Re: why my graph error??? - C# Discussion Boards

Where are you stuck?
And: why do you want to take screen shots? What about saving the charts as images to disk?

You do know that it's dynamic data don't you? So, change the data and then capture the screenshot. There's even an article on here that shows thow to capture the screen[^].

anyone can help me,.,
i try to make a graph in c# like this video in youtube :

http://www.youtube.com/watch?v=Tay4t1Wo-As[^]

i have been doing all of procedure like this tutorial..
in tutorial
when program running..no error happend..
when i try run my program that i made, error happend

error program is = "axMathworks_Strip1.AddXY(0, a, Convert.ToDouble(textBox1.Text));"

this is a full program
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace nyobaan_library1
{
public partial class Form1 : Form
{
Double a,b;

public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
timer1.Start();
button1.Enabled = false;
}

private void timer1_Tick(object sender, EventArgs e)
{

a++;
axMathworks_Strip1.AddXY(0, a, Convert.ToDouble(textBox1.Text));
}
}
}

iam using library MWStrip.ocx active X

computer say :
"nput string was not in a correct format."

any one can help me????

What value is in your TextBox? You might want to try something like this:

C#

double coordinate;
if (double.TryParse(txtBox1.Text, out coordinate)
{
  axMathworks_Strip1.AddXY(0, a, coordinate);
}

thanks so much ....^_^

i am still not understand..
why this coding error
"axMathworks_Strip1.AddXY(0, a, Convert.ToDouble(textBox1.Text));"
in video tutorial, error is not happening???
Convert.ToDouble(textBox1.Text)); error in this section....

and your coding
double coordinate;
if (double.TryParse(txtBox1.Text, out coordinate)
{
axMathworks_Strip1.AddXY(0, a, coordinate);
}
i add "a++" when i run, the program successfully executed....can u give me short explanation...sorry for my english..

The reason my version works and yours didn't is because of what TryParse does. Basically, if it cannot parse the value into a double then it will not execute the Add section. Using Convert.ToDouble will throw an exception if it cannot convert the value.

thanks for the enlightenment, it was so helping me ....

I tried to connect the data adc atmega 16 microcontroller application to C # that has been created with the help of the code that you help ..
private void timer1_Tick (object sender, EventArgs e)
         {
             double coordinate;
             b ++;
             if (double.TryParse (txtDataTerima.Text, out coordinate))
             {
                 axMathworks_Strip1.AddXY (0, b, coordinate);
             }
         }

This code can only display data manually ..
I try to make it automatically with the help of serial ports
but in a textbox that I created
the data that I received with the help of data reception code:
string a;
private void serialPort_DataReceived (object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
         {
             txtDataTerima.BeginInvoke (new myDelegate (updateTextBox));
         }
         public delegate void myDelegate ();
         public void updateTextBox ()
         {
             a = serialPort.ReadExisting ();


             txtDataTerima.AppendText (a);
             txtDataTerima.ScrollToCaret ();
         }
textboxt data displayed through serial communication, data updates down when there are changes in the value of adc input of the microcontroller
I try again to change the code
acceptance of data updates

full program
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace GrafikADC
{
public partial class Form1 : Form
{
double b;

double apa;
string a;
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
//—menset event handler untuk DataReceived event—
// serialPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler();
//—menampilkan nama serialport yang tersedia pada
// komputer—
string[] portNames = System.IO.Ports.SerialPort.GetPortNames();
for (int i = 0; i <= portNames.Length - 1; i++)
{
cbbCOMPorts.Items.Add(portNames[i]);
}
btnDisconnect.Enabled = false;
}

private void btnConnect_Click(object sender, EventArgs e)
{
//—menutup akses serialport apabila akses serialport terbuka—
if (serialPort.IsOpen)
{
serialPort.Close();
}
try
{
//—mengatur beberapa parameter untuk koneksi serial
// port—
serialPort.PortName = cbbCOMPorts.Text;
serialPort.BaudRate = 9600;
serialPort.Parity = System.IO.Ports.Parity.None;
serialPort.DataBits = 8;
serialPort.StopBits = System.IO.Ports.StopBits.One;
//—buka serial port—
serialPort.Open();
//—menampilkan status dari serial port dan
// enable/disable -kan tombol—
lblMessage.Text = cbbCOMPorts.Text + " connected.";
btnConnect.Enabled = false;
btnDisconnect.Enabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}

private void btnDisconnect_Click(object sender, EventArgs e)
{
try
{
//—tutup serial port—
serialPort.Close();
//—menampilkan status dari serial port dan
// enable/disable -kan tombol—
lblMessage.Text = serialPort.PortName + " disconnected.";
btnConnect.Enabled = true;
btnDisconnect.Enabled = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}

private void serialPort_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
txtDataTerima.BeginInvoke(new myDelegate(updateTextBox));
}
public delegate void myDelegate();
public void updateTextBox()
{
a = serialPort.ReadExisting();

txtDataTerima.AppendText(a);
txtDataTerima.ScrollToCaret();
txtDataTerima.Clear();

}

private void button3_Click(object sender, EventArgs e)
{
timer1.Start();
button3.Enabled = false;
}

private void timer1_Tick(object sender, EventArgs e)
{
double coordinate;
b++;
if (double.TryParse(txtDataTerima.Text, out coordinate))
{
axMathworks_Strip1.AddXY(0, b, coordinate);
}
}

