1. 打开新的窗口并传送参数:
//
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 style="overflow-x:scroll;overflow-y:auto;"></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
"

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]))$
19【大小写转换】
HttpUtility.HtmlEncode(string);
HttpUtility.HtmlDecode(string)
;
20.如何设定全局变量
Global.asax中
Application_Start()事件中
添加Application[属性名] = xxx;
21.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
22.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
23.读取DataGrid控件TextBox值
foreach
(DataGrid dgi
in
yourDataGrid.Items)

{
TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");
tb.Text
.
}
24.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?
<asp:TemplateColumn HeaderText="数量">
<ItemTemplate>
<asp:TextBox id="ShuLiang" runat=’server’ Text=’<%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%>’
οnkeyup="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")%>’
οnkeyup="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>
25.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
26.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")
}
}
27.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);
}
28.将时间格式化:string aa=DateTime.Now.ToString("yyyy年MM月dd日");
1.1
取当前年月日时分秒
currentTime
=
System.DateTime.Now;
1.2
取当前年
int
年
=
DateTime.Now.Year;
1.3
取当前月
int
月
=
DateTime.Now.Month;
1.4
取当前日
int
日
=
DateTime.Now.Day;
1.5
取当前时
int
时
=
DateTime.Now.Hour;
1.6
取当前分
int
分
=
DateTime.Now.Minute;
1.7
取当前秒
int
秒
=
DateTime.Now.Second;
1.8
取当前毫秒
int 毫秒= DateTime.Now.Millisecond;
29.自定义分页代码
//
先定义变量 :
public
static
int
pageCount;
//
总页面数
public
static
int
curPageIndex
=
1
;
//
当前页面
//
下一页:
if
(DataGrid1.CurrentPageIndex < (DataGrid1.PageCount
-
1
))

{
DataGrid1.CurrentPageIndex += 1;
curPageIndex+=1;
}
bind();
//
DataGrid1数据绑定函数
//
上一页:
if
(DataGrid1.CurrentPageIndex >
0
)

{
DataGrid1.CurrentPageIndex += 1;
curPageIndex-=1;
}
bind();
//
DataGrid1数据绑定函数
//
直接页面跳转:
int
a
=
int
.Parse(JumpPage.Value.Trim());
//
JumpPage.Value.Trim()为跳转值
if
(a<DataGrid1.PageCount)

{
this.DataGrid1.CurrentPageIndex=a;
}
bind();
30.DataGrid使用
//
添加删除确认:
private
void
DataGrid1_ItemCreated(
object
sender, System.Web.UI.WebControls.DataGridItemEventArgs e)

{
foreach(DataGridItem di in this.DataGrid1.Items)

{
if(di.ItemType==ListItemType.Item||di.ItemType==ListItemType.AlternatingItem)

{
((LinkButton)di.Cells[8].Controls[0]).Attributes.Add("onclick","return confirm(’确认删除此项吗?’);");
}
}
}

//
样式交替:
ListItemType itemType
=
e.Item.ItemType;

if
(itemType
==
ListItemType.Item )

{
e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor=’#FFFFFF’;";
e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor=’#d9ece1’;cursor=’hand’;" ;
}
else
if
( itemType
==
ListItemType.AlternatingItem)

{
e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor=’#a0d7c4’;";
e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor=’#d9ece1’;cursor=’hand’;" ;
}

//
添加一个编号列:
DataTable dt
=
c.ExecuteRtnTableForAccess(sqltxt);
//
执行sql返回的DataTable
DataColumn dc
=
dt.Columns.Add(
"
number
"
,System.Type.GetType(
"
System.String
"
));

for
(
int
i
=
0
;i<dt.Rows.Count;i
++
)

{
dt.Rows[i]["number"]=(i+1).ToString();
}

DataGrid1.DataSource
=
dt;
DataGrid1.DataBind();

//
DataGrid1中添加一个CheckBox,页面中添加一个全选框
private
void
CheckBox2_CheckedChanged(
object
sender, System.EventArgs e)

{
foreach(DataGridItem thisitem in DataGrid1.Items)

{
((CheckBox)thisitem.Cells[0].Controls[1]).Checked=CheckBox2.Checked;
}
}

//
将当前页面中DataGrid1显示的数据全部删除
foreach
(DataGridItem thisitem
in
DataGrid1.Items)

{
if(((CheckBox)thisitem.Cells[0].Controls[1]).Checked)

{
string strloginid= DataGrid1.DataKeys[thisitem.ItemIndex].ToString();
Del (strloginid); //删除函数
}
}