System.Management.SelectQuery query = new System.Management.SelectQuery("Win32_MemoryArray");
            System.Management.ManagementObjectSearcher searcher = new System.Management.ManagementObjectSearcher(query);

            Int32 max = 0;
            Int32 final = 0;
            foreach (System.Management.ManagementObject ManageObject in searcher.Get())
            {
                max = Int32.Parse(ManageObject["EndingAddress"].ToString());
                Decimal gigs = Decimal.Divide(new System.Diagnostics.PerformanceCounter("Memory", "Available KBytes", "_Total").RawValue, 1000000);
                final = max - (int)gigs;
                ramProgressBar.Maximum = max / 100000;
            }

            ramProgressBar.Value = (int)new System.Diagnostics.PerformanceCounter("Memory", "% Committed Bytes In Use").RawValue / 100000;

			System.Management.SelectQuery query = new System.Management.SelectQuery("Win32_MemoryArray");
			System.Management.ManagementObjectSearcher searcher = new System.Management.ManagementObjectSearcher(query);
			System.Diagnostics.PerformanceCounter performanceCounter = new System.Diagnostics.PerformanceCounter("Memory", "Available KBytes", true);
			
			//To avoid unnecessary casting, make these all a double
			double max = 0;
			double final = 0;
			double percentUsed = 0;
			foreach (System.Management.ManagementObject ManageObject in searcher.Get())
			{
				max = Int32.Parse(ManageObject["EndingAddress"].ToString());
				Decimal gigs = Decimal.Divide(performanceCounter.RawValue, 1000000);

				//divide the RawValue by the max to get the percentage used
				//then multiply by 100 to convert it to a value between 0 and 100
				percentUsed = (performanceCounter.RawValue / max) * 100.0;
				final = max - Convert.ToDouble(gigs);
				ramProgressBar.Maximum = 100;
			}

			ramProgressBar.Value = (int)percentUsed;