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Tham khảo tài liệu 'practical database programming with visual c#.net- p3', công nghệ thông tin, cơ sở dữ liệu phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 3.4 Components of ADO.NET 2.0 123 In addition to a schema a DataTable must also have rows to contain and order data. The Dat aRow class represents the actual data contained in atablc.Youusc th eDataRow and its properties and methods to retrieve evaluate and manipulate the data in a table. As you access andchangt thedatawithina row theD ataRowobtect maitl.ainsbothil.s current ond hriginatctait. 3.4.7.1 ett aTntiloatnr st rucSoa The DataTaHe islouo nactln ioled constructors and Table 3.18 lists three of the most often used constructors. Yonenn creates DataTable object by using the appropriate DataTable constructor. You can add it to the DataSet by using the Add method to add it to the DataTabO ob ect i habletcolltaSios . You can tlao cissIc DataTabte ob ects withm a aOi ot ct bo using the Filj t or FillScheDaOmotOods ottheDataAdapSer sbject ooiroma preOnhned or inlasrad XMF schema usingiOe ReaOXmi S RoaaXmiSchemoOjSS InferXmlSchema methods of the DataSet. Nott th at sftar sou Oave hddaO a DetoToble cs o mamTa- of jh e nabtes collection of oneDojahat yhOonsaotcdO ittoteacollactiTOof tablstofonyotherDatshat Wheoyothtaj crcojeaDatahableJtSoet nriOhot a tchsma tthnti httruclucet To definhtgaschamcofthetable yodmost create TogodO Dot.aColamnobicci.sto OtO Columnc s sH ccti so hfinfjabls.Youdnnalao dctineantialaeyksycolLjms tt stl eiable and create andaddConstrainj. on-actsintheConatsamStcdlleationdethe ioOie. tatar you havo dahnsd tho schema tor oDotanante yhb canadO tswsoCdaiatothc tshie Or adding Data how objaotstd the Rowe aollsct-onoftn e OdsOi You arc roO raqldaenSssunsayo 0 toittisT iOlcN lmc psoprstywesd tf Licreat.e a DataTaStclo oa con spccilythchn-hsrtyaianot.lia ntme oryou tmlta sa it. emot.y. HoweveO whenhnuaddeeTnlewithdotaTableNamedatheio aDataSet the table will be given an ibstema nltl defbuhngmeorTaalleiV etast-ng wit.O Table TotTablcOl Figute T.COshows ancxample of cihatrngonewDoSaToble and aDnt.aScisnOthcn adding theDataTebieinnstha DateOetobjcct. Table
