Develop Reference

How to make two forms receive information from the serial port that receives information from Arduino?

I am developing a graphical interface that reads variables from different sensors that arrive through the serial port, so far I have managed to read all the variables with a single form but now I want to have two forms.
The first form asks the user to choose the COM and confirms whether the connection was successful or not. Once the connection is successful, the second form is opened where the variables from the sensors will be shown in "labels", the readings sent from Arduino are read by the serial port and stored in an array:
data[0], data[1], data[2] etc...
This is the first form where Serialport1 is found and the data arrives through the serialPort1_DataReceived event:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
using System.Media;
namespace AUTOCLAVES_GUI
{
public partial class GUI_AUTOCLAVES_GENERADOR_DE_VAPOR : Form
{
/*VARIABLES GLOBALES*/
string puerto_seleccionado;
public GUI_AUTOCLAVES_GENERADOR_DE_VAPOR()
{
InitializeComponent();
string[] puertos = SerialPort.GetPortNames();
foreach (string mostrar in puertos)
{
comboBox1.Items.Add(mostrar);
}
}
private void Salir_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void Minimizar_Click(object sender, EventArgs e)
{
WindowState = FormWindowState.Minimized;
}
private void Maximizar_Click(object sender, EventArgs e)
{
WindowState = FormWindowState.Maximized;
Maximizar.Visible = false;
Restaurar.Visible = true;
}
private void Restaurar_Click(object sender, EventArgs e)
{
WindowState = FormWindowState.Normal;
Restaurar.Visible = false;
Maximizar.Visible = true;
}
private void MenuSideBar_Click(object sender, EventArgs e)
{
if (Sidebar.Width == 270)
{
Sidebar.Visible = false;
Sidebar.Width = 68;
SidebarWrapper.Width = 90;
LineaSidebar.Width = 68;
AnimacionSidebar.Show(Sidebar);
}
else
{
Sidebar.Visible = false;
Sidebar.Width = 270;
SidebarWrapper.Width = 300;
LineaSidebar.Width = 268;
AnimacionSidebarBack.Show(Sidebar);
}
}
private void bunifuFlatButton8_Click(object sender, EventArgs e)
{
try
{
serialPort1.Close();
serialPort1.Dispose();
serialPort1.Open();
CheckForIllegalCrossThreadCalls = false;
label2.Text = "CONEXIÓN EXITOSA";
label2.ForeColor = Color.Green;
label2.Font = new Font(label2.Font, FontStyle.Bold);
openChildForm(new MUESTREO_EN_TIEMPO_REAL());
}
catch
{
label2.Text = "CONEXIÓN FALLIDA";
label2.ForeColor = Color.Red;
label2.Font = new Font(label2.Font, FontStyle.Bold);
MessageBox.Show("REVISE CONEXIÓN DE ARDUINO", "ADVERTENCIA", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
puerto_seleccionado = comboBox1.Text;
serialPort1.PortName = puerto_seleccionado;
}
private void bunifuFlatButton7_Click(object sender, EventArgs e)
{
comboBox1.Items.Clear();
label2.Text = "SIN CONEXIÓN";
label2.ForeColor = Color.White;
string[] puertos = SerialPort.GetPortNames();
foreach (string mostrar in puertos)
{
comboBox1.Items.Add(mostrar);
}
}
private Form activeForm = null;
private void openChildForm(Form childForm)
{
if (activeForm != null)
activeForm.Close();
activeForm = childForm;
childForm.TopLevel = false;
childForm.FormBorderStyle = FormBorderStyle.None;
childForm.Dock = DockStyle.Fill;
panel1.Controls.Add(childForm);
panel1.Tag = childForm;
childForm.BringToFront();
childForm.Show();
}
private void bunifuFlatButton2_Click(object sender, EventArgs e)
{
openChildForm(new MUESTREO_EN_TIEMPO_REAL());
}
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
string[] data = serialPort1.ReadLine().Split(',');
if (data.Length > 10)
{
}
else
{
MessageBox.Show("Intente nuevamente", "ADVERTENCIA", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);
}
}
}
}
Here is my second form:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace AUTOCLAVES_GUI
{
public partial class MUESTREO_EN_TIEMPO_REAL : Form
{
public MUESTREO_EN_TIEMPO_REAL()
{
InitializeComponent();
}
private void MUESTREO_EN_TIEMPO_REAL_Load(object sender, EventArgs e)
{
}
private void Salir_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
I hope someone can help me overcome this problem.

