Displaying Data in Windows Controls in .NET framework

Printing DataMatrix in .NET framework Displaying Data in Windows Controls

Displaying Data in Windows Controls
Generate ECC200 In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Generate Bar Code In .NET
Using Barcode maker for ASP.NET Control to generate, create barcode image in ASP.NET applications.
www.OnBarcode.com
The Microsoft .NET Framework supports a wide variety of controls for use on Windows forms, and as we ve seen, any form property can be bound, directly or indirectly, to an ADO.NET data source. The details of each control are unfortunately outside the scope of this book, but in this section, we ll examine some specific techniques for data-binding. Simplifying Data Entry One of the reasons that so many controls are provided, of course, is to make data entry simpler and more accurate. TextBox controls are always an easy choice, but the time spent choosing and implementing controls that more closely match the way the user thinks about the data will be richly rewarded. To take a fairly simple example, it is certainly possible to use a ComboBox containing True and False or Yes and No to represent Boolean values, but in most circumstances, it s far more effective to use the CheckBox control provided by the .NET Framework. The Checked property of the CheckBox control, which determines whether the box is selected, can be simple-bound either at design time by using the Properties window or at run time in code by using standard techniques. Use the CheckBox Control for Boolean Values 1. In the Solution Explorer, double-click Controls.vb (or Controls.cs, if you re using C#). Visual Studio .NET opens the form in the form designer.
Encode ECC200 In C#
Using Barcode maker for VS .NET Control to generate, create Data Matrix ECC200 image in Visual Studio .NET applications.
www.OnBarcode.com
Data Matrix Encoder In Visual Studio .NET
Using Barcode creator for VS .NET Control to generate, create DataMatrix image in .NET applications.
www.OnBarcode.com
2. 3. 4.
Generate Data Matrix In Visual Basic .NET
Using Barcode maker for VS .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
www.OnBarcode.com
Bar Code Printer In VS .NET
Using Barcode creator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
5. 6.
ECC200 Generator In .NET
Using Barcode creator for ASP.NET Control to generate, create DataMatrix image in ASP.NET applications.
www.OnBarcode.com
Code 128 Code Set B Generator In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create USS Code 128 image in ASP.NET applications.
www.OnBarcode.com
Select the Discontinued CheckBox control. In the Properties window, expand the Data Bindings section (if necessary). Select the Checked property. In the drop-down list, expand dsMaster1,and then expand ProductsExtended and select Discontinued. Press F5 to run the application. Click the Controls button.
Making USS Code 39 In .NET
Using Barcode encoder for ASP.NET Control to generate, create Code-39 image in ASP.NET applications.
www.OnBarcode.com
QR Code Creation In .NET
Using Barcode generation for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
www.OnBarcode.com
The application displays the Controls form.
Matrix Barcode Generator In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create 2D Barcode image in ASP.NET applications.
www.OnBarcode.com
Paint 2/5 Industrial In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create Industrial 2 of 5 image in ASP.NET applications.
www.OnBarcode.com
Move through the DataTable by pressing the Next button ( > ), confirming that only discontinued products have the field checked. 8. Close the Controls window. 9. Close the application. In order to simplify the database schema, many tables use artificial keys an identity value of some type rather than a key derived from the entity s attributes. These artificial keys are convenient, but they don t typically have any meaning for users. When working with the primary table, the artificial key can often be hidden from users or simply ignored by them. With foreign keys, however, this is rarely the case. Fortunately, the .NET Framework controls that inherit from the ListControl class, including both ListBox controls and ComboBox controls, make it easy to bind the control to one column while displaying another, even a column in a different table. The technique is reasonably straightforward. First set the DataSource and DisplayMember properties of the list control to the user-friendly table and column. Under most circumstances, this won t be the table that the form is updating. Then, to set the data binding, set the ValueMember property to the key field in the form being updated, and finally create a Binding object linking the SelectedValue property to the field to be updated. For example, given the database schema shown in the figure below, if you were creating a form to update the Relatives table, you would typically use a ComboBox control to represent the Relationship type rather than forcing the user to remember that Type 1 means Sister, Type 2 means Father, and so on.
Scanning EAN13 In .NET
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Create UPC Code In .NET
Using Barcode creation for Reporting Service Control to generate, create Universal Product Code version A image in Reporting Service applications.
www.OnBarcode.com
To implement this in the .NET Framework, you would set the ComboBox control s DisplayMember property to RelationshipTypes.Relationship, and then set its ValueMember property to RelationshipTypes.RelationshipID. With these settings, the ComboBox control will display Sister but return a SelectedValue of 1. Once the properties have been set, either in the Properties window or in code, you must then add a Binding object to the ComboBox control to link the SelectedValue to the Relationship field in the Relatives table. Because SelectedValue isn t available for databinding at design time, you must do this in code: [VB] Me.RelationshipType.DataBindings.Add("SelectedValue", myDS, _ "Relatives.Relationship")
Create PDF-417 2d Barcode In Java
Using Barcode maker for Java Control to generate, create PDF 417 image in Java applications.
www.OnBarcode.com
Encode Code 128 Code Set B In VS .NET
Using Barcode creation for .NET Control to generate, create Code 128A image in .NET applications.
www.OnBarcode.com
[C#] this.RelationshipType.DataBindings.Add("SelectedValue", myDS, "Relatives.Relationship"); Display Full Names in a ComboBox Control
Matrix 2D Barcode Creation In Java
Using Barcode drawer for Java Control to generate, create Matrix Barcode image in Java applications.
www.OnBarcode.com
Generating Denso QR Bar Code In None
Using Barcode printer for Online Control to generate, create Denso QR Bar Code image in Online applications.
www.OnBarcode.com
PDF-417 2d Barcode Decoder In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Drawing Data Matrix 2d Barcode In None
Using Barcode drawer for Word Control to generate, create DataMatrix image in Office Word applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.