... relational database. Some columns in a table ina database allow null values, indicating that the value held is not defined or is unknown. If you want to display this data ina CheckBox, you can ... Form1 .cs. A menu appears. 2. On the menu, click View Class Diagram. A new class diagram appears displaying the MemberForm class. 3. Right-click the MemberForm class in the diagram, point to Add, and ... similar toa CheckBox in that it can contain a True or False value. However, the power of radio buttons increases when you put them together ina GroupBox. In this case, the radio buttons form a...
... learned how to create a new AJAX-enabled ASP. NET site. Alterna-tively, you can just as easily create an AJAX-enabled ASP. NETweb application if you haveinstalled the Web Application Project add-on ... of ASP. NET AJAX.Using ASP. NET AJAX server controls is the easiest and quickest path to implementingAJAX functionality in your ASP. NET application. They are also ideal for when a minimalamount ... the web applica-tion model and not the ASP. NETweb site model), be sure to install ASP. NET AJAX after installing Visual Studio2005 SP1.CHAPTER 5 ■INTRODUCING SERVER CONTROLSIN ASP. NET AJAX82828-8...
... following scenario: You have a data-driven web pagethat needs to continuously alert the user with fast changing data, for instance, a page thatdisplays the major financial indices in the U.S. capital ... data file is the data container for Scott’s ToDo Listapplication and resides in the App_Data folder of the site. You may have to manually addthe ASP. NET user of your machine to this database ... sophisticated apps that need logical and physical separation of the data tier thathas complex data objects and a data access layer.SummaryThe ToDo List application is an excellent example of an ASP. NET...
... Team LiB ] Recipe 10.8 Adding Tables toa Database Problem You need to add a table to an existing database. Solution Use the CREATE TABLE statement. The sample code executes the DDL statement—using ... statement—using the ExecuteNonQuery( ) method of the Command object to add a table to an existing SQL Server database. The C# code is shown in Example 10-8. Example 10-8. File: AddTableToDatabaseForm.cs ... File: AddTableToDatabaseForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Data; using System.Data.SqlClient; // . . . SqlConnection...
... The DataList Web Forms control displays tabular data from a data source and controls the formatting using templates and styles. The DataList must be bound toa data source such as a DataReader, ... dataList.DataSource = CreateDataSource( ); dataList.DataKeyField = "Id"; dataList.DataBind( ); } } private DataTable CreateDataSource( ) { DataTable dt = new DataTable(TABLENAME); ... DataSet, DataTable, or DataView—any class that implements the IEnumerable interface can be bound. The easiest way to create a DataList control is to drag the DataList control onto the web page...
... bound toa data source such as a DataReader, DataSet, DataTable, or DataView. Any class that implements the IEnumerable interface can be bound. The easiest way to create a DataGrid control is to ... CreateDataSource( ); dataGrid.DataKeyField = "OrderId"; dataGrid.DataBind( ); } } private DataTable CreateDataSource( ) { DataTable dt = new DataTable( ); // Create a ... retrieves tabular information from a data source and renders it inaweb page. The control supports functionality for selecting, editing, deleting, sorting, and navigating the data. The DataGrid...
... your clients inevitably wants to be able to examine the data in his database, and not necessarily in edit pages. The client wants to be able to list his data out and examine the data at his leisure. ... Dim odaDisplay As OleDb.OleDbDataAdapter Dim dtDisplay As New DataTable() Try ' Take the txtSQLString text and create a data table. Then set the ' data source of the data grid. ... string that is created and stored in txtSQLString. When the btnView button is clicked, the string is passed toa DataAdapter control, filling a data table. From there, the data is displayed...
... kh a cạnh c a Win /Web appaspnetaspnetỨng dụng Web đầu tiênỨng dụng Web đầu tiên(Your First Web Application)(Your First Web Application)Trình bày: Hà Đồng HưngGiới thiệu VMWare Workstation6Mục ... tên c a event.Giới thiệu VMWare Workstation5Loại ProjectLoại Project•Class library•Windows control library•Console application•Windows service• ASP. NETWeb application• ASP. NETWeb ... service• Web control libraryGiới thiệu VMWare Workstation7 Web app đầu tiên Web app đầu tiên•Chúng ta sẽ phát triển một application rất đơn giản–Để biểu thị không chỉ cho thiết kế giao diện–Mà...
