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
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
"
);
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.Inf:
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"
示例: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);
}
----------------------------------------
27. 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;
28.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();
29.DataGrid使用:
//
1.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?');
"
);
}
}
}
//
2.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';
"
;
}
//
3.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();
//
4.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;
}
}
//
5.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
}
}
30.当文件在不同目录下,需要获取数据库连接字符串(如果连接字符串放在Web.config,然后在Global.asax中初始化)
在Application_Start中添加以下代码:
Application[
"
ConnStr
"
]
=
this
.Context.Request.PhysicalApplicationPath
+
ConfigurationSettings.AppSettings[
"
ConnStr
"
].ToString();
31. 变量.ToString()
字符型转换 转为字符串
12345
.ToString(
"
n
"
);
//
生成 12,345.00
12345
.ToString(
"
C
"
);
//
生成 ¥12,345.00
12345
.ToString(
"
e
"
);
//
生成 1.234500e+004
12345
.ToString(
"
f4
"
);
//
生成 12345.0000
12345
.ToString(
"
x
"
);
//
生成 3039 (16进制)
12345
.ToString(
"
p
"
);
//
生成 1,234,500.00%
32、变量.Substring(参数1,参数2);
截取字串的一部分,参数1为左起始位数,参数2为截取几位。
如:
string
s1
=
str.Substring(
0
,
2
);
34.在自己的网站上登陆其他网站:(如果你的页面是通过嵌套方式的话,因为一个页面只能有一个FORM,这时可以导向另外一个页面再提交登陆信息)
<
SCRIPT
language
="javascript"
>
<!--
function
gook(pws)
{
frm.submit();
}
//-->
</
SCRIPT
>
<
body
leftMargin
="0"
topMargin
="0"
onload
="javascript:gook()"
marginwidth
="0"
marginheight
="0"
>
<
form
name
="frm"
action
="http://220.194.55.68:6080/login.php?retid=7259"
method
="post"
>
<
table
>
<
tr
>
<
td
>
<
input
id
="f_user"
type
="hidden"
size
="1"
name
="f_user"
runat
="server"
>
<
input
id
="f_domain"
type
="hidden"
size
="1"
name
="f_domain"
runat
="server"
>
<
input
class
="box"
id
="f_pass"
type
="hidden"
size
="1"
name
="pwshow"
runat
="server"
>
<
INPUT
id
="lng"
type
="hidden"
maxLength
="20"
size
="1"
value
="5"
name
="lng"
>
<
INPUT
id
="tem"
type
="hidden"
size
="1"
value
="2"
name
="tem"
>
</
td
>
</
tr
>
</
table
>
</
form
>
文本框的名称必须是你要登陆的网页上的名称,如果源码不行可以用vsniffer 看看。
下面是获取用户输入的登陆信息的代码:
string
name;
name
=
Request.QueryString[
"
EmailName
"
];
try
{
int
a
=
name.IndexOf(
"
@
"
,
0
,name.Length);
f_user.Value
=
name.Substring(
0
,a);
f_domain.Value
=
name.Substring(a
+
1
,name.Length
-
(a
+
1
));
f_pass.Value
=
Request.QueryString[
"
Psw
"
];
}
catch
{
Script.Alert(
"
错误的邮箱!
"
);
Server.Transfer(
"
index.aspx
"
);
}
35.警告窗口
///
<summary>
///
服务器端弹出alert对话框
///
</summary>
///
<param name="str_Message">
提示信息,例子:"不能为空!"
</param>
///
<param name="page">
Page类
</param>
public
void
Alert(
string
str_Message,Page page)
{
page.RegisterStartupScript(
""
,
"
<script>alert('
"
+
str_Message
+
"
');</script>
"
);
}
36.重载此警告窗口,使某控件获得焦点
///
<summary>
///
服务器端弹出alert对话框,并使控件获得焦点
///
</summary>
///
<param name="str_Ctl_Name">
获得焦点控件Id值,比如:txt_Name
</param>
///
<param name="str_Message">
提示信息,例子:"请输入您姓名!"
</param>
///
<param name="page">
Page类
</param>
public
void
Alert(
string
str_Ctl_Name,
string
str_Message,Page page)
{
page.RegisterStartupScript(
""
,
"
<script>alert('
"
+
str_Message
+
"
');document.forms(0).
"
+
str_Ctl_Name
+
"
.focus(); document.forms(0).
"
+
str_Ctl_Name
+
"
.select();</script>
"
);
}
37.确认对话框
///
<summary>
///
服务器端弹出confirm对话框
///
</summary>
///
<param name="str_Message">
提示信息,例子:"您是否确认删除!"
