Develop Reference

c# label to receive information from private method(toolbox value)

I've created a new form, in which I have a toolbox. When I press a button in that form, it should relay that information that has been entered by the user(toolboxbox value) to the main form, in which it should say that piece of information in a label.
Since the method to create that username from the toolbox is private, I cannot access it from any other way. Making it public does not seem to make a difference, neither does get,set (from the way I've been trying to atleast).
Picture that may help explaining it:
Code (in which to create user):
namespace WindowsFormsApplication3
{
public partial class Newuserform : Form
{
public Newuserform()
{
InitializeComponent();
}
private void buttonCreateUser_Click(object sender, EventArgs e)
{
string uname = textboxUsername.ToString();
}
public void Unamecreate()
{
}
}
}
Form1 Code (To receive created user):
namespace WindowsFormsApplication3
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void aboutToolStripMenuItem1_Click(object sender, EventArgs e)
{
Aboutform form2 = new Aboutform();
form2.Show();
}
private void newLocalUserToolStripMenuItem_Click(object sender, EventArgs e)
{
Newuserform formnewuser = new Newuserform();
formnewuser.Show();
}
}
}

you have a lot of options.
One way is to create an event and handle it in the main form.
public partial class Newuserform : Form
{
//the public property
public event EventHandler<string> UnameChanged;
public Newuserform()
{
InitializeComponent();
}
private void buttonCreateUser_Click(object sender, EventArgs e)
{
if (UnameChanged != null)
UnameChanged(textboxUsername.ToString()); //fire the event
}
}
Now, to "handle" the event, do the following in your main form:
private void newLocalUserToolStripMenuItem_Click(object sender, EventArgs e)
{
Newuserform formnewuser = new Newuserform();
formnewuser.UnameChanged += Handler;
formnewuser.Show();
}
private void Handler (object sender, string Uname)
{
// do something wit the new Uname.
}
note: recreating the Newuserform will require to cleanup previous attached resources.

Exchanging/Passing Values between C# forms

I have a problem with my code. Its working fine and there is no error but a logical one i think so. I have used a method PassValue(int id) to get value from another from. I have tested it and the forms are exchanging the values correctly but the problem comes when I use the value which i have received from other form as a "textbox.text" or a "label.text"
Here is my code:
namespace MyProgram
{
public partial class UserProfile : Form
{
public string empidstr;
public UserProfile()
{
InitializeComponent();
}
public void PassValue(int id)
{
string idstring = Convert.ToString(id);
// empidlabel.Text = idstring;
empidstr = idstring;
}
private void button2_Click(object sender, EventArgs e)
{
empidlabel.Text = empidstr;
}
private void UserProfile_Load(object sender, EventArgs e)
{
}
}}

Add item to listview from another form

I've stomped with a problem I've spent some hours trying to solve, with my very limited knowledge.
I have a listview in my form1 called listMachine
And I have a method in form1.cs such as
private void máquinaToolStripMenuItem_Click(object sender, EventArgs e)
{
machinename open = new machinename();
open.Show();
}
machinename.cs is another form, and I use that method to open my other form, with an object called open.
the machinename button is a simple form which just serves as an input receiver, it asks a name, we have to type it into the textbox, press a button and it receives the input.
This is the code that runs when you press the button
public void buttonAceitarnome_Click(object sender, EventArgs e)
{
if (textBoxnomenova.TextLength == 0)
{
toolTipEmptyname.Show("O nome da máquina não pode estar vazio", textBoxnomenova);
}
else
{
Variables.var = textBoxnomenova.Text;
//MessageBox.Show(Variables.var); debug purpose, the messagebox does carry variables.var text
obj.listMachine.Items.Add(Variables.var); //If I change the variables.var to "test" it will NOT add the item.
this.Close();
}
}
Also, I forgot to mention my Variables.cs class, I created it because it was the only way I found to pass variables from a class to another (machinename.cs to form1.cs), but still, the items are not added into the listview.
This is my variables.cs code
public static class Variables
{
public static string var;
}
The comments I added to the code also give you some extra debug info..
I didn't want to ask for online help, but couldn't solve this on my own :(

