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、表格超链接列传递参数
<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
’;
"
);
}
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
DataFormatString="{0:yyyy-MM-dd}"
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
//
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>
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}")%>
18、日期格式化
<%# DataBinder.Eval(Container.DataItem,"Company_Ureg_Date")%>显示为:2004-8-11 19:44:28 只想要:2004-8-11
<%# DataBinder.Eval(Container.DataItem,"Company_Ureg_Date","{0:yyyy-M-d}")%>
【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;
就是你的全局变量
21、HyperLinkColumn生成的连接,点击打开新窗口?
HyperLinkColumn有个属性Target,将器值设置成"_blank"即可.(Target="_blank")
22、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。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")%>’
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>
23、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.smartNavigation
=
true
24、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
"
)
}
}
25、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();
26、ToString()
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%
27、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
);
28、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
;
}
}