}
}

This is a program I created delivery microcontroller :
#include <mega16.h>

#include <delay.h>

int a,b;
char riki[33];

// Alphanumeric LCD functions
#include <alcd.h>

// Standard Input/Output functions
#include <stdio.h>

#define ADC_VREF_TYPE 0x00

// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | (ADC_VREF_TYPE & 0xff);
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
// Start the AD conversion
ADCSRA|=0x40;
// Wait for the AD conversion to complete
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
return ADCW;
}
while (1)
{
// Place your code here
a = read_adc(2);
lcd_gotoxy(0,0);
sprintf(riki, "adc1=%d",a);
lcd_puts(riki);
delay_ms(50);
lcd_clear();

printf("%d\n", a);delay_ms(100);
}
}

I'm assuming it be due to the textbox value. Some countries use a dot as decimal seperator, others use a comma. In the background of the code this is not so. (always dot). To make sure that your textbox value parses to a double correctly look into the double.TryParse function.

V.

(MQOTD rules and previous solutions)

thanks for the explanation..
but iam still not understand.... Frown | :(

in that case you better start by picking a C# book and start reading from the start. This is very basic stuff.

A textbox gives the user's input as a piece of text, a string. a double is a certain type of number. Your computer is a machine and it only know 0 and 1. In this case the function expects a double, which is represented as a different series of 0 and 1's than a string, hence it doesn't understand the input. To make the input change from text to double you need to "parse" it. (parsing is like converting, you change the text value 1.123 into a double number 1.123 which is represented differently), but the "parsing" function makes some "assumptions" on the text it is given. (decimal operator is a . or , eg).

int, bool, double, float, string, char, ... they're all represented differently in the machine.

hope this clarifies things, but take the first sentence as advice, please.

V.

(MQOTD rules and previous solutions)

thank you for your valuable input

How do I select, drag and align the controls like Visual Studio at the running time ?

You should look into how Drag and Drop works. You would have a "canvas" of some sort to lay out your controls. This would be the drop target. Your controls would be the drag source.

You also posted the same question in QA C#. Please do not cross-post.

« I had therefore to remove knowledge, in order to make room for belief » Immanuel Kant

I want to develop the application which send million of messages using SMPP (like N number of message per second) with maximum scalability (Like some monitoring system for queue and count of messages getting send) with queue-bsed messaging, with minimum of resources usage at best performance.

Thanks in advance.
Mack

Mack Macwan

modified 28-Sep-18 14:04pm.

Nothing but buzzwords. Can you translate what you need into normal English?

There are only 10 types of people in the world, those who understand binary and those who don't.

This is best accomplished by syndicating dot-com portals and embracing real-time platforms in order to deploy turn-key e-commerce solutions. Assuming iterated e-business convergence, morphing enterprise solutions to generate clicks-and-mortar e-services will likely result in envisioneer B2C experiences. I recommend you innovate WAP Enabled e-markets in order to synthesize end-to-end content. Relevant B2C web-readiness models connected to disintermediate global infomediaries will allow you to exploit geo-processing services.

Further, if you mesh real-time monitoring niches and empower distributed partnerships, you will be in a position to seize B2C solutions. Growing out-of-the-box L-markets and enhanced scalable supply-chains are another way to reinvent value-added channels. I recommend streamlining asset tracking bandwidth and strategizing dynamic functionalities so that you can extend proactive mindshare. In my experience, transitioning next-generation infrastructures and maximizing integrated Related Interoperability are valuable endeavours.

IMHO, it's important to seek Bird-Dog visionary convergence and drive best-of-breed architectures to leverage frictionless methodologies. I also recommend you utilize killer channels, synergize e-business programs and reinvent impactful experiences. Scaling mobile programs and vision-oriented, well-modulated superstructures will enable an integrated heuristic application.

Hope you find this information helpful.

/ravi

My new year resolution: 2048 x 1536
Home | Articles | My .NET bits | Freeware
ravib(at)ravib(dot)com

Great! I'll order 500000 copies of that!
You coped with translating Willem Elsschot's "Lijmen" to the present era. Welcome, Mr. Boormans 2.0!

Can I get some Creamy Romano dressing for that Buzzword Salad?

A guide to posting questions on CodeProject

Click this: Asking questions is a skill.
Seriously, do it.

Dave Kreskowiak

Dave Kreskowiak wrote:
Can I get some Creamy Romano dressing for that Buzzword Salad?

Of course you can! Help yourself[^]! Big Grin | :-D

/ravi

My new year resolution: 2048 x 1536
Home | Articles | My .NET bits | Freeware
ravib(at)ravib(dot)com

Awsome! I have a few emails I need to send now. Big Grin | :-D

A guide to posting questions on CodeProject

Click this: Asking questions is a skill.
Seriously, do it.

Dave Kreskowiak

Hii thanks for reply but i have already developed service who process this thing but i want to create multiple instance of the service to load balance the queue of messages but its takes too much memory size and dbo operation which slow down my server speed and work and affects other services and site some time it shutdown whole server if queue is high i mean in billions so what will be the best way to accomplish this things.

Thanks very much
Mack Macwan

Thar really depends on what you're using for your queuing, but you really should look at distributing the queue across multiple redundant balanced nodes. You might want to consider Azure or Service Bus Queues. This[^] should get you started.

Hay thanks again may be this what i am looking for but can you share me some code sample please thanks in advance