OutOfMemoryException

[C# Programming]

Hi,
I am new to c# and getting this:

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
...........................
.........................

any thoughts?

and also what about this?:

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at System.String.ConcatArray(String[] values, Int32 totalLength)
at System.String.Concat(String[] values)

...........
............

thanks.