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Losing \n when sent to other form c#

I am working on a project where im supposed to send a list of titles to a "central computer".
My problem is that when I send them with the button sendAll I lose a couple och linebreaks.
Anyone got some advice on how to get this to work?
Since this is a school assignment I cant access the "central computer". I can only work with my own program.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Avdelningsrapport
{
public partial class KlientForm : Form
{
TcpClient client = new TcpClient();
int port = 12345;
FileLoader fileLoader = new FileLoader();
List<Book> ListOfBooks = FileLoader.BookIndex;
public KlientForm()
{
InitializeComponent();
client.NoDelay = true;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void btnImportData_Click(object sender, EventArgs e)
{
foreach (Book item in ListOfBooks)
{
listBoxObj.Items.Add(item);
}
}
private void btnConnect_Click(object sender, EventArgs e)
{
if (!client.Connected) StartConnection();
if (client.Connected)
{
btnConnect.BackColor = Color.Green;
}
}
public async void StartConnection()
{
try
{
IPAddress adress = IPAddress.Parse("127.0.0.1");
await client.ConnectAsync(adress, port);
}
catch (Exception error) { MessageBox.Show(error.Message, Text); return;}
btnConnect.Enabled = false;
btnSendAll.Enabled = true;
btnSendMarked.Enabled = true;
}
private void btnSendAll_Click(object sender, EventArgs e)
{
if (!client.Connected)
{
MessageBox.Show("Du måste ansluta till servern.");
}
else
{
if (listBoxObj.Items.Count == 0)
{
MessageBox.Show("Det finns inga böcker att skicka.");
}
else
{
foreach (Book item in listBoxObj.Items)
{
StartSend(item.ToString());
}
ListOfBooks.Clear();
listBoxObj.Items.Clear();
}
}
}
private void btnSendMarked_Click(object sender, EventArgs e)
{
if (!client.Connected)
{
MessageBox.Show("Du måste ansluta till servern.");
}
else
{
if (listBoxObj.SelectedIndex == -1)
{
MessageBox.Show("Du måste välja en bok du vill skicka.");
}
else
{
StartSend(listBoxObj.SelectedItem.ToString());
ListOfBooks.RemoveAt(listBoxObj.SelectedIndex);
listBoxObj.Items.RemoveAt(listBoxObj.SelectedIndex);
}
}
}
public async void StartSend(string SendingBook)
{
byte[] outData = Encoding.Unicode.GetBytes(SendingBook);
try
{
await client.GetStream().WriteAsync(outData, 0, outData.Length);
}
catch (Exception error) { MessageBox.Show(error.Message, Text); return; }
}
}
}

Perform web searches through C # Windows forms

I'm trying to realize web searches to get the title of websites on a Google search.
I got a code that works well on other sites, but using Google I got duplicated results.
I have tried and tried, but I can't see where is the mistake.
Code simplified:
public partial class Form1 : Form
{
WebBrowser navegador = new WebBrowser();
private void Form1_Load(object sender, EventArgs e)
{
navegador.ScriptErrorsSuppressed = true;
navegador.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(this.datos);
}
private void datos(object sender, EventArgs e)
{
try
{
foreach (HtmlElement etiqueta in navegador.Document.All)
{
if (etiqueta.GetAttribute("classname").Contains("LC20lb DKV0Md"))
{
listBox1.Items.Add(etiqueta.InnerText);
}
}
}
catch (Exception exception) { }
}
private void function(object sender, EventArgs e)
{
/// string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate("https://google.com/search?q=water");
/// this.Text = query;
}
}
Result:

I don't know how google works but you can prevent duplicates like this
if(!listBox1.Items.Contains(etiqueta.InnerText))
listBox1.Items.Add(etiqueta.InnerText);

After a couple of days researching and improving the code I decided to change the list for a table.
In addition, now the searches are not duplicated and are positioned in the table as expected
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 SourceDownloader
{
public partial class Form1 : Form
{
strs valor = new strs();
public Form1()
{
InitializeComponent();
}
WebBrowser navegador = new WebBrowser();
private void Form1_Load(object sender, EventArgs e)
{
navegador.ScriptErrorsSuppressed = true;
navegador.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(this.datos);
}
private void datos(object sender, EventArgs e)
{
try
{
foreach (HtmlElement etq in navegador.Document.All)
{
if (etq.GetAttribute("classname").Contains("r")) /// LC20lb DKV0Md
{
foreach (HtmlElement a_et in etq.GetElementsByTagName("a"))
{
valor.link = a_et.GetAttribute("href");
}
foreach (HtmlElement t_et in etq.GetElementsByTagName("h3"))
{
valor.tit = t_et.InnerText;
}
bool exist = dataGridView1.Rows.Cast<DataGridViewRow>().Any(row => Convert.ToString(row.Cells["link"].Value) == valor.link);
var s1 = valor.link;
bool b = s1.Contains("google.com");
bool a = s1.Contains("googleusercontent");
if (!exist /* && !b && !a*/)
{
dataGridView1.Rows.Insert(0, valor.tit, valor.link);
}
}
if (etq.GetAttribute("classname").Contains("G0iuSb"))
{
valor.next = etq.GetAttribute("href");
}
}
more_ops.Enabled = true;
}
catch (Exception)
{
}
}
private void function(object sender, EventArgs e)
{
string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate(query);
this.Text = query;
}
private void more_ops_Click(object sender, EventArgs e)
{
string query = valor.next;
navegador.Navigate(query);
this.Text = query;
}
private void dataGridView1_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)
{
try
{
var msg = dataGridView1.CurrentCell.Value;
System.Diagnostics.Process.Start(msg.ToString());
}
catch (Exception)
{
MessageBox.Show("Error");
}
}
private void Enter(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Return)
{
string texto = query_box.Text;
texto = texto.Replace("\n", "");
query_box.Text = texto;
string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate(query);
this.Text = query;
}
}
}
/// global values
class strs
{
private string _link = "N/A";
private string _tit = "N/A";
private string _next = "N/A";
public string tit
{
get
{
return _tit;
}
set
{
_tit = value;
}
}
public string link
{
get
{
return _link;
}
set
{
_link = value;
}
}
public string next
{
get
{
return _next;
}
set
{
_next = value;
}
}
}
}

C# Pcap.net communication

I would like to ask why is my communicator receiving sent frames. I'm trying to fix this problem using flag PacketDeviceOpenAttributes.NoCaptureLocal for receiving communicator but I'm still receiving sent frames. Could anyone know how to fix this problem? Thank you. Here is my code:
using PcapDotNet.Core;
using PcapDotNet.Packets;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace PSIP
{
public partial class Form2 : Form
{
private Packet packet;
private List<Packet> buffer;
private IList<LivePacketDevice> allDevices;
private LivePacketDevice selectedDevice, sendDevice;
private int pkt_cnt;
private Thread thrReceive,thrSend;
public Form2(LivePacketDevice device)
{
InitializeComponent();
Show();
selectedDevice = device;
pkt_cnt = 0;
buffer = new List<Packet>();
allDevices = LivePacketDevice.AllLocalMachine;
for (int i = 0; i != allDevices.Count; ++i)
{
LivePacketDevice tempDevice = allDevices[i];
if (device.Description != null)
{
ListViewItem row = new ListViewItem(tempDevice.Name);
listDevices.Items.Add(row);
}
}
}
private void PacketHandler(object obj)
{
throw new NotImplementedException();
}
private void PacketHandler(Packet packet)
{
ListViewItem itemPacket = new ListViewItem(pkt_cnt.ToString());
itemPacket.SubItems.Add(packet.Ethernet.Destination.ToString());
itemPacket.SubItems.Add(packet.Ethernet.Source.ToString());
pktView.Items.Add(itemPacket);
buffer.Add(packet);
pkt_cnt++;
}
private void Sending()
{
for (int i = 0; i <= allDevices.Count; ++i)
{
sendDevice = allDevices[i];
if (sendDevice.Name.Equals(listDevices.SelectedItems[0].Text))
{
i = allDevices.Count;
}
}
using (PacketCommunicator communicator = sendDevice
.Open(100, PacketDeviceOpenAttributes.Promiscuous | PacketDeviceOpenAttributes.NoCaptureLocal, 1000))
{
int index = Int32.Parse(pktView.SelectedItems[0].Text);
Packet tmpPacket = buffer.ElementAt(index);
communicator.SendPacket(tmpPacket);
}
}
private void Receiving()
{
int c = int.Parse(packetcount.Text);
using (PacketCommunicator communicator = selectedDevice.Open(65536,
PacketDeviceOpenAttributes.NoCaptureRemote | PacketDeviceOpenAttributes.Promiscuous, 1000))
{
communicator.ReceivePackets(c, PacketHandler);
}
}
private void button1_Click(object sender, EventArgs e)
{
thrReceive = new Thread(Receiving);
thrReceive.Start();
}
private void buttonSend_Click(object sender, EventArgs e)
{
thrSend = new Thread(Sending);
thrSend.Start();
}
private void pktView_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
int index = Int32.Parse(pktView.SelectedItems[0].Text);
Packet tmpPacket = buffer.ElementAt(index);
textPacket.ResetText();
textPacket.AppendText(tmpPacket.Ethernet.ToHexadecimalString());
}
catch (Exception E)
{
Console.WriteLine(E.ToString());
}
}
private void buttonClear_Click(object sender, EventArgs e)
{
pktView.Items.Clear();
buffer.Clear();
pkt_cnt = 0;
}
} }

