Thirteen common codes in ASP. NET programs [4]

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 the 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])|([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. Read the textbox value of the DataGrid Control

foreach(DataGrid dgi in yourDataGrid.Items)
{
　TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");
　tb.Text....
}
　　23. there are three template columns in the DataGrid that contain textbox: dg_shuliang (Quantity) dg_danjian (unit price) dg_jine (amount) in the 5.6.7 column respectively. The amount must be calculated automatically when the number and unit price are entered.: Quantity * unit price = The amount also requires that the input time limit be set to numeric. How can I use client scripts 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>