HNHarikrishnan N Syncfusion Team August 25, 2015 10:49 AM UTC
Thank you for using Syncfusion products.
The SfDataGrid will load its data only when it is allocated a size. When loading grid in tab items, the size will be allocated only for the tab item that is in view and hence the grid inside that tab item alone will be loaded. When you click on the second tab item, size is allocated for the grid loaded inside it and that is why the data is loaded only when clicking the second tab item. This is the default behavior.