data access with ado net and linq

... objects to access Web-based data 2 Module 7: Universal Data Access with ADO 2.5 # Using ADO 2.5 ! Understanding OLE DB ! The ADO 2.5 Object Model ! Using ADO Objects ADO 2.5 is provided with Microsoft ... collection of a Command object: Module 7: Universal Data Access with ADO 2.5 15 Dim objCmd As ADODB.Command Set objCmd = New ADODB.Command With objCmd Set ActiveConnection = objCon CommandType = adCmdStoredProc ... design guidelines and using efficient data access programming techniques v vi Module 7: Universal Data Access with ADO 2.5 Highlight some of the ways in which you can use ADO to access databases efficiently,...

Ngày tải lên: 21/12/2013, 19:15

... ADO. NET team owns the LINQ to ADO. NET group members, which includes LINQ to Entities, LINQ to DataSets, and LINQ to SQL The C# group owns the LINQ specification and LINQ to Objects, the ASP .NET ... Query (LINQ) LINQ to ADO. NET LINQ to Objects LINQ to Entities LINQ to DataSets LINQ to SQL In-Memory Objects Entity Data Model Relational Data Store LINQ to XML/XSD ASP .NET Entity Framework LINQ ... on ADO. NET 3.5 Chapter 1: Taking a New Approach to Data Access in ADO. NET 3.5 Language Integrated Query (LINQ) LINQ to Objects Sample LINQ Queries LINQ Data Binding with the ToList() Operator LINQ...

Ngày tải lên: 19/04/2014, 20:11

... display controls, the ASP .NET sample gets by with only two controls: the data source and the grid control Chapter 21  Binding Data with ADO. NET 365 Within the markup for an ASP .NET application, controls ... web browser session and displays the data- bound grid in the web page that appears in the browser Understanding ASP .NET Data Binding As with Windows Forms, a data- bound ASP .NET application uses ... hierarchical -data environments The CourseCatalog examples shown above not include hierarchical data Chapter 21  Binding Data with ADO. NET 353 ■■ DataSet  This is the wizard-built DataSet instance...

Ngày tải lên: 03/10/2013, 00:20

... Module 5: Reading and Writing XML with ADO. NET iii Instructor Notes Microsoft® ADO. NET uses XML as the format for managing and moving data from a data source to a DataSet object and back This module ... Module 5, “Reading and Writing XML with ADO. NET in Course 2389B, Programming with Microsoft ADO. NET What Is an XmlDataDocument Object? Technical Notes: Emphasize that the XMLDataDocument object ... Microsoft® ADO. NET uses XML as the format for managing and moving data from a data source to a DataSet object and back In addition, you can work directly with data in XML format in an ADO. NET application...

Ngày tải lên: 26/10/2013, 23:15

... VS .NET What is ADO. NET ? • ADO. NET is a set of libraries included with the Microsoft NET Framework that help you communicate with various data stores from NET applications – connecting to a data ... versions of ADO added more XML features, but ADO will never handle XML data as efficiently as ADO. NET) ADO. NET model • ADO. NET is designed to help developers build efficient multitiered database ... the DataSet into the Fill method of a connected ADO. NET object—the DataAdapter NET Data Providers • SQL Client NET Data Provider – communicate with SQL Server databases, version 7+ • OLE DB NET...

Ngày tải lên: 11/12/2013, 17:15

... ocbCustIndiv.GetInsertCommand 82 Else 83 ' Have the command builder create an update SQL command 84 modaCustIndiv.UpdateCommand = ocbCustIndiv.GetUpdateCommand 85 End If 86 87 ' Perform the specified SQL command; ... OleDb.OleDbCommandBuilder ocbCustIndiv = New OleDb.OleDbCommandBuilder(modaCustIndiv) If mblnAdd Then 80 ' Have the command builder create an Insert SQL command 81 modaCustIndiv.InsertCommand = ocbCustIndiv.GetInsertCommand ... the datarow object mdrCustIndiv.Delete() ' Instantiate the command builder ocbCustIndiv = New OleDb.OleDbCommandBuilder(modaCustIndiv) ' Have the command builder create a Delete SQL command...

