Quick Reference Guide VLINQ.docx
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Quick Reference Guide VLINQ.docx
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QuickReferenceGuideVLINQ
QuickReferenceGuide
OnceVisualLinqQueryBuilderisinstalled,youcancreateanewprojectoropenanexistingproject(C#orVB.Net).Fromthisdesigneryouwillbeabletocreate,modifyanddeletequeries.Wheneditingaquery,thequerydesignerwillappearandletyoubuildyourqueryvisually.Ateachtimethedesignerissaved,thecorrespondingcode(C#orVB.Net)willbegenerated.Thenthequeriesarereadytobeusedbyyourproject.ThefollowingstepsareforthefirsttimeusersofVisualLinqQueryBuilder.
-Createanewproject
IfyouinstalledVisualLINQQueryBuilder,youcancreateanewprojectoropenanexistingproject(C#orVB)inVisualStudio.
-AddaLINQtoSQLclass
Onceaprojectiscreated,aLINQtoSQLclassshouldbeaddedtotheproject.
-AddconnectiontoSQLdatabase
IfLinqtoSQLclassisadded,a.dbmlfileisaddedtotheproject.Youopenthe.dbmlandcansettheconnectiontoSQLdatabasebyclicking“ServerExplorer”and“AddConnection”
ToworkwithLINQtoSQLandVisualLINQQueryBuilderinVisualStudio2008,youwillneedadatabasethatyoucanquery.Ifyoualreadyhadadatabase,youcansettheconnectiontothedatabasebyclicking“ServerExplorer”.
Otherwise,youcanaccessthecopyoftheNorthwinddatabasethataccompaniestheC#samplesthatshipwithVisualStudio2008.YoucanalsodownloadthelatestC#samplesfromTheNorthwind.mdfwillbefoundinthedirectory,CSharpSamples\LinqSamples\Data.
ThesetupguidelinefortheSQLdatabasecanalsobefoundinCharlieCarvert’sbolg.
YoucansettheconnectiontothecopyofNorthwind.mdforyourdatabase.
Onceconnectionisadded,youcannavigatetotheobjectsinthedatabaseandselectatableyouwanttoquery.
-Addthedesignertotheproject
Addanewitem,“VLinqqueries”totheproject.Whenopeningthenew.vlinqfileaddedtoyourproject,thequerybagdesignerwillappear.
-SettheconnectiontoVLINQ
InthePropertiesofthevlinq,setConnectionStringtothedatabaseyouwanttoquery.Select“VisualstudioConnection”andthedatabase.
-Createanewquery
Ifyouopenthe.vlinqfileaddedtotheproject,youcanseequerybagdesigner.Inthequerybagdesigner,youcancreateaqueryusingthequerybagdesignerbyclickinganicon“Createanewquery”.
-Editthequeryinthequerybagdesigner
-Queryincollapsedmode
-Previewthequeryresult
Onceyoueditthequeryand“save”the.vlinqfile,thecodeisgenerated.Ifyouclick“Preview”,youcanseethequeryresultinthebelow.
-Viewthegeneratedcode
Querydesignercodeisgeneratedifyousavethequery.Youcanbuildtheprojectusingthecode.
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