传送参数:
response.write("<script>window.open('*.aspx?id="+this.dropdownlist1.selectindex+"&id1="+...+"')</script>")
接收参数:
string a = request.querystring("id");
string b = request.querystring("id1");
2.为按钮添加对话框
button1.attributes.add("onclick","return confirm('确认?')");
button.attributes.add("onclick","if(confirm('are you sure...?')){return true;}else{return false;}")
3.删除表格选定记录
int intempid = (int)mydatagrid.datakeys[e.item.itemindex];
string deletecmd = "delete from employee where emp_id = " + intempid.tostring()
4.删除表格记录警告
private void datagrid_itemcreated(object sender,datagriditemeventargs e)
{
switch(e.item.itemtype)
{
case listitemtype.item :
case listitemtype.alternatingitem :
case listitemtype.edititem:
tablecell mytablecell;
mytablecell = e.item.cells[14];
linkbutton mydeletebutton ;
mydeletebutton = (linkbutton)mytablecell.controls[0];
mydeletebutton.attributes.add("onclick","return confirm('您是否确定要删除这条信息');");
break;
default:
break;
}
}
5.点击表格行链接另一页
private void grdcustomer_itemdatabound(object sender, system.web.ui.webcontrols.datagriditemeventargs e)
{
//点击表格打开
if (e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)
e.item.attributes.add("onclick","window.open('default.aspx?id=" + e.item.cells[0].text + "');");
}
双击表格连接到另一页
在itemdatabind事件中
if(e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)
{
string orderitemid =e.item.cells[1].text;
...
e.item.attributes.add("ondblclick", "location.href='../shippedgrid.aspx?id=" + orderitemid + "'");
}
双击表格打开新一页
if(e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)
{
string orderitemid =e.item.cells[1].text;
...
e.item.attributes.add("ondblclick", "open('../shippedgrid.aspx?id=" + orderitemid + "')");
}
★特别注意:【?id=】 处不能为 【?id =】
6.表格超连接列传递参数
<asp:hyperlinkcolumn target="_blank" headertext="id号" datatextfield="id" navigateurl="aaa.aspx?id='<%# databinder.eval(container.dataitem, "数据字段1")%>' & name='<%# databinder.eval(container.dataitem, "数据字段2")%>' />
7.表格点击改变颜色
if (e.item.itemtype == listitemtype.item ||e.item.itemtype == listitemtype.alternatingitem)
{
e.item.attributes.add("onclick","this.style.backgroundcolor='#99cc00';this.style.color='buttontext';this.style.cursor='default';");
}
写在datagrid的_itemdatabound里
if (e.item.itemtype == listitemtype.item ||e.item.itemtype == listitemtype.alternatingitem)
{
e.item.attributes.add("onmouseover","this.style.backgroundcolor='#99cc00';this.style.color='buttontext';this.style.cursor='default';");
e.item.attributes.add("onmouseout","this.style.backgroundcolor='';this.style.color='';");
}
8.关于日期格式
日期格式设定
dataformatstring="{0:yyyy-mm-dd}"
我觉得应该在itembound事件中
e.items.cell["你的列"].text=datetime.parse(e.items.cell["你的列"].text.tostring("yyyy-mm-dd"))
9.获取错误信息并到指定页面
不要使用response.redirect,而应该使用server.transfer
e.g
// in global.asax
protected void application_error(object sender, eventargs e) {
if (server.getlasterror() is httpunhandledexception)
server.transfer("myerrorpage.aspx");
//其余的非httpunhandledexception异常交给asp.net自己处理就okay了 :)
}
redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理
10.清空cookie
cookie.expires=[datetime];
response.cookies("username").expires = 0
11.自定义异常处理
//自定义异常处理类
using system;
using system.diagnostics;
namespace myappexception
{
/// <summary>
/// 从系统异常类applicationexception继承的应用程序异常处理类。
/// 自动将异常内容记录到windows nt/2000的应用程序日志
/// </summary>
public class appexception:system.applicationexception
{
public appexception()
{
if (applicationconfiguration.eventlogenabled)
logevent("出现一个未知错误。");
}
public appexception(string message)
{
logevent(message);
}
public appexception(string message,exception innerexception)
{
logevent(message);
if (innerexception != null)
{
logevent(innerexception.message);
}
}
//日志记录类
using system;
using system.configuration;
using system.diagnostics;
using system.io;
using system.text;
using system.threading;
namespace myeventlog
{
/// <summary>
/// 事件日志记录类,提供事件日志记录支持
/// <remarks>
/// 定义了4个日志记录方法 (error, warning, info, trace)
/// </remarks>
/// </summary>
public class applicationlog
{
/// <summary>
/// 将错误信息记录到win2000/nt事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void writeerror(string message)
{
writelog(tracelevel.error, message);
}