You seem to be using different PacketCommunicators, one for sending and one for receiving.
The documentation for NoCaptureRemote states "Defines if the local adapter will capture its own generated traffic.".
Since you're using two different communicators, the receiving communicator captures the sending communicator.

Usercontrol event firing multiple times asp.net c#

I've got the following code: -
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
namespace Testing.Event_Delegate
{
public partial class WebForm1 : System.Web.UI.Page
{
WebUserControl2 QT2;
WebUserControl3 QT3;
DataTable dtQuestionSet;
protected void Page_Init(object sender, EventArgs e)
{
dtQuestionSet = (DataTable)Session["DataTableW"];
}
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack == false)
{
Session["Counter"] = 0;
Session["QuestionCount"] = 0;
Session["CompletedInsp"] = false;
}
//check to see if the inspection process is complete and display pass\fail and log. Else carry on.
if (Convert.ToBoolean(Session["CompletedInsp"]) == true)
{
//Response.Write("Failed");
ModalPopupExtender2.Show();
return;
}
// all controls need to be rendered every page postback otherwise the rest of the code loses scope.
QT2 = (WebUserControl2)this.LoadControl("WebUserControl2.ascx");
UC2BtnClickEvent.MyEvent2 += new UC2BtnClickEvent.OnMyEvent2(ChecKResult);
QT3 = (WebUserControl3)this.LoadControl("WebUserControl3.ascx");
UC2BtnClickEvent.MyEvent3 += new UC2BtnClickEvent.OnMyEvent3(ChecKResult);
PlaceHolder2.Controls.Add(QT2);
PlaceHolder2.Controls.Add(QT3);
QT2.Visible = false;
QT3.Visible = false;
if (IsPostBack == false)
{
dtQuestionSet = new DataTable();
MakeDataTabledtQuestionSet();
}
else
{
dtQuestionSet = (DataTable)Session["DataTableW"];
}
Session["DataTableW"] = dtQuestionSet;
}
void ChecKResult(object sender, EventArgs e, string strTextBox, string strMyDescription)
{
Label1.Text = "You Answered: - " + strMyDescription;
if (Convert.ToInt32(Session["Counter"]) > Convert.ToInt32(Session["QuestionCount"]))
{
Session["CompletedInsp"] = true;
}
else
{
//carry on with inspection
Session["Counter"] = Convert.ToInt32(Session["Counter"]) + 1;
dtQuestionSet = (DataTable)Session["DataTableW"];
RunInspection();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("WebForm1.aspx");
}
protected void cmdStartInspection_Click(object sender, EventArgs e)
{
Session["Counter"] = 0;
GetQuestions();
}
protected void GetQuestions()
{
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["PromptedInspConnectionString"].ConnectionString);
conn.Open();
SqlCommand cmd = new SqlCommand("test.GetQuestions", conn);
SqlDataReader dr = null;
cmd.CommandType = CommandType.StoredProcedure;
//cmd.Parameters.Add(new SqlParameter("#Block1", cmbBlock1.Text));
dr = cmd.ExecuteReader();
while (dr.Read())
{
DataRow drQuestions = dtQuestionSet.NewRow();
drQuestions["QuestionText"] = dr[1].ToString();
drQuestions["ExpectedResponse"] = dr[2].ToString();
drQuestions["QuestionType"] = dr[3].ToString();
dtQuestionSet.Rows.Add(drQuestions);
}
Session["DataTableW"] = dtQuestionSet;
Session["QuestionCount"] = dtQuestionSet.Rows.Count;
conn.Close();
RunInspection();
}
protected void RunInspection()
{
switch (dtQuestionSet.Rows[Convert.ToInt32(Session["counter"])][2].ToString())
{
case "1":
QT2.QuestionText = dtQuestionSet.Rows[0][0].ToString();//"I'm asking a question 1";
QT2.Visible = true;
break;
case "2":
QT3.QuestionText = dtQuestionSet.Rows[0][0].ToString();//"I'm asking a question 2";
QT3.Visible = true;
break;
}
}
private void MakeDataTabledtQuestionSet()
{
dtQuestionSet.Columns.Add("QuestionText");
dtQuestionSet.Columns.Add("ExpectedResponse");
dtQuestionSet.Columns.Add("QuestionType");
}
}
}
When I click on the button on a usercontrol with the code: -
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Testing.Event_Delegate
{
public partial class WebUserControl2 : System.Web.UI.UserControl
{
string questionAsked;
public string QuestionText
{
set { questionAsked = value; }
get { return questionAsked; }
}
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = QuestionText;
TextBox1.Focus();
}
protected void Button1_Click(object sender, EventArgs e)
{
UC2BtnClickEvent bEvent = new UC2BtnClickEvent();
bEvent.onRefresh2Event3(sender, e, TextBox1.Text, TextBox1.Text );
TextBox1.Text = "";
}
}
}
It runs the procedure CheckResults 3 times on the aspx page when I only need it to run once.
UC2BtnClickEvent.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Testing.Event_Delegate
{
public class UC2BtnClickEvent
{
public delegate void OnMyEvent2(object sender, EventArgs e, string strTextBox, string strMyDescription);
public static event OnMyEvent2 MyEvent2;
public virtual void onRefresh2Event2(object sender, EventArgs e, string strTextBox, string strMyDescription)
{
if (MyEvent2 != null)
{
MyEvent2(sender, e, strTextBox, strMyDescription);
}
}
public delegate void OnMyEvent3(object sender, EventArgs e, string strTextBox, string strMyDescription);
public static event OnMyEvent3 MyEvent3;
public virtual void onRefresh2Event3(object sender, EventArgs e, string strTextBox, string strMyDescription)
{
if (MyEvent3 != null)
{
MyEvent3(sender, e, strTextBox, strMyDescription);
}
}
}
}
What have I done wrong to make this happen please as it should only run once.