... SqlDbCommandcmd.CommandText=”Select * From KhachHang Where MaKH=@MaKH”;SqlParameter Par As SqlParameter = cmd.CreateParameter();Par.ParameterName=”@MaKH”;Par.Value=”KH01”;cmd.Parameters.Add(Par);Khoa ... đọc xong)SqlDataReader <Tên DataReader> As SqlDataReader;<Tên DataReader> = <tên Command>.ExecuteReader;VD: SqlDataReader rd As SqlDataReader; rd = cmd.ExecuteReader; Phương ... bảng (DataTable), các quanhệ (DataRelation) và các ràng buộc (constraint) Dataset thuộc tên miền: System.Data.Dataset. Khai báoNew System.Data.Dataset()HoặcNew System.Data.Dataset(<tên...
... make a call to the DataTier web service to get the DataTableback. The DataTablethen loads thegraph with the appropriate data.CHAPTER 10 ■BUILDING A SAMPLE APPLICATION USING ASP. NET AJAX244828-8 ... ■BUILDING A SAMPLE APPLICATION USING ASP. NET AJAX 239828-8 CH10.qxd 10/11/07 10:47 AM Page 239226 CHAPTER 10 ■BUILDING A SAMPLE APPLICATION USING ASP. NET AJAXFigure 10-1. An ASP. NET AJAX-based ... 26–27financial research application, 225–256application architecture, 226–228applying ASP. NET AJAX, 253–255charts & analytics pane, 241–253company and quote information,232–237price history...
... We will create a separate pages to insert these records (default.aspx) into database and list,update,delete records (list.aspx) from database. In this application we will have following 4-Tiers ... We will create a separate pages to insert these records (default.aspx) into database and list,update,delete records (list.aspx) from database. In this application we will have following 4-Tiers ... shown above (default.aspx and list.aspx pages). Try manipulating data and see how effectively its happening. This was a simple application, based on this architecture, you can create larger application...
... in ASP. NET, page-level tracing and application-level tracing. In the lab, students will enable and disable tracing for an ASP. NET page. They will also add custom trace messages to an ASP. NET ... Trace 4 Application-Level Trace 9 Lab 5: Adding Trace to an ASP. NET Page 14 Review 15 Module 5: Using Trace in ASP. NET Pages Module 5: Using Trace in ASP. NET Pages 7 BETA MATERIALS ... will enable and disable tracing for an ASP. NET page. You will also add custom trace messages to an ASP. NET page and a middle-tier component. Module 5: Using Trace in ASP. NET Pages iii...
... Applications with ASP. NET A Web application that uses ASP. NET typically consists of one or more ASP. NET pages or Web forms, code files, and configuration files. A Webform is held in an .aspx ... that the Standard category is expanded. The Toolbox contains controls that you can drop onto ASP. NET forms. These controls are similar, in many cases, to the controls you have been using to ... essentially an HTML file with some Microsoft .NET specific tags. An .aspx file defines the layout and appearance of a page. Each .aspx file often has an associated code file containing the application...
... Framework Mọi chức năng ASP. NET có được hoàn to n d a vào .NET framework, do đó cóchữ .NET trong ASP. NET. Ta cần phải hiểu thấu đáo kiến trúc hạ tầng c a .NET framework để dùng ASP. NET một cách hiệu ... viết bằng ASP. NET Khi có người yêu cầu tham khảo trang web c a ta, trước hết ASP. NET sẽ biêndịch (compile) mã ở phần Code Decalration Block trong trang ASP. NET. Nếu để ýmột chút, ta nhận thấy ... được đ a ra bởi ANSI (AmericanNational Standards Institude) và ISO (International Standards Organization) với phiênbản mới nhất hiện nay là phiên bản SQL 2008 (Phiên bản được đ a ra năm 2008)....
... constructor that accepts a single int value, so we create an objectarray with one element, and assign an int value to that element of the array. The attrs array that is also anobject array also has ... logging. Sinks are connected in sink chains; one sink passes themessage to the next sink. We can differentiate formatter sinks, custom channel sinks, and transportsinks. Formatter sinks transform ... private int data; .NET Remoting Architecture In the last few chapters, we have seen how ASP. NETweb services can be created and used. ASP. NET web services require the ASP. NET runtime as hosting...