ASP网站制作之DataGrid罕见存眷成绩办理计划

在实现ERP等高端的ASP应用时，用户需要提供核心的经营资料，需要ASP商有很高的信用度。楼上说交互性不好，太牵强了吧。在微软提供的一套框架中，利用asp做网站，开发效率高，使用人数少，减少不必要的开销。交互性是互动方式，是有开发人员决定的。datagrid|办理|成绩Introduction
TheDataGridWebservercontrolisapowerfultoolfordisplayinginformationfromadatasource.Itiseasytouse;youcandisplayeditabledatainaprofessional-lookinggridbysettingonlyafewproperties.Atthesametime,thegridhasasophisticatedobjectmodelthatprovidesyouwithgreatflexibilityinhowyoudisplaythedata.

Thispaperaddressessomeofthequestionsaboutcustomizinggriddisplaythatarecommonlyaskedinnewsgroups,onWebsites,andinotherdeveloperforums.Thetechniquesdescribedherearesometimesquitesimpleandatothertimessomewhatinvolved.Ineachcase,however,theyaddressaquestionofhowtogobeyondthebasicfunctionalityoftheDataGridcontrol.

Thispaperassumesthatyouarealreadyfamiliarwiththecontrol―howtoaddittoaformandconfigureittodisplaydata.Youshouldalsounderstandhowtoputarowinthegridintoeditmodeandotherbasictasks.(Fordetails,seeDataGridWebServerControl.)Finally,youwillfindithelpfultoknowhowtoworkwithtemplates―addingtemplatecolumnstothegridandlayoutoutcontrolsinsideatemplate.

WindowsFormsversusWebFormsDataGridControl
TheWebFormsDataGridcontrolisnotthesameastheWindowsFormsequivalent.Itisacommon(andnotunreasonable)assumptionthattheyarethesamecontrol,oratleasthaveidenticalfunctionality.However,theentireprogrammingparadigmforWebFormsisquitedifferentfromthatforWindowsForms.Forexample,WebFormspagesperformaroundtriptotheserverforanyprocessing;theymustmanagestate;theyfeatureaverydifferentdata-bindingmodel;andsoon.

Becauseofthesedifferences,therearealsosignificantdifferencesintheirrespectivecontrols,includingtheDataGridcontrol.Asageneralrule,theWebFormsDataGridcontrolincludeslessbuilt-infunctionality.AfewexamplesofdifferencesintheWebFormsDataGridcontrolare:

Itdoesnotinherentlysupportmaster-detaildatastructures.
AswithotherWebservercontrols,itdoesnotsupporttwo-waydatabinding.Ifyouwanttoupdatedata,youmustwritecodetodothisyourself.
Youcanonlyeditonerowatatime.
Itdoesnotinherentlysupportsorting,althoughitraiseseventsyoucanhandleinordertosortthegridcontents.
Ontheotherhand:

YoucanbindtheWebFormsDataGridtoanyobjectthatsupportstheIEnumerableinterface.
TheWebFormsDataGridcontrolsupportspaging.
ItiseasytocustomizetheappearanceandlayoutoftheWebFormsDataGridcontrolascomparedtotheWindowsFormsone.(Detailsareprovidedlaterinthispaper.)
ControllingColumnWidth,Height,andAlignment
Bydefault,theDataGridcontrolsizesrowsandcolumnstofittheoverallheightandwidththatyouhaveassignedtothegrid.Withintheoverallgridwidth,itsizescolumnsaccordingtothewidthofthecolumnheadingtext.Alldataisdisplayedleft-justifiedbydefault.

Tocontrolcolumncharacteristics,youshouldturnoffautocolumngenerationbysettingtheAutoGenerateColumnspropertytofalse.Infact,youshouldsetthispropertytotrueonlyforshort-termuses,suchasquickproof-of-conceptpagesordemonstrations.Forproductionapplications,youshouldaddcolumnsexplicitly.Theindividualcolumnscanbeboundcolumnsortemplatecolumns.

Tosetthecolumnwidth,youcreateastyleelementforthatcolumnandthensettheelementsWidthpropertytostandardunits(say,pixels).ThefollowingexampleshowsyouwhattheHTMLsyntaxlookslikeforanItemStyleelementwithitsWidthpropertyset.

<asp:BoundColumnDataField="title"SortExpression="title"
HeaderText="Title">
<ItemStyleWidth="100px"></ItemStyle>
</asp:BoundColumn>
Alternatively,youcandothesamethingbysettingtheItemStylepropertydirectlyintheelement,asinthefollowingexample:

<asp:BoundColumnItemStyle-Width="100px"DataField="title"
SortExpression="title"HeaderText="Title">
</asp:BoundColumn>
Youcansetalignmentusingthestyleelement,settingitto"Right,""Left,"andothervaluesdefinedintheHorizontalAlignenumeration.(InVisualStudio,alignmentisavailableforindividualcolumnsintheFormattabofthegridsPropertybuilder.)Thefollowingisanexample:

<asp:BoundColumnDataField="title"SortExpression="title"
HeaderText="Title">
<ItemStyleWidth="100px"HorizontalAlign="Right"></ItemStyle>
</asp:Bound</p>

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asp,jsp,php是web开发的三大技术,asp简单易用且有microsoft做靠山,jsp功能强大是因为有java支持,php则开源跨平台.在国内,asp应用范围最广,jsp发展势头最猛,php则处于劣势.这可能与公司的支持以及技术的培训有关.

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掌握asp的特性而且一定要知道为什么。

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如何学好ASP,以前也有人问过,把回答给你转过来看看能否对你有帮助: