generate barcode image vb.net Loading and Unloading Instances in C#

Making UPC-A Supplement 5 in C# Loading and Unloading Instances

6
Creating UPC Symbol In C#
Using Barcode generation for .NET framework Control to generate, create GS1 - 12 image in Visual Studio .NET applications.
www.OnBarcode.com
Reading UPC Code In Visual C#.NET
Using Barcode reader for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Loading and Unloading Instances
Print Bar Code In Visual C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Bar Code Decoder In Visual C#.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
You can control when workflow instances are persisted by calling specific methods on the WorkflowInstance object or by allowing your workflow to enter an idle state by using a Delay activity. In the case of a delay, you ll control automatic persistence by providing a parameter to the persistence service constructor. The workflow instance is persisted until that condition is met and the delay duration has expired. Note Suspending a workflow instance is not the same as delaying it. Using a Delay activity will automatically write the workflow instance to the database (if you re using SqlWorkflowPersistenceService and have configured it to do so, as you ll see in the final section of this chapter). Suspension merely withdraws the workflow from actively processing. You then have the option to manually write the workflow to the database using Unload or TryUnload. How WF accomplishes this is through the use of SqlWorkflowPersistenceService combined with a database created specifically for the task (very much like the one we created for the tracking database in the previous chapter). Both Windows Vista and .NET 3.0 ship with scripts you can use to create the database schema (the tables and views) as well as the logic necessary to perform the persistence (the stored procedures). Let s establish the database first.
Printing UPC-A Supplement 5 In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create GTIN - 12 image in ASP.NET applications.
www.OnBarcode.com
UPC-A Supplement 2 Creator In VS .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create UPC A image in Visual Studio .NET applications.
www.OnBarcode.com
Setting Up SQL Server for Persistence
Draw UPC-A In VB.NET
Using Barcode generation for VS .NET Control to generate, create GTIN - 12 image in .NET applications.
www.OnBarcode.com
Data Matrix 2d Barcode Creation In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create ECC200 image in .NET applications.
www.OnBarcode.com
As we did in the last chapter, we ll begin by creating a new database in SQL Server Management Studio Express. We ll run some SQL scripts that ship with the .NET 3.0 components (downloadable as a separate installation or prepackaged with Windows Vista). As with tracking, these scripts will create the database roles, tables and views, and stored procedures necessary to persist workflow instances. Create a SQL Server 2005 persistence database 1. Open SQL Server Management Studio Express. Note
Making Barcode In Visual C#
Using Barcode printer for Visual Studio .NET Control to generate, create barcode image in .NET applications.
www.OnBarcode.com
Paint Code 39 Full ASCII In Visual C#
Using Barcode generator for VS .NET Control to generate, create Code-39 image in VS .NET applications.
www.OnBarcode.com
The set of steps you ll follow here are very similar to the steps you followed in the previous chapter in the procedure Create a SQL Server 2005 tracking database. The major difference is that the scripts you ll execute here are designed for saving executing workflows rather than tracking their activity.
Bar Code Printer In C#
Using Barcode generator for VS .NET Control to generate, create bar code image in .NET applications.
www.OnBarcode.com
Leitcode Creator In C#
Using Barcode printer for VS .NET Control to generate, create Leitcode image in VS .NET applications.
www.OnBarcode.com
2. We ll need to again connect to the database engine we want to use, using the SQL Server Connect To Server dialog box:
EAN128 Encoder In Java
Using Barcode generation for BIRT Control to generate, create EAN / UCC - 14 image in Eclipse BIRT applications.
www.OnBarcode.com
Make Data Matrix In Objective-C
Using Barcode drawer for iPhone Control to generate, create Data Matrix image in iPhone applications.
www.OnBarcode.com
Part I
Printing PDF 417 In None
Using Barcode printer for Online Control to generate, create PDF 417 image in Online applications.
www.OnBarcode.com
Printing Matrix 2D Barcode In .NET
Using Barcode encoder for .NET framework Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Introducing Windows Workflow Foundation (WF)
Generating Code-39 In Java
Using Barcode printer for Android Control to generate, create Code 39 Full ASCII image in Android applications.
www.OnBarcode.com
Recognizing UPCA In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
3. Activate Object Explorer if it is not visible. You can activate it by selecting Object Explorer from the View menu.
Decode EAN128 In Visual Basic .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Code 128B Maker In None
Using Barcode printer for Microsoft Excel Control to generate, create Code 128B image in Office Excel applications.
www.OnBarcode.com
4. Right-click on the Databases node to activate the context menu, and select New Database.
5. The New Database dialog box should now appear. Type WorkflowStore in the Database Name field, and click OK.
6
Loading and Unloading Instances
6. If you expand the Databases node in Object Explorer, you should find the new WorkflowStore database has been added.
7. Next we ll need to execute the scripts I mentioned that .NET 3.0 provides for persistence, starting with the schema script. As before, the scripts are located in <%WINDIR%>\Microsoft.NET\Framework\v3.0\Windows Workflow Foundation\SQL\EN, where <%WINDIR%> is your Windows directory (typically, C:\Windows). From SQL Server Management Studio s File menu, select Open and then File, which brings up the common Open File dialog box. Using the controls in the Open File dialog box, locate the schema script, SqlPersistenceService_Schema.sql. Select that from the available scripts, and click the Open button. Note that you ll need to connect to your database server once again.
Part I
Introducing Windows Workflow Foundation (WF)
8. SQL Server Management Studio will load the script into a new window, but before we actually run the script, remember we ll need to specify which database we want the script to run against. Of course, we want to use the WorkflowStore database we just created. Therefore, locate the WorkflowStore database in the drop-down list of databases and select it as the target.
9. With the WorkflowStore database designated as the target of the script, execute the script by clicking the Execute button on the toolbar. 10. Repeat steps 7 through 9 to execute the SqlPersistenceService_Logic.sql script. This loads the necessary stored procedures into the database. If everything worked as it should, we now have a database ready for workflow instance storage. It s time to plug SqlWorkflowPersistenceService into our workflow processing so that we can use the database we just created.
Copyright © OnBarcode.com . All rights reserved.