I am using the Message Label ( https://github.com/Esri/arcgis-pro-sdk/wiki/ProConcepts-Framework#message-label )in a number of my custom Add-Ins. If I set the "Show Help" property to true, the user will see the "Learn More" hyperlink. The problem is when the user clicks the hyperlink, they are taken to the ArcGIS Pro website. I can set the property (Hyperlink.Click="MessageLabel_Click") and in the code-behind, i can point the messageLabel_Click event to load my help file and that works but it still loads the Pro website. How do i prevent the loading of Pro's website when the user clicks the "Learn More" hyperlink?