Eval usage in ASP. NET

<% # BIND ("subject") %> // bind a field
<% # container. dataitemindex + 1%> // implement automatic number
<% # databinder. eval (container. dataitem, "[N]") %>
common methods (the best performance of these three methods)
<% # databinder. eval (container. dataitem, "columnname") %>
<% # databinder. eval (container. dataitem, "columnname", null) %>
<% # databinder. eval (container, "dataitem. columnname ", null) %>
other usage
<% # (dataro Wview) container. dataitem) ["columnname"] %>
<% # (datarowview) container. dataitem ). row ["columnname"] %>
<% # (datarowview) container. dataitem) ["adtitle"] %>
<% # (datarowview) container. dataitem) [N] %>
<% # (dbdatarecord) container. dataitem) [0] %>
<% # (custom type) container. dataitem )). attribute. tostring () %> // If the attribute is of the string type, you do not need tostring ().
databinder. eval usage example
<% # databinder. eval (Co Ntainer. dataitem, "integervalue", "{0: c}") %>
the format string parameter is optional. If the parameter is ignored, databinder. Eval returns the object type value.

// Display two decimal places
<% # Databinder. eval (container. dataitem, "unitprice", "$ {0: F2}") %>

// {0: g} indicates that true or false is displayed.
<Itemtemplate>
<Asp: image width = "12" Height = "12" border = "0" runat = "server"
Alternatetext = '<% # databinder. eval (container. dataitem, "discontinued", "{0: g}") %>'
Imageurl = '<% # databinder. eval (container. dataitem, "discontinued ","~ /Images/{0: g2.16.gif ") %> '/>
</Itemtemplate>

// Conversion Type
(String) databinder. eval (container, "dataitem. p_ship_time_sbm8"). substring (4, 4)
{0: d} date only displays year, month, and day
{0: yyyy-mm-dd} displays year, month, and day by format
{0: c} currency Style
<% # Container. dataitem ("price", "{0: ￥ #,## 0.00}") %>
<% # Databinder. eval (container. dataitem, "company_ureg_date", "{0: yyyy-m-d}") %>
Specifier Type format output (passed double 1.42) output (passed int-12400)
C currency {0: c} $1.42-$12,400
D decimal {0: d} system. formatexception-12400
E scientific {0: e} 1.420000e + 000-1.2420.e + 004
F fixed point {0: f} 1.42-12400.00
G General {0: g} 1.42-12400
N number with commas for thousands {0: n} 1.42-12,400
R round trippable {0: R} 1.42 system. formatexception
X hexadecimal {0: X4} system. formatexception cf90

{0: d} date only displays year, month, and day
{0: yyyy-mm-dd} displays year, month, and day by format

The style depends on the settings in Web. config.
{0: c} or {0: 00000,000.00} currency style standard British currency Style
<System. Web>
<Globalization requestencoding = "UTF-8" responseencoding = "UTF-8" Culture = "En-us" uiculture = "En-us"/>
</System. Web>
Displayed as listen 3,000.10

{0: c} or string. Format ("{0: c}", price); Chinese currency Style
<System. Web>
<Globalization requestencoding = "UTF-8" responseencoding = "UTF-8" Culture = "ZH-CN" uiculture = "ZH-CN"/>
</System. Web>
Shown as ￥3,000.10

{0: c} or string. Format ("{0: c}", price); American currency Style
<System. Web>
<Globalization requestencoding = "UTF-8" responseencoding = "UTF-8"/>
</System. Web>
Shown as $3,000.10

Conversion from: eval usage in ASP. NET