There are no particular timings for Garbage Collector to get activated. Garbage Collection happens when one of the accompanying conditions is valid:

• The system has low physical memory. This is recognized by either the low memory warning from the operating system or low memory demonstrated by the host. At the point when an ALLOCATION of virtual memory is requested, the virtual memory manager NEEDS to locate a single free block that is enormous enough to fulfill that portion demand. Regardless of whether you have 2 GB of free space, the portion that requires 2 GB will be ineffective EXCEPT if the majority of that free space is in a single address block.
• The memory that is utilized by allocated objects on the managed heap exceeds an acceptable LIMIT. This limit is continuously balanced as the process runs.
• The GC.Collect method is called. In practically all cases, you don't need to CALL this technique, in light of the fact that the Garbage Collector runs continuously. This technique is principally utilized for extraordinary circumstances and testing.