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:
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
}
}
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);
33.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"
>
<
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
>
</
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
"
);
}