C# Signature:

[DllImport("kernel32.dll")]
static extern bool SetProcessWorkingSetSize(IntPtr hProcess, UIntPtr
   dwMinimumWorkingSetSize, UIntPtr dwMaximumWorkingSetSize);

VB.NET Signature:

     Private Declare Function SetProcessWorkingSetSize Lib "kernel32.dll" (ByVal hProcess As IntPtr, ByVal dwMinimumWorkingSetSize As Int32, ByVal dwMaximumWorkingSetSize As Int32) As Int32

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Might be better written using int instead of UInt as -1 is a valid value for dwMaximumWorkingSetSize and dwMinimumWorkingSetSize. See Sample Code.

Sample Code:

//sample is probably a bad idea, but it will "trim down" the memory footprint of a .Net App (or at least the value reflected in Task Manager).

C#

//sample is probably a bad idea, but it will "trim down" the memory footprint of a .Net App (or at lease the value reflected in Task Manager).

   public class MemoryManagement{
        [DllImport("kernel32.dll")]
        public static extern bool SetProcessWorkingSetSize( IntPtr proc, int min, int max );

        public void FlushMemory() {
            GC.Collect() ;
            GC.WaitForPendingFinalizers() ;
            if(Environment.OSVersion.Platform == PlatformID.Win32NT) {
                SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1) ;
            }
        }
   }

VB.NET

     Friend Sub ReleaseMemory()
      Try
           GC.Collect()
           GC.WaitForPendingFinalizers()
           If Environment.OSVersion.Platform = PlatformID.Win32NT Then
            SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1)
           End If
      Catch
      End Try
     End Sub    

Alternative Managed API:

Do you know one? Please contribute it!

Alternative Managed API:

Do you know one? Please contribute it!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).