How to change textbox text automatically when other textbox text changes?

I have these textboxes named bags,rate,quantity,packing size and amount what i want to do is that when user enters bags and rate and packing size the quantity textbox should automatically shows the corresponding quantity and amount but in my case when i click on calculate button then it calculates and show the quantity and amount i have tried using textchanged event but it does not do the job?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Login
{
public partial class Sale : Form
{
SaleCalci sale;
SaleBillheader SaleHeaderModel = new SaleBillheader();
tbl_SaleBillDetails SaleDetailModel = new tbl_SaleBillDetails();
public Sale()
{
InitializeComponent();
}
private void Cancelbtn_Click(object sender, EventArgs e)
{
clear();
}
private void clear()
{
txtBillNo.Text = txtDesc.Text = "";
txtBags.Text = txtQty.Text = txtRate.Text = txtAmt.Text = "0.00";
if(txtQty.Text !=null && txtAmt.Text !=null )
{
txtQty.Text = "0.00";
txtAmt.Text = "0.00";
}
Savebtn.Text = "Save";
SaleHeaderModel.SaleBillHeaderId = 0;
SaleDetailModel.SaleBill_Id = 0;
}
private void Exitbtn_Click(object sender, EventArgs e)
{
var result = MessageBox.Show("Are you sure you want to close this form ?", "Confirm", MessageBoxButtons.YesNo);
if (result == DialogResult.Yes)
{ this.Close(); }
}
private void Sale_Load(object sender, EventArgs e)
{
ItemCombo();
PartyCombo();
PackingSizeCombo();
// clear();
}
private void ItemCombo()
{
UserDataEntities db = new UserDataEntities();
Itembox.DataSource = db.tbl_ItemId.ToList();
Itembox.ValueMember = "ItemId";
Itembox.DisplayMember = "ItemName";
}
private void PartyCombo()
{
UserDataEntities db = new UserDataEntities();
PartyBox.DataSource = db.tbl_Parties.ToList();
PartyBox.ValueMember = "Id";
PartyBox.DisplayMember = "PartyName";
}
private void PackingSizeCombo()
{
UserDataEntities db = new UserDataEntities();
PackingBox.DataSource = db.PackingSizes.ToList();
PackingBox.ValueMember = "PackingSizeId";
PackingBox.DisplayMember = "PackingSize1";
}
private void Savebtn_Click(object sender, EventArgs e)
{
CalculateAmount();
DisplayAmt();
}
private void CalculateAmount()
{
int bags = 0;
decimal rate = 0;
int pksize = 0;
bags = Convert.ToInt32(txtBags.Text);
rate = Convert.ToDecimal(txtRate.Text);
pksize = Convert.ToInt32(PackingBox.Text);
sale = new SaleCalci(bags,rate, pksize);
//sale.Bags = Convert.ToInt32(txtBags.Text);
//sale.Rate = Convert.ToDecimal(txtRate.Text);
//SaleDetailModel.Bags = int.Parse(txtBags.Text.Trim());
//SaleDetailModel.Qty = Convert.ToDecimal(txtQty.Text.Trim());
//SaleDetailModel.Rate = Convert.ToDecimal(txtRate.Text.Trim());
// SaleDetailModel.Amount = amount;
}
private void txtAmt_TextChanged(object sender, EventArgs e)
{
// txtAmt.Text = sale.CalucalteAmt.ToString();
}
private void Sale_Click(object sender, EventArgs e)
{
if ((txtBags.Text == "0.00") && (txtQty.Text == "0.00")&&(txtRate.Text == "0.00")&& (txtAmt.Text =="0.00"))
{
txtAmt.Clear();
txtBags.Clear();
txtQty.Clear();
txtRate.Clear();
}
}
private void txtQty_TextChanged(object sender, EventArgs e)
{
DisplayAmt();
}
private void txtBags_TextChanged(object sender, EventArgs e)
{
// sale.Bags = Convert.ToInt32(txtBags.Text);
// DisplayAmt();
}
private void PackingBox_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void txtRate_TextChanged(object sender, EventArgs e)
{
// DisplayAmt();
}
private void DisplayAmt()
{
decimal _amt = sale.CalucalteAmt;
txtQty.Text = sale.CalculateQty().ToString();
txtAmt.Text = _amt.ToString();
}
}
}

