I have this error and i don't know how to fix it, i can't find whats wrong with my code so i ask help to the ppl that are reading this and know the solution.
The error is at the button voids(exept the start button void). tried to switch between the URLtexbox and the Combobox but somewhere i screwed up, i've tried a lot to fix it but i couldn't find out how to fix 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.Web;
namespace ****
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
webBrowser1.ScriptErrorsSuppressed = true;
}
private void startbutton_Click(object sender, EventArgs e)
{
switch (Text)
{
case "full":
{
webBrowser1.Navigate(URLtextbox.Text);
}
break;
case "empety":
{
webBrowser1.Navigate(comboBox1.Text);
}
break;
}
}
}
private void stopbutton_Click(object sender, EventArgs e)
{
webBrowser1.Stop();
}
private void forwardbutton_Click(object sender, EventArgs e)
{
webBrowser1.GoForward();
}
private void backbutton_Click(object sender, EventArgs e)
{
webBrowser1.GoBack();
}
}
Thanks for helping ^.^
The 3 methods (stopbutton_Click, forwardbutton_Click and backbutton_Click) must be defined inside a class.
Or in other words: Move the closing brace of the class below the last method.
Related
Iam very new to coding so please pardon my lack of knowledge.
I made a program "Music player" that uses webBrowser to play video from youtube but from what i understood from other posts it cant work due to webBrowser being IE7. I dont neccessarily have to use webBrowser but it seemed like the best way.
Is there a way to "update" IE or do i need to use different method?
code:
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.Text.RegularExpressions;
namespace MusicPlayer_V4._1
{
public partial class Form1 : Form
{
string _ytUrl;
public Form1()
{
InitializeComponent();
}
public string VideoId
{
get
{
var ytMatch = new Regex(#"youtu(?:\.be|be\.com) / (?:.*v(?:.*/|=)|(?:.*/)?)([a-zA-Z0-_]+)").Match(_ytUrl);
return ytMatch.Success ? ytMatch.Groups[1].Value : string.Empty;
}
}
//user input (URL)
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
//play button
private void button1_Click(object sender, EventArgs e)
{
_ytUrl = txtUrl.Text;
webBrowser.Navigate($"http://youtube.com/v/{VideoId}?version=3");
}
//help button
private void button2_Click(object sender, EventArgs e)
{
}
//browser
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
}
}
The way moving forward is to use WebView2 which is basically the same thing as a WebView but based on the chromium-based edge. It will be always up to date on windows 10/11 machines and it works down to Windows 7.
https://developer.microsoft.com/en-us/microsoft-edge/webview2/
I am new to C# and I want to create a windows forms application, which shows (it must be visible!) one window with some information and buttons and also it loads a page from internet (with selenium and phantom.js - though it is deprecated) every minute. I've written something like this:
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;
using System.Diagnostics;
using OpenQA.Selenium;
using OpenQA.Selenium.PhantomJS;
namespace WindowsFormsApplication1
{
public partial class Someclass : Form
{
private void label1_Click(object sender, EventArgs e)
{
}
private void Someclass_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
// Shows some text "Hello friend"
MessageBox.Show("Hello friend!");
}
private void button2_Click(object sender, EventArgs e)
{
MessageBox.Show("Hello again", "Warning!", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
public Someclass()
{
InitializeComponent();
while (!IsDisposed)
{
MessageBox.Show("Now the page will be downloaded");
var driverService = PhantomJSDriverService.CreateDefaultService();
driverService.HideCommandPromptWindow = true;
using (var driver = new PhantomJSDriver(driverService))
{
driver.Navigate().GoToUrl("http://stackoverflow.com/");
MessageBox.Show("Here we are going to open StackOverflow");
var questions = driver.FindElements(By.ClassName("fs-display2"));
foreach (var question in questions)
{
// This will display some text from stackoverflow main page.
Console.WriteLine(question.Text);
question.Click();
MessageBox.Show("This is stackoverflow: " + question.Text);
}
MessageBox.Show("Here we go");
}
System.Threading.Thread.Sleep(60000); // delay in microseconds
}
}
}
My problem is that if I use "while", my window does not appear (but the page from internet loads correctly - every 1 minute), and if I use "if" instead of "while", my window appears well, but, of cource, the page loading goes only one time. What can solve my problem?