/// <summary>
/// 将警告信息记录到win2000/nt事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void writewarning(string message)
{
writelog(tracelevel.warning, message);
}
/// <summary>
/// 将提示信息记录到win2000/nt事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void writeinfo(string message)
{
writelog(tracelevel.info, message);
}
/// <summary>
/// 将跟踪信息记录到win2000/nt事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void writetrace(string message)
{
writelog(tracelevel.verbose, message);
}
/// <summary>
/// 格式化记录到事件日志的文本信息格式
/// <param name="ex">需要格式化的异常对象</param>
/// <param name="catchinfo">异常信息标题字符串.</param>
/// <retvalue>
/// <para>格式后的异常信息字符串,包括异常内容和跟踪堆栈.</para>
/// </retvalue>
/// </summary>
public static string formatexception(exception ex, string catchinfo)
{
stringbuilder strbuilder = new stringbuilder();
if (catchinfo != string.empty)
{
strbuilder.append(catchinfo).append("/r/n");
}
strbuilder.append(ex.message).append("/r/n").append(ex.stacktrace);
return strbuilder.tostring();
}
/// <summary>
/// 实际事件日志写入方法
/// <param name="level">要记录信息的级别(error,warning,info,trace).</param>
/// <param name="messagetext">要记录的文本.</param>
/// </summary>
private static void writelog(tracelevel level, string messagetext)
{
try
{
eventlogentrytype logentrytype;
switch (level)
{
case tracelevel.error:
logentrytype = eventlogentrytype.error;
break;
case tracelevel.warning:
logentrytype = eventlogentrytype.warning;
break;
case tracelevel.info:
logentrytype = eventlogentrytype.information;
break;
case tracelevel.verbose:
logentrytype = eventlogentrytype.successaudit;
break;
default:
logentrytype = eventlogentrytype.successaudit;
break;
}
eventlog eventlog = new eventlog("application", applicationconfiguration.eventlogmachinename, applicationconfiguration.eventlogsourcename );
//写入事件日志
eventlog.writeentry(messagetext, logentrytype);
}
catch {} //忽略任何异常
}
} //class applicationlog
}
12.panel 横向滚动,纵向自动扩展
<asp:panel ></asp:panel>
13.回车转换成tab
<script language="javascript" for="document" event="onkeydown">
if(event.keycode==13 && event.srcelement.type!='button' && event.srcelement.type!='submit' && event.srcelement.type!='reset' && event.srcelement.type!=''&& event.srcelement.type!='textarea');
event.keycode=9;
</script>
onkeydown="if(event.keycode==13) event.keycode=9"
http://dotnet.aspx.cc/exam/enter2tab.aspx
14.datagrid超级连接列
datanavigateurlfield="字段名" datanavigateurlformatstring="http://xx/inc/delete.aspx?id={0}"
15.datagrid行随鼠标变色
private void dgzf_itemdatabound(object sender, system.web.ui.webcontrols.datagriditemeventargs e)
{
if (e.item.itemtype!=listitemtype.header)
{
e.item.attributes.add( "onmouseout","this.style.backgroundcolor=/""+e.item.style["background-color"]+"/"");
e.item.attributes.add( "onmouseover","this.style.backgroundcolor=/""+ "#eff3f7"+"/"");
}
}
16.模板列
<asp:templatecolumn visible="false" sortexpression="demo" headertext="id">
<itemtemplate>
<asp:label text='<%# databinder.eval(container.dataitem, "articleid")%>' runat="server" width="80%" id="lblcolumn" />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="选中">
<headerstyle wrap="false" horizontalalign="center"></headerstyle>
<itemtemplate>
<asp:checkbox id="chkexport" runat="server" />
</itemtemplate>
<edititemtemplate>
<asp:checkbox id="chkexporton" runat="server" enabled="true" />
</edititemtemplate>
</asp:templatecolumn>
后台代码
protected void checkall_checkedchanged(object sender, system.eventargs e)
{
//改变列的选定,实现全选或全不选。
checkbox chkexport ;
if( checkall.checked)
{
foreach(datagriditem odatagriditem in mydatagrid.items)
{
chkexport = (checkbox)odatagriditem.findcontrol("chkexport");
chkexport.checked = true;
}
}
else
{
foreach(datagriditem odatagriditem in mydatagrid.items)
{
chkexport = (checkbox)odatagriditem.findcontrol("chkexport");
chkexport.checked = false;
}
}
}
17.数字格式化
【<%#container.dataitem("price")%>的结果是500.0000,怎样格式化为500.00?】
<%#container.dataitem("price","{0:¥#,##0.00}")%>
int i=123456;
string s=i.tostring("###,###.00");
18.日期格式化
【aspx页面内:<%# databinder.eval(container.dataitem,"company_ureg_date")%>
显示为: 2004-8-11 19:44:28
我只想要:2004-8-11 】
<%# databinder.eval(container.dataitem,"company_ureg_date","{0:yyyy-m-d}")%>
应该如何改?