Normally "TextChanged" event fires autamatically if text value changes.
So here the problem is i think about your other "partial class" in which there has to exist eventhandler work. Something like:
txtBags.TextChanged += new EventHandler(txtBags_TextChanged);
Please check your other partial class if this staement exist.
This eventhandler sometimes disappears from project if you move your gui elements or for some other causes...
You can readd this statement manually.
By the way if you have not experience with the other partial class then you can try to remove these textboxes and re-add them then your problem will autamatically solves.

You need to call DisplayAmt in the TextChanged event of txtBags , txtRate and Size. In the code above, call to DisplayAmt is commented out. Instead, you are calling DisplayAmt in the TextChanged event of txtQty.
You should be, instead doing.
private void txtAmt_TextChanged(object sender, EventArgs e)
{
DisplayAmt();
}
private void txtRate_TextChanged(object sender, EventArgs e)
{
DisplayAmt();
}
Similarly, you need to add Changed event for Text Control for Size. The txtQty is updated by the DisplayAmt() method. So you don't necessarily need it, unless for reasons that are not specified in OP.

C# - Windows Application - Saving List

I have made a simple TO-DOs program that gets input from a text box then place it in another text box. With tick boxes next to it,
this is all fine except i Cannot save the list eg. the item and if it's finished or not.
Please could anyone help me be able to save this list of items.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace TO_DOs
{
public partial class Form1 : Form
{
private bool text1, text2, text3, text4, text5, text6, text7, text8;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (text1 == false)
{
textBox2.Text = textBox1.Text;
}
else if (text2 == false)
{
textBox3.Text = textBox1.Text;
}
else if (text3 == false)
{
textBox4.Text = textBox1.Text;
}
else if (text4 == false)
{
textBox5.Text = textBox1.Text;
}
else if (text5 == false)
{
textBox6.Text = textBox1.Text;
}
else if (text6 == false)
{
textBox7.Text = textBox1.Text;
}
else if (text7 == false)
{
textBox8.Text = textBox1.Text;
}
else if (text8 == false)
{
textBox9.Text = textBox1.Text;
}
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
text1 = true;
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
text2 = true;
}
private void textBox4_TextChanged(object sender, EventArgs e)
{
text3 = true;
}
private void textBox5_TextChanged(object sender, EventArgs e)
{
text4 = true;
}
private void textBox6_TextChanged(object sender, EventArgs e)
{
text5 = true;
}
private void textBox7_TextChanged(object sender, EventArgs e)
{
text6 = true;
}
private void textBox8_TextChanged(object sender, EventArgs e)
{
text7 = true;
}
private void textBox9_TextChanged(object sender, EventArgs e)
{
text8 = true;
}
}
}

I would do it like this:
Create a class to store your values in:
public class ListEntry
{
public string Text { get; set; }
public bool Finished { get; set; }
}
Then I would create 2 Methods:
public List<ListEntry> UI_To_List(); //Create UI from your saved file
public void List_To_UI(List<ListEntry> entries); //Process your UI
Now it's your choice on how to store your list.
You could store it as JSON or XML.
A few recommendations:
I would create a UserControl for your TextBox + CheckBox
Display the 'List of UserControls' in a FlowLayoutPanel
=> then you can process the FlowLayoutPanel.Controls List.
This will make your List dynamically size to an 'unlimited' amount of items.
Short example:
Create a UserControl (Rightclick project for that):
Add these 2 methods to the code of your UserControl (F7 / rightclick => View Code):
public void SetText(string text)
{
//Set the Text of your TextBox in the UserControl:
textBox1.Text = text;
}
public void SetFinished(bool finished)
{
//Set the Checked of your CheckBox in the UserControl:
checkBox1.Checked = finished;
}
In your MainForm add an FlowLayoutPanel (from ToolBox).
Add your Data like this (using class from above):
/// <summary>
///
/// </summary>
/// <param name="entries">You will get them from loading your previously saved file</param>
public void CreateUI(List<ListEntry> entries)
{
foreach (ListEntry entry in entries)
{
//Create new instance of your UserControl
TaskView view = new TaskView();
view.SetFinished(entry.IsFinished);
view.SetText(entry.Text);
//Add that to your UI:
this.flowLayoutPanel1.Controls.Add(view);
}
}
The result will look like this:

