ASP.NET程序中常用代码汇总(一)
document.title="ASP.NET程序中常用代码汇总(一) - "+document.title
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
"
,
"
returnconfirm(’确认?’)
"
);
button.attributes.add(
"
onclick
"
,
"
if(confirm(’areyousure
?’)){returntrue;}else{returnfalse;}
"
)
3.删除表格选定记录
int
intEmpID
=
(
int
)MyDataGrid.DataKeys[e.Item.ItemIndex];
string
deleteCmd
=
"
DELETEfromEmployeewhereemp_id=
"
+
intEmpID.ToString()
4.删除表格记录警告
private
void
DataGrid_ItemCreated(Objectsender,DataGridItemEventArgse)
{
switch
(e.Item.ItemType)
{
case
ListItemType.Item:
case
ListItemType.AlternatingItem:
case
ListItemType.EditItem:
TableCellmyTableCell;
myTableCell
=
e.Item.Cells[
14
];
LinkButtonmyDeleteButton;
myDeleteButton
=
(LinkButton)myTableCell.Controls[
0
];
myDeleteButton.Attributes.Add(
"
onclick
"
,
"
returnconfirm(’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.DataGridItemEventArgse)
{
//
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:HyperLinkColumnTarget="_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=’’;
"
);
}
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
//
inglobal.asax
protected
void
Application_Error(Objectsender,EventArgse)
{
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




































































8.关于日期格式















