c# - Using observablecollection with buttons -
i have observablecollection create buttons problem each of these buttons call same event handler. trying make each button has own unique id can distinguished 1 another. code used create button elements is
public class button { public bool isempty { get; set; } public int id {get; set;} public button(int button_number) { isempty = true; id = button_number; } } i added observablecollection in following code
buttoncollection = new observablecollection<cchipvm>(); ( int = 0 ; < inumchips ; ++i ) { buttoncollection.add( new button(i) ); } the xml button following
<datatemplate x:key="buttontemplate"> <button x:name="button" uid="{binding path=id}" click="button_click" borderbrush="black" borderthickness="1" margin="7" width="25" height="25" clickmode="press" opacity="0.9" focusable="false" ishittestvisible="true" allowdrop="true" istabstop="false"> <button.style> <style> <style.triggers> <datatrigger binding="{binding path=isempty}" value="false"> <setter property="button.background"> <setter.value> <lineargradientbrush endpoint="0.5,1" startpoint="0.5,0"> <gradientstop color="#ff5ed426" offset="0"/> <gradientstop color="white" offset="1"/> </lineargradientbrush> </setter.value> </setter> </datatrigger> <datatrigger binding="{binding path=isempty}" value="true"> <setter property="button.background"> <setter.value> <lineargradientbrush endpoint="0.5,1" startpoint="0.5,0"> <gradientstop color="#ff1766f0" offset="0"/> <gradientstop color="white" offset="1"/> </lineargradientbrush> </setter.value> </setter> </datatrigger> </style.triggers> </style> </button.style> </button> </datatemplate> when tries set uid method system crashes, recommendation how fix or other solution each button can have unique id
you can use button.tag property store id , in handler inspect value of tag
<button tag="{binding path=id}" click="button_click" borderbrush="black" borderthickness="1" margin="7" width="25" height="25" clickmode="press" opacity="0.9" focusable="false" ishittestvisible="true" allowdrop="true" istabstop="false"> update : button click handler
public void button_click(object sender,eventargs e) { var mybutton = (button)sender; int id = convert.toint32(mybutton.tag); } 
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