Question

My application is a WPF C# database app that work with sql Server 2008 and Entity Framework.

if sql server Stopped or …, my application hangs but i want to Show a message to the user if this problem occurred.
Please help me how can i do it.

Answer 1

You can check if sql server service is running

http://support.microsoft.com/kb/912426/en-us

and then perform simple select in try-catch block to detect, that you have user rights to database.

try
{
var b = db.Table.FirstOrDefault();
}
catch(Exception e)
{
ShowMessageBox(e.Message);
}