Ngày tải lên: 21/01/2014, 12:20

... conn.BeginTransaction( ); // Create command in the transaction with parameters SqlCommand cmd = new SqlCommand("InsertCategories_Transacted", conn, tran); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@CategoryID", ... Namespaces, variables, and constants using System; using System.Configuration; using System.Windows.Forms; using System .Data; using System .Data. SqlClient; private SqlDataAdapter da; private DataTable dt; ... committed with the COMMIT TRAN command, the transaction count is decremented back to Keep in mind commits of inner transactions don't free resources or make modifications permanent, and don't...

Ngày tải lên: 21/01/2014, 11:20

... System.Runtime.Remoting.Messaging We can add data to the context with CallContext.SetData(), and reading the data can be done with CallContext.GetData() We cannot pass basic data types with the context, but only ... properties that give faster access to method names and parameters With these interfaces, it is not necessary to deal with the dictionary to access this data 158 .NET Remoting Architecture Marshaling ... only to create a tracking handler and register this handler with the utility class TrackingServices Tracking Handler A tracking handler implements the interface ITrackingHandler This interface defines...

Ngày tải lên: 05/03/2014, 22:20

... Kevin B Korb and Ann E Nicholson Exploratory Data Analysis with MATLAB® Wendy L Martinez and Angel R Martinez Forthcoming Titles Correspondence Analysis and Data Coding with JAVA and R Fionn Murtagh ... Vakili, and Andrea Demby Finally, we are indebted to Naomi Fernandes and Tom Lane at The MathWorks, Inc for their special assistance with MATLAB s r e m i a l c s iD Any MATLAB programs and data ... Exploratory Data Analysis methods such as linking and brushing We also connect both sections by revisiting the idea of the grand tour and show how that can be implemented with Andrews’ curves and parallel...

Ngày tải lên: 08/04/2014, 10:10

... are responsible for programmatic access to all available resources within NET and include ASP .NET, Enterprise Services, ADO. NET, and Windows Forms This is all well and good until you want to develop ... grdEmployees.DataSource = DS In the following line, the DataBind method of the DataGrid control loads the data grid with data The data grid then displays the data as an HTML table: grdEmployees.DataBind() ... Microsoft NET' s heavy reliance on standards-based protocols and formats, such as XML and SOAP Another key factor is that NET has been specifically designed with the Internet in mind To make the NET...

Ngày tải lên: 29/04/2014, 15:14

... the Chernoff bound and (2.41) for a channel with uniform power delay profile and a channel with an exponential decay power delay profile for the number of paths, P = 32, and with different number ... keying (GMSK) and quaternary phase shift keying (QPSK) Sophisticated multiple access technology like frequency division multiple access (FDMA), time division multiple access (TDMA) and code division ... popular 3G system standards: Wideband CDMA (W-CDMA) and CDMA2000 Compared to FDMA/TDMA, CDMA is more robust against multipath fading, provides greater coverage with fewer cell sites and enables better...

Ngày tải lên: 08/09/2015, 18:24

... handling techniques in ADO. NET ? A 0.0/ 5.0 Points B C D Question 11 of 20 5.0/ 5.0 Points Which object in ADO. Net is similar to the Recordset object of ADO ? A DataProvider B DataProvider C DataReader ... DSN (Data Source Name) has to be used with SQL Server, which namespace has to be imported ? A Sytem .Data. ODBC B Sytem .Data. ODBC C System .Data. SQLClient D System .Data. Oledb Question 10 of 20 Database ... a DataReader object from Command object? A Command.GetAllReader() B Command.ExecuteReader() C Command.GetReader() Question 14 of 20 What's wrong with these code: using System; using System .Data; ...

Ngày tải lên: 31/03/2017, 15:12

... ADO. NET team owns the LINQ to ADO. NET group members, which includes LINQ to Entities, LINQ to DataSets, and LINQ to SQL The C# group owns the LINQ specification and LINQ to Objects, the ASP .NET ... Query (LINQ) LINQ to ADO. NET LINQ to Objects LINQ to Entities LINQ to DataSets LINQ to SQL In-Memory Objects Entity Data Model Relational Data Store LINQ to XML/XSD ASP .NET Entity Framework LINQ ... on ADO. NET 3.5 Chapter 1: Taking a New Approach to Data Access in ADO. NET 3.5 Language Integrated Query (LINQ) LINQ to Objects Sample LINQ Queries LINQ Data Binding with the ToList() Operator LINQ...

