By reverting the condition of if portList. The naming of the variables could need some imporvements too, e. Storing the result of matchingEntities["DeviceID"]. ToString into a variable will speed up things. I developed an iteration using LINQ instead of the foreach loop while also implementing the improvements Heslacher suggested, the code now looks like this:.
Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 6 years, 1 month ago. Active 6 years, 1 month ago. Viewed 10k times. SamplerWithCancel is like a for loop with exception control, a time between interations and amount of iterations to be made.
It expects a true or false value to determine whether a desired condition is met. Failing to return a true value in the specified iterations throws an exception. Thanks Thomas for sharing us this informative article!! I am looking forward to use WMI and hope it will work great for me. I am not a coder chick but I think trying different things is a way of life.
Will give it a shot at it since now I know little bit about the know-how of this WMI. Thanks for the share Thomas. Hi Rashmi This tool is a great way to get started creating small useful scripts. You should give it a try for sure. I have started coding after I joined blogging and love to experiment different options. Your tutorial was great and will use WMI code creator to try coding. As a new reader of your blog I am loving each and every moment spent on it over past 2 days.
One of my favourite blogs now. Not everyone is good at coding. Others are even too afraid to try it. The information and explanation you posted is really helpful. It gives hope to those who are aspiring to learn. Thanks for the share! Nice post. I have never tried the coding thing, but after reading your post I might just give it a shot. After reading the information and instructions you have provided here, I realized that WMI scripting is not that easy after all.
I also believed that this will be of great help for other who has confusion about WMI. Thanks for sharing this post then. Thanks for sharing ….. I stripped out everything except the PortArrived event as it's quite fugly otherwise. I am interfacing with a USB-to-serial port that can be inserted or removed at any time.
However, this event doesn't reveal which device e. USB, serial port, etc caused the event. Is there a way to only receive notifications when serial ports are inserted or removed? The MonitorDeviceChanges method actually sees all device changes like Device Manager , but checking the serial ports allows us to only raise an event when those have changed.
To use the code, simply subscribe to the PortsChanged event, e. SerialPorts ;. Go find out what happened to SerialPort. The following will return device details - in the code below it shows the device name. Also see code to access other PNP properties that could be used to filtered or monitored for change:.
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