Description:This error  generally occurs while trying to execute a Stored Procedure using Microsoft Application Blocks [Data Access Block]

Solution:
1. Set "Timeout=s" in your connection string, where s is seconds
2. Set these properties
Connection.ConnectionTimeout
The time (in seconds) to wait for a connection to open. The default value is determined by the specific type of connection that you are using Command.ConnectionTimeout

The time in seconds to wait for the command to execute.