It's a quite simple solution: your while loop is preventing your UI from Update. You have to bring your loop in an extra Thread, or just use a backgroundworker
Yes, friends, you were right. I have put (using panel of instruments-> Background Worker):
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
this.backgroundWorker1.DoWork += new System.ComponentModel.DoWorkEventHandler(this.backgroundWorker1_DoWork);
while (!IsDisposed)
{
......................
}
System.Threading.Thread.Sleep(60000); // delay in microseconds
}
inside my public partial class someClass : Form after public Someclass()
and also added:
backgroundWorker1.RunWorkerAsync(2000);
inside my public Someclass()
So now the code looks like:
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;
using System.Diagnostics;
using OpenQA.Selenium;
using OpenQA.Selenium.PhantomJS;
namespace WindowsFormsApplication1
{
public partial class Someclass : Form
{
private void label1_Click(object sender, EventArgs e)
{
}
private void Someclass_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
// Shows some text "Hello friend"
MessageBox.Show("Hello friend!");
}
private void button2_Click(object sender, EventArgs e)
{
MessageBox.Show("Hello again", "Warning!", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
public Someclass()
{
InitializeComponent();
backgroundWorker1.RunWorkerAsync(2000);
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
this.backgroundWorker1.DoWork += new System.ComponentModel.DoWorkEventHandler(this.backgroundWorker1_DoWork);
while (!IsDisposed)
{
MessageBox.Show("Now the page will be downloaded");
var driverService = PhantomJSDriverService.CreateDefaultService();
driverService.HideCommandPromptWindow = true;
using (var driver = new PhantomJSDriver(driverService))
{
driver.Navigate().GoToUrl("http://stackoverflow.com/");
MessageBox.Show("Here we are going to open StackOverflow");
var questions = driver.FindElements(By.ClassName("fs-display2"));
foreach (var question in questions)
{
// This will display some text from stackoverflow main page.
Console.WriteLine(question.Text);
question.Click();
MessageBox.Show("This is stackoverflow: " + question.Text);
}
MessageBox.Show("Here we go");
}
System.Threading.Thread.Sleep(60000); // delay in microseconds
}
}
}
and works fine.
I am currently using WinForms Application and it seems that I have ran into a problem. I have a button that when pressed it outputs a link in a RichTextBox. However, the link is highlighted in blue but when I click it does not open in my browser. Here is the code(Note that https://something.com/ represents an actual link.):
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Project
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
richTextBox1.Text = "https://something.com/" + textBox1.Text;
}
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
}
}
}
I am trying to make a room request program and have two windows that I need to connect to the database (which I know how to do). The two windows are called EMERGENCY and JANITOR. My issue is I don't know how to store information in a database. Like let's say someone logs in as EMERGENCY and sends a request, the information needs to be stored and once the JANITOR logs in, he can see the requests. So far I have the database but not sure about storing information in it without manually adding them. If anyone has any guides or links on how to do this, I'd appreciate it!
EMERGENCY window 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.SqlClient;
namespace LOGINPAGE
{
public partial class EMERGENCY : Form
{
public EMERGENCY()
{
InitializeComponent();
}
void Fillcombo()
{
}
private void EMERGENCY_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'roomInfoDataSet6.Table' table. You can move, or remove it, as needed.
}
private void xButton1_Click(object sender, EventArgs e)
{
this.Close();
Application.Exit();
}
private void xButton2_Click(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void Search_Click(object sender, EventArgs e)
{
}
}
}
JANITOR 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;
namespace LOGINPAGE
{
public partial class JANITOR : Form
{
public JANITOR()
{
InitializeComponent();
}
private void label1_Click(object sender, EventArgs e)
{
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
private void JANITOR_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'roomInfoDataSet3.Table' table. You can move, or remove it, as needed.
this.tableTableAdapter.Fill(this.roomInfoDataSet3.Table);
}
private void xButton4_Click(object sender, EventArgs e)
{
}
private void xButton2_Click(object sender, EventArgs e)
{
this.Close();
Application.Exit();
}
}
}
EMERGENCY
JANITOR
You can use Ms access db
You will find connecting to acess from c# to really easy with lots of YouTube video tutorials
I can have a table in it database that is updated by a "save emergency" button and a load emergency button by the janitor will just populate a datagridview with items from the same table filled with the first button
My TextBox won't update! I am using it as a Log to update what other things are doing...
