asp.net - Select Control Populated from JavaScript Returns Empty Value -


in asp.net applications, have server-side html select control.

<select id="companydropdown" runat="server" style="width:330px"> </select>

i have link on page runs javascript function populates control, , selects "current" item. can see working because list has items , correct 1 selected.

however, when page posts in response button click.

<asp:button runat="server" id="btnsavecompany" text="save"      onclick="btnsavecompany_click" />

companydropdown.value empty, , contains no items. suggestions on how can see selected value on postback?

(note: tried using asp.net dropdown control, fails postback validation when control has items added after page rendered.)

because items added list using javascript aren't part of viewstate, cannot retrieved server side. if trying selected value, put server-side hidden field on page , set value using javascript each time selection of drop-down changed:

jquery script:

$('#companydropdown').change(function() {     $('#inpselectvalue').val($(this).val()); });

hidden field markup:

<input runat="server" id="inpselectvalue" clientidmode="static" type="hidden" />

the value of hidden field carried server on post back. refer retrieve value of selected item. sure add clientidmode="static" drop down keep rendered id of controls set id assign in aspx page (i.e., companydropdown rather parentcontainer_companydropdown):

<select id="companydropdown" runat="server" style="width:330px"     clientidmode="static" />

alternatively, use ajax tell server adding each dynamically generated list item or changing selection. if needed maintain list of items in addition 1 selected.


Comments

Post a Comment

Popular posts from this blog

c# - SharpSVN - How to get the previous revision? -

i trying find efficient way previous revision of file text comparison using sharpsvn. using (svnclient c = new svnclient()) { c.authentication.defaultcredentials = new networkcredential( configurationmanager.appsettings.get("svnserviceusername") , configurationmanager.appsettings.get("svnservicepassword") , configurationmanager.appsettings.get("svnservicedomain") ); c.authentication.sslservertrusthandlers += new eventhandler<svnsslservertrusteventargs>(authentication_sslservertrusthandlers); collection<svnfileversioneventargs> fileversioncollection = new collection<svnfileversioneventargs>(); svnrevisionrange range = new svnrevisionrange(0, this.hooks.revision); svnfileversionsargs args = new svnfileversionsargs(); args.retrieveproperties = true; args.range = range; foreach (svnchangeitem item in log.changedpaths) { string path = this.repositorypath + it...
Read more

c++ - Is it possible to compile a VST on linux? -

for class project i'm attempting write vst plugin backed cuda. current cuda workflow on linux box, i'd prefer compile , link there. according wikipedia , should possible (i couldn't find steinberg documentation relevant linux) can't find makefile or instructions on how build if aren't using xcode or visual studio. i'm vst 3 sdk doesn't support linux. when try compile plugin under linux, error: ./base/source/fatomic.cpp:39:30: fatal error: libkern/osatomic.h: no such file or directory this issue caused following code in "vst3 sdk/base/source/fatomic.cpp" #if mac #include <libkern/osatomic.h> #if mac_os_x_version_min_required > mac_os_x_version_10_4 #define native_atomic_type (volatile int32_t*) #else #define native_atomic_type (int32_t*) #endif #elif windows #include <windows.h> #endif but hope compiling under linux work vst sdk 2.4. reading. jvstwrapper seems run on lin...
Read more

url - Querystring manipulation of email Address in PHP -

i using third party application (email2http) send me emailid, body , message. unable retrieve email id due name appended on , enclosed < , >. here querystring getting. test.php?from=ajay+reddy &subject=cx&body=somebody when print variable in php returns name , not email id. $from = $_get['from']; echo $from; //output ajay reddy please suggest me how can emailid also. i dont want use post method due testing , debugging. it's working fine. forgot use htmlentities() in debugging.
Read more