c# - How do update an item in an ObservableCollection? -


i have , observablecollection reason code not work.

 private void updatechildreninclass()     {         var item = childreninclass.firstordefault(i => i.name == currentchild.name);         if (item != null)         {             item = currentchild;          }     }

item displays currentchild properties if in chidreninclass item properties have not been updated.

the problem item pointing object in observablecollection wanted update, set item point object(currentchild)


-

Popular posts from this blog

java - Cannot send AES encrypted messages of over 47 characters -

ello mates! creating aes encrypted chat program have ran issue; whenever message on 47 characters, displays "javax.crypto.illegalblocksizeexception: input length must multiple of 16 when decrypting padded cipher". understand error message can't seem figure out how fix it. here full code: chatclient.java package chat.application; import java.awt.event.actionevent; import java.awt.event.actionlistener; import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstreamreader; import java.io.printwriter; import java.net.socket; import javax.swing.jframe; import javax.swing.joptionpane; import javax.swing.jscrollpane; import javax.swing.jtextarea; import javax.swing.jtextfield; import javax.swing.text.*; import java.security.*; import java.util.logging.level; import java.util.logging.logger; import javax.crypto.*; import javax.crypto.spec.secretkeyspec; import sun.misc.*; import java.net.inetaddress; /* * known bugs: * message size limited 47...
Read more

PowerShell script ffmpeg -

being windows systems admin am, i'm getting around learning powershell. being said, have no idea i'm doing (surprise, surprise). i thought learning experience me play around powershell @ home, far away production environment. recently, i've begun using ffmpeg convert of .mkv files .mp4 have better playback support playstation 3 via plex, , thought learning experience. the command i've been running follows: ffmpeg -i oldvideoname.mkv -vcodec copy -acodec ac3 oldvideoname.mp4 what want have powershell script run once, scanning folder , sub-folders .mkv files (get-childitem ".*.mkv"), transcode them .mp4 via above command, , place them in same location .mkv same naming scheme. example of running script d:\videos target directory: d:\videos\home_dvr\movies\video1.mkv --> d:\videos\home_dvr\video1.mp4 d:\videos\home_dvr\tv\video2.mkv --> d:\videos\home_dvr\tv\video2.mp4 as can guess, can't figure out life of me. here's latest attempt...
Read more

objective c - Pick image and crop image became low quality iOS -

i can pick image gallery , crop image becomes low quality. cgrect value= avmakerectwithaspectratioinsiderect(imageview.image.size, imageview.frame); uigraphicsbeginimagecontext(imageview.image.size); [imageview.image drawinrect:cgrectmake(0,0, value.size.width, value.size.height)]; uiimage *img= uigraphicsgetimagefromcurrentimagecontext(); uigraphicsendimagecontext(); please 1 me figure out issue. you need create context uigraphicsbeginimagecontextwithoptions, , pass in scale of 0. call uigraphicsbeginimagecontext not allow retina images.
Read more