Transferring from one form to another

So I'm trying to find out and breaking each method while running my codes, and I still can't find why setTempID is always 0, I already assigned a value to it.
Here is my code.
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.Data.Sql;
using System.Data.SqlClient;
//imports
using DHELTASSys.DataAccess;
using DHELTASSys.Modules;
using DHELTASSys.AuditTrail;
namespace Enrollment
{
public partial class HRLogin : Form
{
HRModuleBL obj = new HRModuleBL();
DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();
public HRLogin()
{
InitializeComponent();
}
private void txtLogin_Click(object sender, EventArgs e)
{
obj.Emp_id = int.Parse(txtEmpID.Text);
audit.Emp_id = int.Parse(txtEmpID.Text);
obj.Password = txtPassword.Text;
if (obj.AccountEnrollmentLogin().Rows.Count == 0)
{
MessageBox.Show("Username and Password is incorrect!");
}
else if (obj.CheckIfHRManager().Rows.Count == 0)
{
MessageBox.Show("You are not allowed to access this system!");
}
else
{
CreateAccount frm = new CreateAccount();
frm.FormClosed += new FormClosedEventHandler(frm_FormClosed);
audit.AddAuditTrail("Has logged in into the Fingerprint Enrollment System.");
frm.setEmpID = int.Parse(txtEmpID.Text);
frm.Show();
this.Hide();
}
}
void frm_FormClosed(object sender, FormClosedEventArgs e)
{
this.Show();
}
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
and here is the other form
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
//imports
using DHELTASSys.AuditTrail;
using DHELTASSys.Modules;
namespace Enrollment
{
delegate void Function(); // a simple delegate for marshalling calls from event handlers to the GUI thread
public partial class CreateAccount : Form
{
HRModuleBL obj = new HRModuleBL();
DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();
private int emp_id;
public int setEmpID
{
set { emp_id = value;}
}
public CreateAccount()
{
InitializeComponent();
}
private void CloseButton_Click(object sender, EventArgs e)
{
Close();
}
private void OnTemplate(DPFP.Template template)
{
this.Invoke(new Function(delegate()
{
Template = template;
VerifyButton.Enabled = SaveButton.Enabled = (Template != null);
if (Template != null)
MessageBox.Show("The fingerprint template is ready for verification and saving", "Fingerprint Enrollment");
else
MessageBox.Show("The fingerprint template is not valid. Repeat fingerprint enrollment.", "Fingerprint Enrollment");
}));
}
private DPFP.Template Template;
private void EnrollButton_Click(object sender, EventArgs e)
{
EnrollmentForm Enroller = new EnrollmentForm();
Enroller.OnTemplate += this.OnTemplate;
Enroller.ShowDialog();
}
private void SaveButton_Click(object sender, EventArgs e)
{
obj.Last_name = txtLastname.Text;
obj.First_name = txtFirstName.Text;
obj.Middle_name = txtMiddleName.Text;
obj.Position_name = cmbPosition.Text;
obj.Company_name = cmbCompany.Text;
obj.Password = txtTempPassword.Text;
obj.Department_name = cmbDepartment.Text;
if (obj.Last_name == string.Empty) //Validation for empty texts
{
MessageBox.Show("Last name can't be empty!");
} else if (obj.First_name == string.Empty)
{
MessageBox.Show("First name can't be empty!");
}
else if (obj.Middle_name == string.Empty)
{
MessageBox.Show("Middle name can't be empty!");
}
else if (obj.Position_name == string.Empty)
{
MessageBox.Show("Position name can't be empty!");
}
else if (obj.Department_name == string.Empty)
{
MessageBox.Show("Deparment can't be empty!");
}
else if (obj.Company_name == string.Empty)
{
MessageBox.Show("Company name can't be empty!");
}
else if (obj.Password == string.Empty)
{
MessageBox.Show("Password can't be empty!");
}
else if (txtConfirmTempPassword.Text == string.Empty)
{
MessageBox.Show("Please verify your input password!");
}
else
{
if (txtTempPassword.Text != txtConfirmTempPassword.Text)
{
MessageBox.Show("Password does not match", "Password Mismatch",
MessageBoxButtons.OK);
}
else
{
MemoryStream fingerprintData = new MemoryStream();
Template.Serialize(fingerprintData);
fingerprintData.Position = 0;
BinaryReader br = new BinaryReader(fingerprintData);
Byte[] bytes = br.ReadBytes((Int32)fingerprintData.Length);
audit.Emp_id = emp_id;
obj.Biometric_code = bytes;
obj.AddAccountSetTempPassword();
}
}
}
private void VerifyButton_Click(object sender, EventArgs e)
{
VerificationForm Verifier = new VerificationForm();
Verifier.Verify(Template);
}
}
}
I'm setting it to frm.setEmpID so that I could get it from another form.
Thanks for the help man.

Perhaps in your SaveButton_Click event in the CreateAccount form you need to set also the Emp_Id variable of the obj instance defined inside that form (as you have done in the instance of the HRModuleBL defined in the first form).
private void SaveButton_Click(object sender, EventArgs e)
{
.....
audit.Emp_id = emp_id;
obj.Emp_id = emp_id;
obj.Biometric_code = bytes;
obj.AddAccountSetTempPassword();
.....
}