Cannot read property 'open' of undefined ?

[Ukmandal]

CustomerListComponent.html:68 ERROR TypeError: Cannot read property 'open' of undefined
at CustomerListComponent.openConfirmationDelete (customer-list.component.ts?add6:43)
at Object.eval [as handleEvent] (CustomerListComponent.html:68)
at handleEvent (core.js?593e:13581)
at callWithDebugContext (core.js?593e:15090)
at Object.debugHandleEvent [as handleEvent] (core.js?593e:14677)
at dispatchEvent (core.js?593e:9990)
at eval (core.js?593e:10611)
at HTMLButtonElement.eval (platform-browser.js?384d:2628)
at ZoneDelegate.invokeTask (zone.js?6524:425)
at Object.onInvokeTask (core.js?593e:4744)
at ZoneDelegate.invokeTask (zone.js?6524:424)
at Zone.runTask (zone.js?6524:192)
at ZoneTask.invokeTask [as invoke] (zone.js?6524:499)
at invokeTask (zone.js?6524:1540)
at HTMLButtonElement.globalZoneAwareCallback (zone.js?6524:1566)

I am not getting this error ? please help.

[wartab]

Error message seems self-explanatory. Why don't you give us the obvious tools to try and help you, such as... the code?

[Ukmandal]

Thankx fro suppot but i got the solution.