Dream, not what is, but what can be.

Azure Internet of Things (IoT)

Putting together an IoT concept app using Azure IoTHub, Service Bus, Event Hubs, Streaming Analytics, and Power BI using my MSDN credits. Good stuff. Next I will hook it up to a mobile app for an end to end demo.

Posted on Friday, April 22, 2016 6:40 AM


Azure Event Hub

Putting a ; at the end of an Azure Event Hub connection string causes an Invalid Token Error. Wow, frustrating.

Posted on Friday, April 22, 2016 6:39 AM


Clear IP addresses

To clear out cached IP addresses.

System.Diagnostics.Process.Start("ipconfig", "/renew");

// or to hide command window

System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
p.StartInfo.FileName = "ipconfig";
p.StartInfo.Arguments = "/renew";
p.Start();

Posted on Friday, April 08, 2016 8:51 AM


Get a registry value

Get a registry value, for instance the "version"

Version version = null;
using (Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(@"<path>"))
{
    if (key != null)
    {
        System.Object o = key.GetValue("version");
        if (o != null)
        {
            version = new Version(o as String);
        }
    }
}

Posted on Tuesday, December 08, 2015 2:05 PM


Infinity Symbol

PlatformKey typeDescription
PC windowsAlt+236Hold the ALT key and type 236 on the num-lock keypad.

Posted on Saturday, December 05, 2015 8:23 AM


Normalize range of values

Normalize range of values

double scaleMin = 0; //the normalized minimum desired
double scaleMax = this.ActualHeight; //the normalized maximum desired

double valueMax = data.Max();
double valueMin = data.Min();
double valueRange = valueMax - valueMin;
double scaleRange = scaleMax - scaleMin;

var normalized =
    data.Select(i =>
        ((scaleRange * (i - valueMin))
            / valueRange)
        + scaleMin).ToArray();

Posted on Wednesday, November 18, 2015 7:19 AM


TAB pressed on WinForm

To determine if the TAB key was pressed on a WinForm, over ride the ProcessCmdKey event.

I created a custom control of NumericUpDown and added a check when lost focus if IsTabPressed

public bool IsTabPressed { get; set; }

protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, Keys keyData)
{
    IsTabPressed = (keyData == Keys.Tab);
    return base.ProcessCmdKey(ref msg, keyData);
}

Posted on Wednesday, November 11, 2015 7:45 AM


Find computer from command line


net view | find /i "partial name"

Posted on Friday, October 23, 2015 7:16 AM


Dynamically get/set property

Dynamically get/set property

// GET
var x = this.Model.GetType().GetProperty("PropertyName").GetValue(this.Model, null);
// SET
this.Model.GetType().GetProperty("PropertyName").SetValue(this.Model, newValue);

Posted on Wednesday, October 21, 2015 9:08 AM


Eye Tracking Sensor

Creating an eye tracking app using a BlueGain EOG Biosignal Amplifier to wirelessly connect to a computer and using a Matlab script reading the EOG data. Integrating with .Net.

Posted on Friday, October 02, 2015 8:20 AM