=Library;Integrated Security=true"
Now that we have a user-configured connection string available, we will use that instead. The changes we must make to this routine are somewhat extensive, so just replace the function s existing content with the updated code.
INSERT SNIPPET Insert 14, Snippet Item 12.
' ----- Connect to the database. Return True on success. Dim connectionString As String Dim configChanged As Boolean ' ----- Initialize. HoldTransaction = Nothing configChanged = False ' ----- Obtain the connection string. If (Trim(My.Settings.DBConnection & "") = "") Then ' ----- Inform the user about the need to configure ' the database. If (MsgBox("This copy of the application has not " & _ "been configured to connect to the library " & _ "database. If you know the database settings, " & _ "you can configure it now. Would you like to " & _ "proceed ", MsgBoxStyle.YesNo Or _ MsgBoxStyle.Question, ProgramTitle) _ <> MsgBoxResult.Yes) Then Return False
Copyright © OnBarcode.com . All rights reserved.