I'm not sure what exactly it is that you want to save in a list... but here's just a tip when checking conditions, instead of using if (text1 == false), simply do if (!text1) as this means "is not true" because by default if (text1) will return true.
private void button1_Click(object sender, EventArgs e)
{
if (!text1)
{
textBox2.Text = textBox1.Text;
}
else if (!text2)
{
textBox3.Text = textBox1.Text;
}
// Left out the rest of the else ifs
}

You are casting textboxes wrong. For example when you change textBox4, you gave text3 true.
private void textBox4_TextChanged(object sender, EventArgs e)
{
text3 = true;
}
Then you cast
TextBox4.Text = TextBox1.Text;
It changes TextBox4.Text to TextBox1.Text.
You probably want to save TextBox4.Text here at TextBox1.Text so you sould change all if blocks like that. So you have to give only one "true" function for changed textBox sign and change if blocks
if(text(boolNum))
TextBox1.Text = TextBox(Number).Text;
Just swap them and try like that.
If you want to save another thing by another way. You have to be more spesific.

You can use a CheckedListbox to hold all tot actions.
You can then tick the itemsand for instance in the OK button you include a save action:
foreach(var item in MyCheckedListbox.CheckedItems)
{
Console,WriteLine(item.Text);
}

Lets see the answer from Felix D. He tells you exactly how to create a class and save the items into it. But now you only have a List that will be available as long as your software is running. You still need to save it somewhere on your desktop.
Lucky for you, you got a really simple pattern.
string; boolean
So how about you make it yourself simple? Just create a textfile and write your entries, as example in a csv marked with a ; for every information?
Example:
class Program
{
public class tmpClass
{
public string Text;
public bool tick;
}
public List<tmpClass> tmpList = new List<tmpClass>();
static void Main(string[] args)
{
//Stuff
}
public void WriteToFile()
{
string tmpTextFilePath = #"C:\User\Desktop\SaveText.txt";
using (StreamWriter tmpWriter = new StreamWriter(tmpTextFilePath))
{
string tmpTextToWrite = String.Empty;
for (int i = 0; i < tmpList.Count; i++)
{
tmpClass tmpEntry = tmpList[i];
tmpTextToWrite += tmpEntry.Text + ";" + tmpEntry.tick;
}
tmpWriter.WriteLine(tmpTextToWrite);
}
//Now we wrote a text file to you desktop with all Informations
}
public void ReadFromFile()
{
string tmpTextFilePath = #"C:\User\Desktop\SaveText.txt";
using (StreamReader tmpReader = new StreamReader(tmpTextFilePath))
{
string tmpText = tmpReader.ReadLine();
string tmpInput = String.Empty;
tmpClass tmpClass = new tmpClass();
int i = 0;
foreach (char item in tmpText)
{
if(item.Equals(";".ToCharArray()))
{
if (i == 0)
{
tmpClass.Text = tmpInput;
i = 1;
tmpInput = String.Empty;
}
else
{
if (tmpInput == "True")
tmpClass.tick = true;
else
tmpClass.tick = false;
i = 0;
tmpInput = String.Empty;
tmpList.Add(tmpClass);
}
}
tmpInput += item;
}
}
}
}
This should simply write a txt File to your desktop with your information and read one and save it to your list.

