?1 ???????? public ? static ? string ?GetControlValueFromRequest( string ?controlId)
?2 ???????? {
?3 ???????????? if ?(controlId? == ? null )
?4 ???????????????? throw ? new ?ArgumentNullException( " controlId " );
?5 ???????????? string ?requestValue? = ? null ;
?6 ????????????HttpRequest?req? = ?HttpContext.Current.Request;
?7 ???????????? string ?eventTarget? = ?req.Form[ " __EVENTTARGET " ]? ?? ? string .Empty;
?8 ???????????? if ?(eventTarget.Equals(controlId,?StringComparison.InvariantCultureIgnoreCase))
?9 ???????????? {
10 ????????????????requestValue? = ?req.Form[ " __EVENTARGUMENT " ];
11 ????????????}
12 ???????????? if ?( string .IsNullOrEmpty(requestValue))
13 ???????????? {
14 ???????????????? foreach ?( string ?id? in ?req.Form.AllKeys)
15 ???????????????? {
16 ???????????????????? if ?(controlId.Equals(GetFriendlyControlId(id),?StringComparison.InvariantCultureIgnoreCase))
17 ???????????????????? {
18 ????????????????????????requestValue? = ?req[id];
19 ???????????????????????? break ;
20 ????????????????????}
21 ????????????????}
22 ????????????}
23 ???????????? return ?requestValue;
24 ????????}
25
26 ???????? public ? static ? string ?GetFriendlyControlId( string ?renderedControlId)
27 ???????? {
28 ???????????? int ?indexOfSeparator? = ?renderedControlId.LastIndexOf(GetPageIdSeparator());
29 ???????????? if ?(indexOfSeparator? >= ? 0 )
30 ???????????? {
31 ????????????????renderedControlId? = ?renderedControlId.Substring(indexOfSeparator? + ? 1 );
32 ????????????}
33 ???????????? return ?renderedControlId;
34 ????????}
35
36 ???????? private ? static ? string ?GetPageIdSeparator()
37 ???????? {
38 ????????????Page?page? = ?HttpContext.Current.CurrentHandler? as ?Page;
39 ???????????? return ?page? == ? null ? ? ? " $ " ?:?page.IdSeparator.ToString();
40 ????????}
41