Form 1 code:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Data.OleDb;
using System.Collections.Specialized;
using System.Text;
delegate void logAdd(string message);
namespace LCR_ShepherdStaffupdater_1._0
{
public partial class Main : Form
{
public Main()
{
InitializeComponent();
}
public void logAdd(string message)
{
this.Log.Items.Add(message); // Doesnt add to textbox
this.Log.Items.Add("This won't update the textbox!!! Why?"); // Doesnt add to textbox
}
private void exitProgramToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void aboutToolStripMenuItem1_Click(object sender, EventArgs e)
{
Form aboutBox = new AboutBox1();
aboutBox.ShowDialog();
}
private void settingsToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void settingsToolStripMenuItem1_Click(object sender, EventArgs e)
{
settingsForm.settings.ShowDialog();
}
private void synchronize_Click(object sender, EventArgs e)
{
this.Log.Items.Add("This WILL update the textbox. It is exactly the same as the other one..."); // This will add to the textbox
DatabaseHandling.createDataSet();
}
}
public class settingsForm
{
public static Form settings = new Settings();
}
}
My Logging Class code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace LCR_ShepherdStaffupdater_1._0
{
public class Logging
{
static Main mainClass = new Main();
static logAdd logAddDelegate;
public static void updateLog(string message)
{
logAddDelegate = mainClass.logAdd;
logAddDelegate(message);
}
}
}
I am just completely stumped....does anyone know how I can fix the logAdd function so I can get my textbox log to finally update?
EDIT:
I finally got it to work, here was the fix:
Form1 Code
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Data.OleDb;
using System.Collections.Specialized;
using System.Text;
delegate void logAdd(string message);
namespace LCR_ShepherdStaffupdater_1._0
{
public partial class Main : Form
{
public Main()
{
InitializeComponent();
}
public void add(string message)
{
this.Log.Items.Add(message);
}
public void logAdd(string message)
{
Log.Invoke(new logAdd(add), new object[] { message });
}
private void exitProgramToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void aboutToolStripMenuItem1_Click(object sender, EventArgs e)
{
Form aboutBox = new AboutBox1();
aboutBox.ShowDialog();
}
private void settingsToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void settingsToolStripMenuItem1_Click(object sender, EventArgs e)
{
settingsForm.settings.ShowDialog();
}
private void synchronize_Click(object sender, EventArgs e)
{
logAdd("this works");
}
}
public class settingsForm
{
public static Form settings = new Settings();
}
}
Logging Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace LCR_ShepherdStaffupdater_1._0
{
public class Logging
{
static Main mainClass = new Main();
static logAdd logAddDelegate;
public static void updateLog(string message)
{
logAddDelegate = mainClass.logAdd;
logAddDelegate(message);
}
}
}
Well...I can tell that is a really bad way to do it...but until I find a true fix as long as it works im happy. Thanks for the help guys!
From the code you posted your static Logger class is creating a new instance of the Main form. which is different than the one your running on the UI.
Overall this isn't a very good design pattern. write a comment if you want me to elaborate and give a sample.
What thread are you calling Logging.updateLog() from? If it's not the UI thread, I could see that the TextBox wouldn't get updated in that case. If you try calling logAdd() from synchronize_Click() (assuming that this is called from the UI thread based on the name), does it work then?
the synchronize_click is run on the instance of the main form that is running. The logadd function is run on a seperate main form that you create in the logging code. For this to work, you need to pass your existing main form into the log code so that it updates the text box you can see, not the extra text box you don't.
I had a problem similar once before, it was solved by calling .Invalidate() on the text box after writing to it.
You could also check your message is actually getting to the textbox with:
debug.WriteLine( this.Log.Items( this.Log.Items.Count-1));
Hope that helps you.