Ngày tải lên: 02/07/2014, 12:20

... developers access data and related data services It comes as a base class library with the Microsoft NET Framework Both relational and nonrelational data sources can be accessed using ADO. NET A discussion ... own ADO. NET interface code to connect to the database and get the data All we want from the wizard is the dataset with the data table inside To delete TableAdatper, double-click the RealWorldDataSet ... PM Page 60 CHAPTER s DATA MODELS, DATASETS, AND THE ADO. NET INTERFACE Figure 3-10 Steps to add a data table to dataset Click the header of the newly created data table, and name it dtCreditLimit...

Ngày tải lên: 05/10/2013, 08:48

... Using ADO. NET to Access Data Using DataViews Topic Objective To explain the role of DataViews in accessing data from a database by using DataSets Lead-in To access data from a DataSet, you need DataViews ... SQL commands against the data store Both the SQLDataSetCommand and the ADODataSetCommand classes feature four command objects, InsertCommand, UpdateCommand, DeleteCommand, and SelectCommand These ... XML ADO. NET has some of the same objects as ADO (like the Connection and Command objects), and introduces new objects such as DataSets, DataReaders, and DatasetCommands Some of objects in ADO. NET...

Ngày tải lên: 27/10/2013, 07:15

... available with ADO. NET Application ADO. NET OLE DB Data Store Figure 1-5 10 ODBC History of Data Access With ADO. NET, the days of the recordset and cursor are gone The model is entirely new, and consists ... open and forward it on to all the methods that needed to access data ADO. NET With the release of the NET Framework, Microsoft introduced a new data access model, called ADO. NET The ActiveX Data ... the data access consumers such as DAO, RDO, ADO, and ADO. NET come into play DAO With the release of Visual Basic 2.0, developers were introduced to a new method for accessing data, known as Data...

Ngày tải lên: 12/12/2013, 21:16

... Chapter 1: History of Data Access The Early Days CODASYL IMS Relational Databases The Birth of Universal Data Access ODBC OLE-DB Data Access Consumers DAO RDO ADO ADO .NET ADO. NET 2.0 Summary For ... Parameters, Return Codes, Scalars, and DataReaders DataSet Manually Populating a DataSet Using DataAdapters Using DataReaders DataTable RowState DataView Serialization DataTableReader Streaming Namespace ... and CURSOR Data Types in ADO. NET and NET SqlTypes Other Alternatives Mapping SQL Server Data Types to NET Summary For More Information Chapter 5: ADO. NET Integration with XML What This Chapter...

Ngày tải lên: 12/12/2013, 21:16

... Mục lục ADO. NET Overview Using Database Connections Commands Quick Data Access: The Data Reader Working with DataSet Viewing NET data Example Data Access and Viewing with NET Editor: Đoàn ... Add data table vào data set cách thêm vào thuộc tính Tables data set Data Access and Viewing with NET Editor: Đoàn Quang Minh Đoà 10 Working with DataSet – Example DataSet ds = new DataSet(); DataTable ... trường web Data Access and Viewing with NET Editor: Đoàn Quang Minh Đoà Working with DataSet DataSet: – Có tác dụng giống CSDL offline: Trong DataSet chứa DataTable, DataRelation,… DataSet xây...

Ngày tải lên: 13/12/2013, 09:16

... the DataRow A CommandBuilder object is created to create the Update command for the DataAdapter object The DataAdapter Update method is called to update the dataset with the data changed and ... creates and fills a data table using a data adapter The string that the data adapter uses creates a Select statement by using the txtCustLimit text box The DataSource, DisplayMember, and ValueMember ... the list box, a data adapter is created, and a dataset is filled Next, the individual DataRow is created Last, each of the TextBox controls is loaded with the value from the column with the corresponding...

Ngày tải lên: 24/12/2013, 06:17

... 14 Module 1: Data- Centric Applications and ADO. NET The ADO. NET Object Model DataSet SQL Server NET SQL Server NET Data Provider Data Provider OLE DB NET OLE DB NET Data Provider Data Provider ... Module 1: Data- Centric Applications and ADO. NET 13 Evolution of ADO to ADO. NET Command Command XxxConnection XxxConnection XxxTransaction XxxTransaction XxxCommand XxxCommand DataSet DataSet Recordset ... more than 15 minutes ADO. NET and XML is discussed in detail in Module 5: “Reading and Writing XML with ADO. NET, ” in Course 2389B, Programming with Microsoft ADO. NET ADO. NET and XML Technical Notes:...

Ngày tải lên: 24/01/2014, 10:20