The C++ code runs under the Arduino IDE (1.8.9), but execution appears stops on the line of code 

Udp.begin(localPort);

when the code is run under Visual Studio 2017 with the VisualMicro add on.  I have tried reloading Visual Studio and VisualMicro with no change.  Any ideas?

#include <SPI.h>
#include <Ethernet.h>

byte mac[] = { 0x90, 0xA2, 0xDA, 0x10, 0xCA, 0x26 };
IPAddress lclIp(192, 168, 2, 173);
unsigned int localPort = 8889;

IPAddress rmtIp(192, 168, 2, 177);
unsigned int remotePort = 8888;

char message[] = "Yippy!";
EthernetUDP Udp;//new instance of UDP

void setup() {
	Serial.begin(9600);  // start the serial port for output and Ethernet/UDP:
	Serial.println("running ArduinoTestUPDSend");
	Ethernet.begin(mac, lclIp);
	Serial.println("running ArduinoTestUPDSend1");
	Udp.begin(localPort);
	Serial.print("My IP address: ");//make sure the IP address is correct
	Serial.println(Ethernet.localIP());
}

// the loop function runs over and over again forever
void loop() {
	for (int i = 0; i < sizeof(message); i++)//print message to make sure its correct
	{
		Serial.print(message[i]);
	}
	Serial.println("\r");
	Udp.beginPacket(rmtIp, remotePort);//start packet
	Udp.write(message);//sending message
	Udp.endPacket();//Close packet
	delay(100);
} 

See attached for the ouput from Micro Build.  I tried attaching the output from Micro build.  That file just produces a blank page when I click on it from my post.  I will reattach it again.

When the program is compiled by visual studio the line of code:

Udp.begin(localPort);

Stops execution, i.e.  Nothing happens after that.

When the same code is compiled and executed by the Arduino IDE, it works fine and sends the message across the ethernet connection to the receiving Arduino.

I am guessing it something to do with the way Visual Studio/MicroVisual are incorporating the ethernet/SPI libraries.

I deleted:

C:/Users/miker/AppData/Local/arduino15/packages/arduino/

and 

changed to "release" mode from "debug"

Now the port opens, but there is no serial output at all.

I am going to reinstall both Visual Studio and Visual Micro again, in an attempt to start clean.  Any suggestions on ensuring a clean reinstallation?

I ran this program on my lap top and after updating the Arduino files it ran.

I have updated both VS2017 and VisualMicro on the desktop computer (several times) to no avail.  There is no serial output at all.  Changing the baud rate to 9600 did not help.  If I run it with debug on the serial connection works, since the first line of text is printed to the serial port, but the program hangs on the Upd.begin statement.  I have sent you and email with the build info from both machines.  Maybe you can figure out what is different between the two machines.

// Visual Micro is in vMicro>General>Tutorial Mode
//
/*
    Name:       Arduino_Dash2.1VS.ino
    Created:	9/3/2019 10:29:00 AM
    Author:     CORE2QUAD\Mike Blankenship1
*/
//Pins 10, 50, 51 and 52 are used by the Ethernet board
#include <SPI.h>
#include <Ethernet.h>
byte mac[] = { 0x90, 0xA2, 0xDA, 0x10, 0xCA, 0x26 };
IPAddress lclIp(192, 168, 2, 172);
unsigned int localPort = 8889;
IPAddress rmtIp(192, 168, 2, 177);
unsigned int remotePort = 8888;
char message[] = "t";
EthernetUDP Udp;//new instance of UDP
void setup() {
	Serial.begin(9600);  // start the serial port for output and Ethernet/UDP:
	Serial.println("running Arduino_Dash2.1VS");
	Ethernet.begin(mac, lclIp);
	Udp.begin(localPort);
	Serial.print("My IP address: ");//make sure the IP address is correct
	Serial.println(Ethernet.localIP());
}
// the loop function runs over and over again forever
void loop() {
	if (message[0] == 'r')
	{
		message[0] = 'R';
	}
	else
	{
		message[0] = 'r';
	}
	Serial.print(message[0]);
	//for (int i = 0; i < sizeof(message); i++)//print message to make sure its correct
	//{
	//  Serial.print(message[i]);
	//}
	Serial.println("\r");
	Udp.beginPacket(rmtIp, remotePort);//start packet
	Udp.write(message);//sending message
	Udp.endPacket();//Close packet
	delay(1000);
}

 

It is fixed!  Your were right, I had an older version of the Arduino IDE still installed.  Visual Micro was still pointing at the older version.
   I changed the location in Visual Studio by going to:

vMicro, General, configure Arduino IDE location(s)

and changed:


C:\Program Files\Arduino\arduino-1.8.5

to:

C:\Program Files (x86)\Arduino

  I assumed that loading new versions of all the software would take care of that(wrong).  Comparing the micro build dumps, that you made me aware of, was key in figuring out what had to be done.

  Thanks for your help and hope this helps others as well.  Visual Studio and Visual Micro are nice tools for programming the Arduino.