不能将“Employee”上的“number”属性设置为“System”。十进制的值

The 'number' property on 'Employee' could not be set to a 'System.Decimal' value. You must set this property to a non-null value of type 'System.Double'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. The 'number' property on 'Employee' could not b