pdf417 c# library free s WEB FORMS UI in C#

Creation PDF-417 2d barcode in C# s WEB FORMS UI

CHAPTER 10 s WEB FORMS UI
PDF417 Encoder In Visual C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
Scanning PDF417 In Visual C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Caching the Project Object in Session
Barcode Maker In Visual C#.NET
Using Barcode creation for Visual Studio .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Print UCC-128 In Visual C#.NET
Using Barcode creation for .NET framework Control to generate, create UCC.EAN - 128 image in .NET framework applications.
www.OnBarcode.com
The RolesEdit and ProjectList forms implement methods to retrieve the central business object from Session, or to retrieve it from the database as necessary. This not only implements a type of cache to reduce load on the database, but it provides support for the browser s Back button as well. The same thing is done in ProjectEdit: private Project GetProject() { object businessObject = Session["currentObject"]; if (businessObject == null || !(businessObject is Project)) { try { string idString = Request.QueryString["id"]; if (!string.IsNullOrEmpty(idString)) { Guid id = new Guid(idString); businessObject = Project.GetProject(id); } else businessObject = Project.NewProject(); Session["currentObject"] = businessObject; } catch (System.Security.SecurityException) { Response.Redirect("ProjectList.aspx"); } } return (Project)businessObject; } As before, if there s no object in Session, or if the object isn t a Project, then a Project is retrieved from the database. But the code here is a bit more complex than that in the other forms. Notice that the Request.QueryString property is used to get the id value (if any) passed in on the page s URL. If an id value was passed into the page, that value is used to retrieve an existing Project: Guid id = new Guid(idString); businessObject = Project.GetProject(id); Otherwise, a new Project is created for the page: businessObject = Project.NewProject(); Either way, the resulting object is placed into Session and is also returned as a result from the method. It is possible for a user to navigate directly to ProjectEdit.aspx, providing no id value on the URL. In such a case, the user might not be authorized to add a Project, and so a SecurityException would result. In that case, the user is simply redirected to the ProjectList page, where they can safely view the list of projects.
ECC200 Creator In C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
www.OnBarcode.com
Make USS Code 128 In C#
Using Barcode maker for .NET framework Control to generate, create Code 128 Code Set B image in .NET framework applications.
www.OnBarcode.com
Saving a Project
Linear Maker In Visual C#
Using Barcode generator for .NET Control to generate, create Linear image in Visual Studio .NET applications.
www.OnBarcode.com
Encode ISBN In C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create ISBN - 13 image in Visual Studio .NET applications.
www.OnBarcode.com
In this form, the Project object is saved in many scenarios, including: Inserting the project Editing the project
Painting PDF-417 2d Barcode In Java
Using Barcode generator for Java Control to generate, create PDF-417 2d barcode image in Java applications.
www.OnBarcode.com
Paint PDF 417 In None
Using Barcode maker for Software Control to generate, create PDF 417 image in Software applications.
www.OnBarcode.com
CHAPTER 10 s WEB FORMS UI
Barcode Maker In Java
Using Barcode drawer for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
Encode UCC - 12 In Java
Using Barcode printer for Eclipse BIRT Control to generate, create Universal Product Code version A image in BIRT reports applications.
www.OnBarcode.com
Assigning a resource Unassigning a resource Deleting the project To simplify the code overall, the SaveProject() method handles the common behaviors in all those cases: private int SaveProject(Project project) { int rowsAffected; try { Session["currentObject"] = project.Save(); rowsAffected = 1; } catch (Csla.DataPortalException ex) { this.ErrorLabel.Text = ex.BusinessException.Message; rowsAffected = 0; } catch (Exception ex) { this.ErrorLabel.Text = ex.Message; rowsAffected = 0; } return rowsAffected; } This method accepts the Project as a parameter and calls its Save() method. As always, the resulting object is placed in Session to replace the old version of the object. In case of exception, the ErrorLabel text is updated. The code here is the same as in the other pages, but it is worth consolidating in this page (and in ResourceEdit) because of the many places the Project object is saved.
Data Matrix ECC200 Generation In None
Using Barcode generation for Microsoft Word Control to generate, create Data Matrix 2d barcode image in Microsoft Word applications.
www.OnBarcode.com
Making Code 39 Full ASCII In None
Using Barcode encoder for Office Word Control to generate, create ANSI/AIM Code 39 image in Office Word applications.
www.OnBarcode.com
ProjectDataSource
Paint GTIN - 13 In None
Using Barcode generator for Software Control to generate, create GS1 - 13 image in Software applications.
www.OnBarcode.com
Barcode Scanner In .NET
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
www.OnBarcode.com
The ProjectDataSource control takes care of data binding that deals with the Project object itself. The page handles its DeleteObject, InsertObject, SelectObject, and UpdateObject events. For instance, the SelectObject handler looks like this: protected void ProjectDataSource_SelectObject( object sender, Csla.Web.SelectObjectArgs e) { e.BusinessObject = GetProject(); } Thanks to the GetProject() method discussed earlier, this method is very simple to implement. The delete, insert, and update events are also comparatively simple due to the SaveProject() method. For instance, here s the InsertObject event handler: protected void ProjectDataSource_InsertObject( object sender, Csla.Web.InsertObjectArgs e) { Project obj = GetProject(); Csla.Data.DataMapper.Map(e.Values, obj, "Id"); e.RowsAffected = SaveProject(obj); }
Code 128A Maker In None
Using Barcode creation for Word Control to generate, create Code 128C image in Microsoft Word applications.
www.OnBarcode.com
EAN13 Maker In .NET
Using Barcode generator for Reporting Service Control to generate, create GTIN - 13 image in Reporting Service applications.
www.OnBarcode.com
CHAPTER 10 s WEB FORMS UI
Drawing Barcode In None
Using Barcode printer for Software Control to generate, create Barcode image in Software applications.
www.OnBarcode.com
Scanning Barcode In Java
Using Barcode Control SDK for BIRT reports Control to generate, create, read, scan barcode image in Eclipse BIRT applications.
www.OnBarcode.com
The current Project object is retrieved from Session (or pulled from the database), and the new values entered by the user are mapped into the object s properties using the DataMapper from 5. Then SaveProject() is called to save the project and update Session with the newly updated data. The update operation works in a similar manner, so I won t detail it here.
Copyright © OnBarcode.com . All rights reserved.