发布于 2016-05-23 10:15:01 | 129 次阅读 | 评论: 0 | 来源: 网友投递
ASP.NET
ASP.NET 是.NET FrameWork的一部分，是一项微软公司的技术，是一种使嵌入网页中的脚本可由因特网服务器执行的服务器端脚本技术，它可以在通过HTTP请求文档时再在Web服务器上动态创建它们。 指 Active Server Pages（动态服务器页面） ，运行于 IIS（Internet Information Server 服务，是Windows开发的Web服务器）之中的程序 。
<form runat="server">
<asp:DataGrid AutoGenerateColumns="false" OnItemCreated="itemcreate" DataKeyField="link_id" ID="mydg" runat="server" >
<columns>
<asp:TemplateColumn>
<headertemplate>
<asp:CheckBox ID="checkall" OnCheckedChanged="chkall_onchanged" AutoPostBack="true" runat="server"></asp:CheckBox>
</headertemplate>
<itemtemplate>
<asp:CheckBox ID="checkdel" runat="server"></asp:CheckBox>
</itemtemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="link_id" HeaderText="Link_Id" ></asp:BoundColumn>
<asp:BoundColumn HeaderText="网站名称" DataField="sitename" />
<asp:BoundColumn HeaderText="网站地址" DataField="url" />
<asp:BoundColumn HeaderText="网站介绍" DataField="intro" />
<asp:BoundColumn HeaderText="网站评分" DataField="grade" />
<asp:BoundColumn HeaderText="提交时间" DataField="submit_date"></asp:BoundColumn>
</columns>
</asp:DataGrid>
<asp:Label ID="lb1" runat="server"></asp:Label>
<asp:Button ID="btn1" Text="删 除" runat="server" OnClick="btn1_onclick"></asp:Button>
<asp:Button ID="ok" OnClick="ok_click" Text="保存修改" runat="server"></asp:Button>
<asp:Button ID="cancel" OnClick="cancel_click" Text="取消修改" runat="server"></asp:Button>
</form>
<%@ import namespace="system.data"%>
<%@ import namespace="system.data.oledb"%>
<script language="vb" runat="server">
dim conn as oledbconnection
dim ds as dataset
sub Page_load(sender as object,e as eventargs)
if not ispostback then
calldb()
else
ds=session("ds")
end if
end sub
sub calldb()
conn = new oledbconnection("provider=Microsoft.jet.oledb.4.0;data source="& server.MapPath("wwwlink.mdb"))
dim sqlstr="select * from link"
conn.open()
dim adp as new oledbdataAdapter(sqlstr,conn)
ds =new dataset()
adp.fill(ds,"link")
mydg.DataSource=ds.tables("link").defaultview
mydg.databind()
conn.close()
session("ds")=ds
end sub
sub btn1_onclick(sender as object, e as eventargs)
dim chk as checkbox
dim id as string
dim datag as datagriditem
conn = new oledbconnection("provider=Microsoft.jet.oledb.4.0;data source="& server.MapPath("wwwlink.mdb"))
dim sqlstr as string
dim cmd as oledbcommand
dim i as integer
'for each datag in mydg.items
for i=0 to mydg.items.count-1
'chk=ctype(datag.findcontrol("checkdel"),checkbox)
'chk=datag.findcontrol("checkdel")
chk=mydg.items(i).cells(0).findcontrol("checkdel")
if chk.checked then
id=cstr(mydg.items(i).cells(1).text)
'id=cstr(mydg.datakeys(datag.itemindex))
conn.open()
sqlstr="delete from link where link_id=" & id
cmd=new oledbcommand(sqlstr,conn)
cmd.executenonquery
'ds.tables("link").rows(i).delete()
conn.close()
end if
next
'session("ds")=ds
'mydg.edititemindex=-1
'mydg.datasource=ds.tables("link").defaultview
'mydg.databind()
calldb()
end sub
sub cancel_click(sender as object, e as eventargs)
calldb()
end sub
sub ok_click(sender as object, e as eventargs)
conn=new oledbconnection("provider=Microsoft.jet.oledb.4.0;data source="&server.MapPath("wwwlink.mdb"))
dim adp as new oledbdataadapter("select * from link",conn)
dim ocb as new oledbcommandbuilder(adp)
adp.updatecommand=ocb.getupdatecommand()
adp.deletecommand=ocb.getdeletecommand()
adp.update(ds,"link")
calldb()
end sub
dim checka as checkbox
sub itemcreate(sender as object, e as datagriditemeventargs)
if (e.item.itemtype=Listitemtype.Header) then
checka=e.item.findcontrol("checkall")
end if
end sub
sub chkall_onchanged(sender as object,e as eventargs)
dim i as integer
if checka.checked=true then
for i=0 to mydg.items.count-1
dim chk as checkbox=mydg.items(i).cells(0).findcontrol("checkdel")
chk.checked=true
next
else
for i=0 to mydg.items.count-1
dim chk as checkbox=mydg.items(i).cells(0).findcontrol("checkdel")
chk.checked=false
next
end if
end sub
</script>