topic How can i get IApplication object. in ArcObjects SDK Questions https://community.esri.com/t5/arcobjects-sdk-questions/how-can-i-get-iapplication-object/m-p/540760#M14639 <HTML><HEAD></HEAD><BODY><SPAN>hello,everyone:</SPAN><BR /><SPAN>How can i get IApplication object,i use c# </SPAN><BR /><SPAN>my class extends the ESRI.ArcGIS.ADF.BaseClasses.BaseCommand.</SPAN><BR /><SPAN> i use the way below in the OnCreate(object hook) method;</SPAN><BR /><SPAN> when i use:</SPAN><BR /><SPAN> IApplication pApplication = hook&nbsp; as IApplication;</SPAN><BR /><SPAN> the pApplication will be null.</SPAN><BR /><SPAN>and when i use:</SPAN><BR /><SPAN> IApplication pApplication = (IApplication)hook;</SPAN><BR /><SPAN> will throw exception, the hook object cannot convert to IApplication;</SPAN><BR /><SPAN> </SPAN><BR /><SPAN> How can i get IApplication object,someone who can help me,very thank you.</SPAN></BODY></HTML> Thu, 29 May 2014 05:06:45 GMT Danieldai 2014-05-29T05:06:45Z How can i get IApplication object. https://community.esri.com/t5/arcobjects-sdk-questions/how-can-i-get-iapplication-object/m-p/540760#M14639 <HTML><HEAD></HEAD><BODY><SPAN>hello,everyone:</SPAN><BR /><SPAN>How can i get IApplication object,i use c# </SPAN><BR /><SPAN>my class extends the ESRI.ArcGIS.ADF.BaseClasses.BaseCommand.</SPAN><BR /><SPAN> i use the way below in the OnCreate(object hook) method;</SPAN><BR /><SPAN> when i use:</SPAN><BR /><SPAN> IApplication pApplication = hook&nbsp; as IApplication;</SPAN><BR /><SPAN> the pApplication will be null.</SPAN><BR /><SPAN>and when i use:</SPAN><BR /><SPAN> IApplication pApplication = (IApplication)hook;</SPAN><BR /><SPAN> will throw exception, the hook object cannot convert to IApplication;</SPAN><BR /><SPAN> </SPAN><BR /><SPAN> How can i get IApplication object,someone who can help me,very thank you.</SPAN></BODY></HTML> Thu, 29 May 2014 05:06:45 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-can-i-get-iapplication-object/m-p/540760#M14639 Danieldai 2014-05-29T05:06:45Z Re: How can i get IApplication object. https://community.esri.com/t5/arcobjects-sdk-questions/how-can-i-get-iapplication-object/m-p/540761#M14640 <HTML><HEAD></HEAD><BODY><SPAN>The hook will be in reference to what or who is hosting the command. It could be IApplication for desktop applications or IHookHelper for Engine toolbar controls. </SPAN><BR /><BR /><SPAN>- Thomas</SPAN></BODY></HTML> Tue, 03 Jun 2014 18:47:30 GMT https://community.esri.com/t5/arcobjects-sdk-questions/how-can-i-get-iapplication-object/m-p/540761#M14640 ThomasEmge 2014-06-03T18:47:30Z