C# Source Code: Releasing a reference to a COM object in .NET
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C# Source Code
Releasing a reference to a COM object in .NET
By:
Andrew Baker
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Date:
Wednesday, June 02, 2004
Hits:
728
Category:
COM/Interop
Article:
For obvious reasons, it is recommended that you do not use enforced garbage collections to deterministically unload COM objects. Instead the following is a simple method which decrements the COM reference counter and unloads the object. Note, I would strongly recommend reading the following article on this complex subject: http://samgentile.com/blog/archive/2004/04/28/11476.aspx using System.Runtime.InteropServices; /// <summary> /// Routine to perform the deterministic unloading of a COM object. /// </summary> /// <param name="comObject">The COM object to release the reference of</param> static void ReleaseComObject(ref object comObject) { if ( comObject != null && Marshal.IsComObject(comObject) ) { // Release reference to COM object (reduce the pUnk count to zero) do { } while( Marshal.ReleaseComObject(comObject) > 0 ); comObject= null; } }
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