topic the detail message is Value cannot be null when impletement ArcGIS silverlight API in ArcGIS API for Silverlight Questions https://community.esri.com/t5/arcgis-api-for-silverlight-questions/the-detail-message-is-value-cannot-be-null-when/m-p/184224#M4561 <HTML><HEAD></HEAD><BODY><P>we are doing a silverlight project and ArcGIS is part of it. when I tried to intergrid my silverlight project into our whole project ,which is build on Devpress and Caliburn.Micro. I got the error mesasge :</P><P><IMG class="image-1 jive-image" src="https://community.esri.com/legacyfs/online/91524_pastedImage_0.png" style="max-height: 900px; max-width: 1200px;" /></P><P>anyone has clue about how to solve the problem?</P></BODY></HTML> Wed, 29 Apr 2015 15:24:49 GMT LuChen 2015-04-29T15:24:49Z the detail message is Value cannot be null when impletement ArcGIS silverlight API https://community.esri.com/t5/arcgis-api-for-silverlight-questions/the-detail-message-is-value-cannot-be-null-when/m-p/184224#M4561 <HTML><HEAD></HEAD><BODY><P>we are doing a silverlight project and ArcGIS is part of it. when I tried to intergrid my silverlight project into our whole project ,which is build on Devpress and Caliburn.Micro. I got the error mesasge :</P><P><IMG class="image-1 jive-image" src="https://community.esri.com/legacyfs/online/91524_pastedImage_0.png" style="max-height: 900px; max-width: 1200px;" /></P><P>anyone has clue about how to solve the problem?</P></BODY></HTML> Wed, 29 Apr 2015 15:24:49 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/the-detail-message-is-value-cannot-be-null-when/m-p/184224#M4561 LuChen 2015-04-29T15:24:49Z Re: the detail message is Value cannot be null when impletement ArcGIS silverlight API https://community.esri.com/t5/arcgis-api-for-silverlight-questions/the-detail-message-is-value-cannot-be-null-when/m-p/184225#M4562 <HTML><HEAD></HEAD><BODY><P>Problem fixed:</P><P>Solution. I was setting the extent at the runtime, which caused the above problem. So I set the extent in XAML file to let it run in the design time. the problem is gone.</P></BODY></HTML> Wed, 29 Apr 2015 17:21:13 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/the-detail-message-is-value-cannot-be-null-when/m-p/184225#M4562 LuChen 2015-04-29T17:21:13Z