ASP. NET Common collection code 4

17. digit formatting

The result of <% # container. dataitem ("price") %> is 500.0000. How to format it to 500.00 ?]

<%#Container.DataItem("price","{0:￥#,##0.00}")%>
　　
int i=123456;
string s=i.ToString("###,###.00");

18. Date formatting

[ASPX page: <% # databinder. eval (container. dataitem, "company_ureg_date") %>

Shown as: 19:44:28

I only want]

<% # Databinder. eval (container. dataitem, "company_ureg_date", "{0: yyyy-m-d}") %>

How should I change it?

[Format date]

It is usually an object.

(Datetime) objectfromdb). tostring ("yyyy-mm-dd ");

[Date verification expression]

A. The correct input format is as follows: [], [10:29:39], []

^ (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]) | ([2, 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. The following correct input format: [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]) $

[Case-sensitive conversion]

Httputility. htmlencode (string );

Httputility. htmldecode (string)

19. How to set global variables

In global. asax

Application_start () event

Add application [attribute name] = xxx;

Is your global variable

20. How do I connect to the connection generated by hyperlinkcolumn and click Connect to open a new window?

Hyperlinkcolumn has a property target, which can be set to "_ blank" (target = "_ blank ")

[Aspnetmenu] Click the menu item to bring up a new window

Add urltarget = "_ blank" to the menu item of your menudata. xml file"

For example:

<? XML version = "1.0" encoding = "gb2312"?>
<Menudata imagesbaseurl = "images/">
<Menugroup>
<Menuitem label = "internal reference information" url = "infomation. aspx">
<Menugroup id = "BBC">
<Menuitem label = "announcement information" url = "infomation. aspx" urltarget = "_ blank" lefticon = "file.gif"/>
<Menuitem label = "" url = "newinfo. aspx" lefticon = "file.gif"/>
......

Upgrade your aspnetmenu to version 1.2.

21. Delegate Discussion

Http://community.csdn.net/Expert/topic/2651/2651579.xml? Temp =. 7183191.

23. three template columns in the DataGrid contain textbox columns dg_shuliang (Quantity) dg_danjian (unit price) dg_jine (amount) in 5.6.7, respectively, it is required that the amount be calculated automatically when the quantity and unit price are entered: quantity * unit price = amount, and the input time limit must be numeric. how can I use a client script to implement this function?

[Si GUI 〗

<Asp: templatecolumn headertext = "quantity">
<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 = "unit price">
<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 = "amount">
<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>

Http://dev.csdn.net/develop/article/22/22951.shtm

22. Read the textbox value of the DataGrid Control.

foreach(DataGrid dgi in yourDataGrid.Items)
{
TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");
tb.Text....
}