</param>
///
<param name="btn">
隐藏Botton按钮Id值,比如:btn_Flow
</param>
///
<param name="page">
Page类
</param>
public
void
Confirm(
string
str_Message,
string
btn,Page page)
{
page.RegisterStartupScript(
""
,
"
<script> if (confirm('
"
+
str_Message
+
"
')==true){document.forms(0).
"
+
btn
+
"
.click();}</script>
"
);
}
38.重载确认对话框,点击确定触发一个隐藏按钮事件,点击取消触发一个隐藏按钮事件
///
<summary>
///
服务器端弹出confirm对话框,询问用户准备转向那些操作,包括“确定”和“取消”时的操作
///
</summary>
///
<param name="str_Message">
提示信息,比如:"成功增加数据,单击\"确定\"按钮填写流程,单击\"取消\"修改数据"
< /param>
///
<param name="btn_Redirect_Flow">
"确定"按钮id值
</param>
///
<param name="btn_Redirect_Self">
"取消"按钮id值
</param>
///
<param name="page">
Page类
</param>
public
void
Confirm(
string
str_Message,
string
btn_Redirect_Flow,
string
btn_Redirect_Self,Page page)
{
page.RegisterStartupScript(
""
,
"
<script> if (confirm('
"
+
str_Message
+
"
')==true){document.forms(0).
"
+
btn_Redirect_Flow
+
"
.click();}else{document.forms(0).
"
+
btn_Redirect_Self
+
"
.click();}</script>
"
);
}
39.获得焦点
///
<summary>
///
使控件获得焦点
///
</summary>
///
<param name="str_Ctl_Name">
获得焦点控件Id值,比如:txt_Name
</param>
///
<param name="page">
Page类
</param>
public
void
GetFocus(
string
str_Ctl_Name,Page page)
{
page.RegisterStartupScript(
""
,
"
<script>document.forms(0).
"
+
str_Ctl_Name
+
"
.focus(); document.forms(0).
"
+
str_Ctl_Name
+
"
.select();</script>
"
);
}
40.子窗体返回主窗体
///
<summary>
///
名称:redirect
///
功能:子窗体返回主窗体
///
参数:url
///
返回值:空
///
</summary>
public
void
redirect(
string
url,Page page)
{
if
( Session[
"
IfDefault
"
]
!=
(
object
)
"
Default
"
)
{
page.RegisterStartupScript(
""
,
"
<script>window.top.document.location.href='
"
+
url
+
"
';</script>
"
);
}
}
41.判断是否为数字
///
<summary>
///
名称:IsNumberic
///
功能:判断输入的是否是数字
///
参数:string oText:源文本
///
返回值:bool true:是 false:否
///
</summary>
public
bool
IsNumberic(
string
oText)
{
try
{
int
var1
=
Convert.ToInt32 (oText);
return
true
;
}
catch
{
return
false
;
}
}
//获得字符串实际长度(包括中文字符)
//
获得字符串oString的实际长度
public
int
StringLength(
string
oString)
{
byte
[] strArray
=
System.Text .Encoding.Default .GetBytes (oString);
int
res
=
strArray.Length ;
return
res;
}
42.将回车转换为TAB
//
当在有keydown事件的控件上敲回车时,变为tab
public
void
Tab(System.Web .UI.WebControls .WebControl webcontrol)
{
webcontrol.Attributes .Add (
"
onkeydown
"
,
"
if(event.keyCode==13) event.keyCode=9
"
);
}
43.datagrid分页中如果删除时出现超出索引
public
void
jumppage(System.Web.UI.WebControls.DataGrid dg)
{
int
int_PageLess;
//
定义页面跳转的页数
//
如果当前页是最后一页
if
(dg.CurrentPageIndex
==
dg.PageCount
-
1
)
{
//
如果就只有一页
if
(dg.CurrentPageIndex
==
0
)
{
//
删除后页面停在当前页
dg.CurrentPageIndex
=
dg.PageCount
-
1
;
}
else
{
//
如果最后一页只有一条记录
if
((dg.Items.Count
%
dg.PageSize
==
1
)
||
dg.PageSize
==
1
)
{
//
把最后一页最后一条记录删除后,页面应跳转到前一页
int_PageLess
=
2
;
}
else
//
如果最后一页的记录数大于1,那么在最后一页删除记录后仍然停在当前页
{
int_PageLess
=
1
;
}
dg.CurrentPageIndex
=
dg.PageCount
-
int_PageLess;
}
}
}