【格式化日期】
取出来,一般是object
((datetime)objectfromdb).tostring("yyyy-mm-dd");
【日期的验证表达式】
a.以下正确的输入格式: [2004-2-29], [2004-02-29 10:29:39 pm], [2004/12/31]
^((/d{2}(([02468][048])|([13579][26]))[/-///s]?((((0?[13578])|(1[02]))[/-///s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[/-///s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[/-///s]?((0?[1-9])|([1-2][0-9])))))|(/d{2}(([02468][1235679])|([13579][01345789]))[/-///s]?((((0?[13578])|(1[02]))[/-///s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[/-///s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[/-///s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(/s(((0?[1-9])|(1[0-2]))/:([0-5][0-9])((/s)|(/:([0-5][0-9])/s))([am|pm|am|pm]{2,2})))?$
b.以下正确的输入格式:[0001-12-31], [9999 09 30], [2002/03/03]
^/d{4}[/-///s]?((((0[13578])|(1[02]))[/-///s]?(([0-2][0-9])|(3[01])))|(((0[469])|(11))[/-///s]?(([0-2][0-9])|(30)))|(02[/-///s]?[0-2][0-9]))$
【大小写转换】
httputility.htmlencode(string);
httputility.htmldecode(string)
19.如何设定全局变量
global.asax中
application_start()事件中
添加application[属性名] = xxx;
就是你的全局变量
20.怎样作到hyperlinkcolumn生成的连接后,点击连接,打开新窗口?
hyperlinkcolumn有个属性target,将器值设置成"_blank"即可.(target="_blank")
【aspnetmenu】点击菜单项弹出新窗口
在你的menudata.xml文件的菜单项中加入urltarget="_blank"
如:
<?xml version="1.0" encoding="gb2312"?>
<menudata imagesbaseurl="images/">
<menugroup>
<menuitem label="内参信息" url="infomation.aspx" >
<menugroup id="bbc">
<menuitem label="公告信息" url="infomation.aspx" urltarget="_blank" lefticon="file.gif"/>
<menuitem label="编制信息简报" url="newinfo.aspx" lefticon="file.gif" />
......
最好将你的aspnetmenu升级到1.2版
21.委托讨论
http://community.csdn.net/expert/topic/2651/2651579.xml?temp=.7183191
http://dev.csdn.net/develop/article/22/22951.shtm
22.读取datagrid控件textbox值
foreach(datagrid dgi in yourdatagrid.items)
{
textbox tb = (textbox)dgi.findcontrol("yourtextboxid");
tb.text....
}
23.在datagrid中有3个模板列包含textbox分别为 dg_shuliang (数量) dg_danjian(单价) dg_jine(金额)分别在5.6.7列,要求在录入数量及单价的时候自动算出金额即:数量*单价=金额还要求录入时限制为 数值型.我如何用客户端脚本实现这个功能?
〖思归〗
<asp:templatecolumn headertext="数量">
<itemtemplate>
<asp:textbox id="shuliang" runat='server' text='<%# databinder.eval(container.dataitem,"dg_shuliang")%>'
onkeyup="javascript:docal()"
/>
<asp:regularexpressionvalidator id="revs" runat="server" controltovalidate="shuliang" errormessage="must be integer" validationexpression="^/d+$" />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="单价">
<itemtemplate>
<asp:textbox id="danjian" runat='server' text='<%# databinder.eval(container.dataitem,"dg_danjian")%>'
onkeyup="javascript:docal()"
/>
<asp:regularexpressionvalidator id="revs2" runat="server" controltovalidate="danjian" errormessage="must be numeric" validationexpression="^/d+(/./d*)?$" />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="金额">
<itemtemplate>
<asp:textbox id="jine" runat='server' text='<%# databinder.eval(container.dataitem,"dg_jine")%>' />
</itemtemplate>
</asp:templatecolumn>
<script language="javascript">
function docal()
{
var e = event.srcelement;
var row = e.parentnode.parentnode;
var txts = row.all.tags("input");
if (!txts.length || txts.length < 3)
return;
var q = txts[txts.length-3].value;
var p = txts[txts.length-2].value;
if (isnan(q) || isnan(p))
return;
q = parseint(q);
p = parsefloat(p);
txts[txts.length-1].value = (q * p).tofixed(2);
}
</script>
24.datagrid选定比较底下的行时,为什么总是刷新一下,然后就滚动到了最上面,刚才选定的行因屏幕的关系就看不到了
page_load
page.smartnavigation=true
25.在datagrid中修改数据,当点击编辑键时,数据出现在文本框中,怎么控制文本框的大小 ?
private void datagrid1_itemdatabound(obj sender,datagriditemeventargs e)
{
for(int i=0;i<e.item.cells.count-1;i++)
if(e.item.itemtype==listitemtype.edittype)
{
e.item.cells[i].attributes.add("width", "80px")
}
}
26.对话框
private static string scriptbegin = "<script language=/"javascript/">";
private static string scriptend = "</script>";
public static void confirmmessagebox(string pagetarget,string content)
{
string confirmcontent="var retvalue=window.confirm('"+content+"');"+"if(retvalue){window.location='"+pagetarget+"';}";
confirmcontent=scriptbegin + confirmcontent + scriptend;
page parameterpage = (page)system.web.httpcontext.current.handler;
parameterpage.registerstartupscript("confirm",confirmcontent);
//response.write(strscript);
}
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