search a string in textbox from a source code file in c#

I'm a newbie to here. and i don't have any expirience in coding.I was stuck in coding part of my project.I have done it in C# in visual studio
I wanted to search a string typed in text box in a file that is open as another string which is a source code. And i wanted to check the typed string is there before a 20 characters in front of the word "$_POST" which is in the source code.and if the string is there, print something. I have attached the code until i have done.Please help me.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace XSS_Prevention_Tool
{
public partial class Home : Form
{
int count = 0,lc=0;
string language;
public Home()
{
InitializeComponent();
}
private void Home_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
languageSelection();
folderBrowserDialog1.ShowDialog();
txtpath.Text= folderBrowserDialog1.SelectedPath.ToString();
ColumnHeader header1 = new ColumnHeader();
header1.Text = " Scanning: ";
header1.Width = listFiles.ClientSize.Width;
listFiles.Columns.Add(header1);
DirSearch(folderBrowserDialog1.SelectedPath.ToString());
}
private void languageSelection()
{
if (rdoASP.Checked == true)
{
language = "asp";
}
else if (rdoJSP.Checked == true)
language = "jsp";
else if (rdoPHP.Checked == true)
language = "php";
else
MessageBox.Show("Select a language");
lblLanguage.Text = language;
textBox2.Visible = true;
}
public void DirSearch(string dir)
{
try
{
foreach (string f in Directory.GetFiles(dir))
{
string e = Path.GetExtension(f);
if (e == "."+language)
{
listFiles.Items.Add(f);
lc++;
textBox2.Text = lc.ToString();
XSS(f);
}
count++;
textBox1.Text = count.ToString();
}
foreach (string d in Directory.GetDirectories(dir))
{
DirSearch(d);
}
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void XSS(string f)
{
String methode = "$_POST";
System.IO.StreamReader myFile = new System.IO.StreamReader(f);
string myString = myFile.ReadToEnd();
myFile.Close();
if (myString.Contains(methode))
{
int pos = myString.IndexOf(methode);
MessageBox.Show(pos.ToString());
}
}
private void label2_Click(object sender, EventArgs e)
{
}
private void listFiles_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void txtpath_TextChanged(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
}
}
}

I assume you need to find the substring within a string. Just go through these examples and try to find a solution.
http://www.dotnetperls.com/substring
Substring in C# string Class returns a new string that is a substring of this string. The substring begins at the specified given index and extended up to the given length.
string string.substring(int startIndex,int length)
Parameters:
startIndex: The index of the start of the substring.
length: The number of characters in the substring.
Returns:
The specified substring.
Exceptions:
System.ArgumentOutOfRangeException : the beginIndex or length less than zero, or the begin index + length not within the specified string

Serial port communication in Visual Studio C#

I have used this code in VS
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 WindowsFormsApplication1
{
public partial class Form1 : Form
{
string RxString,ComPort;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
serialPort1.PortName = "COM5";
serialPort1.BaudRate = 9600;
serialPort1.Parity = Parity.None;
serialPort1.StopBits = StopBits.One;
serialPort1.Handshake = Handshake.None;
serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);
}
private void Start_Click(object sender, EventArgs e)
{
serialPort1.PortName = ComPort;
serialPort1.BaudRate = 9600;
serialPort1.Open();
if(serialPort1.IsOpen)
{
Start.Enabled = false;
Stop.Enabled = true;
textBox1.ReadOnly = false;
}
}
private void Stop_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
Start.Enabled = true;
Stop.Enabled = false;
textBox1.ReadOnly = true;
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (serialPort1.IsOpen) serialPort1.Close();
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if (!serialPort1.IsOpen) return;
char[] buff = new char[1];
buff[0] = e.KeyChar;
serialPort1.Write(buff, 0 , 1);
e.Handled = true;
}
private void DisplayText(object sender, EventArgs e)
{
textBox1.AppendText(RxString);
}
private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
RxString = serialPort1.ReadExisting();
this.Invoke(new EventHandler(DisplayText));
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
ComPort = comboBox1.SelectedItem.ToString();
}
}
}
but it's not working, I have tried using an avr for transmitting characters and successfully tested in hercules what its transmitting. But it is not showing up in my program. Please help.
I have updated the code and its working fine for receiving part but not transmitting correctly, i am not getting any error it is just not working as it should have worked.

You must set all the properties of your serialPort1.
Also, you should try to debug at multiple place to help us where it's going wrong : Does IsOpen return true? if no, this explain why you receive nothing.
See MSDN example if you want to try something is supposed to work : http://msdn.microsoft.com/en-us/library/system.io.ports.serialport.aspx
Be sure that the serial port is not alerady open by another program and you have selected the good COM PORT. Otherwise the code looks good. (You could also looks in the RxString value each time you are passing by. (maybe many empty space or "/r"))

[Serializable]
public class Customer
{
[XmlElement("FirstName")]
public string FirstName { get; set; }
[XmlElement("LastName")]
public string LastName { get; set; }
[XmlElement("Age")] public int Age { get; set; }
public bool ShouldSerializeLastName()
{
return Age > 18; // Enter here only if it is XmlSerialize.
}
}