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标题: ASP网站制作之DataGrid罕见存眷成绩办理计划 [打印本页]

作者: 小女巫 时间: 2015-1-16 23:10
标题: 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.

作者: 简单生活 时间: 2015-1-20 07:45
接下来就不能纸上谈兵了，最好的方法其实是实践。实践，只能算是让你掌握语言特性用的。而提倡做实际的Project也不是太好，因为你还没有熟练的能力去综合各种技术，这样只能使你自己越来越迷糊。

作者: 兰色精灵 时间: 2015-1-29 05:12
掌握asp的特性而且一定要知道为什么。

作者: 不帅 时间: 2015-1-30 14:48
ASP主要是用好六个对象，其实最主要的是用好其中两个：response和request，就可以随心所欲地控制网页变换和响应用户动作了。

作者: 愤怒的大鸟 时间: 2015-2-6 13:28
我们必须明确一个大方向，不要只是停留在因为学而去学,我们应有方向应有目标.

作者: 透明 时间: 2015-2-16 07:07
多看多学多思。多看一些关于ASP的书籍，一方面可以扩展知识面一方面可以鉴借别人是如何掌握、运用ASP的;多学善于关注别人，向同学老师多多学习，不论知识的大小;多思则是要将学到的知识灵活运用。

作者: 小女巫 时间: 2015-3-11 22:03
交流是必要的，不管是生活还是学习我们都要试着去交流，通过交流我们可以学到很多我们自己本身所没有的知识，可以分享别人的经验甚至经历。

作者: 海妖 时间: 2015-3-19 14:49
以HTML语言整合(HTML负责界面上，ASP则负责功能上)形成一个B/S(浏览器/服务器)模式的网页程序。

作者: 第二个灵魂 时间: 2015-3-28 13:33
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:

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