If I were you, I would first remove the Variables class.
Then, you'r first form/class is called obj.cs, am I right? Or is it form1.cs?
I made it look like this:
public partial class obj : Form
{
public static string text; //This is a variable that can be reached from
public obj()
{
InitializeComponent();
}
private void máquinaToolStripMenuItem_Click(object sender, EventArgs e)
{
machinename open = new machinename();
open.ShowDialog(); //I put ShowDialog instead of Show
addItem(); //This method is called when the showed dialog is closed (machinename.cs)
}
private void addItem()
{
listMachine.Items.Add(text);
}
}
and the machinename.cs class like this:
public partial class machinename : Form
{
public machinename()
{
InitializeComponent();
}
private void buttonAceitarnome_Click(object sender, EventArgs e) //This one can be private
{
if (textBoxnomenova.TextLength == 0)
{
//Something here
}
else
{
obj.text = textBoxnomenova.Text; //Initializing the public static variable
this.Close(); //Closes the form, next step will be to run the method in obj.cs
}
}
}
If I understood your question correctly, you wanted to add an item to the ListView called "listMachine" via a button in the form "machinename.cs". This code will do that. I hope it helps you.

Change the click event from private to protected.
protected void máquinaToolStripMenuItem_Click(object sender, EventArgs e)

Order of form_load method execution

I am creating a winforms application which uses Gmaps.net. I am unable to alter the order in which on Load methods are being called. For some reason the map_load is being called before the man_Load. Is there any way to change the order of this ?
If I can provide any more information to help just ask.
Thanks!
Dan.
public partial class main : Form
{
public main()
{
InitializeComponent();
}
private void main_Load(object sender, EventArgs e)
{
MessageBox.Show("main_load");
}
private void map_Load(object sender, EventArgs e)
{
MessageBox.Show("map_load");
}
}

It seems that you used the WinForms designer to create the map. The code behind is in the InitializeComponent() method and seems that the map is being loaded before the MainForm is loaded.
My recommendation is to create the map, once the MainForm has been loaded:
public partial class main : Form
{
public main()
{
InitializeComponent();
}
private void main_Load(object sender, EventArgs e)
{
Control map = CreateMap();
map.Docking = DockStyle.Fill;
this.Controls.Add(map);
}
private Control CreateMap()
{
// Create a new GMaps.NET object, intialize it and return
}
}
Hope it helps.

How can I make the WebBrowser control navigate to a specific address?

How can I make the code when run the code it go to example.com
private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
webBrowser1.Navigate("www.example.com");
}
Please correct it when run program it go to example.com
private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
webBrowser1.Navigate("www.example.com");
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
if (webBrowser1.Document != null)
{
IHTMLDocument2 document = webBrowser1.Document.DomDocument as IHTMLDocument2;
if (document != null)
{
IHTMLSelectionObject currentSelection = document.selection;
IHTMLTxtRange range = currentSelection.createRange() as IHTMLTxtRange;
if (range != null)
{
const String search = "ant";
if (range.findText(search, search.Length, 2))
{
range.select();
}
}
}
}
}

Can you Navigate to example.com at Form.Load event? It's working fine in my machine.
private void Form1_Load(object sender, EventArgs e)
{
webBrowser1.Navigate("www.example.com");
}

You need to handle the Load event of your form (Form1) if you want the WebBrowser control to automatically navigate to www.example.com whenever your form is shown on the screen.
As it's written now, you handle the Navigated event of the WebBrowser control and tell it to navigate somewhere else. However, the Navigated event is only raised when the browser has navigated to and begun loading a new page. Even if you get your code to work, it will be perpetually chasing its own tail.
Instead, try the following:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
webBrowser1.Navigate("http://www.example.com");
}
}

public Form1()
{
InitializeComponent();
webBrowser1.Navigate("http://www.example.com");
}
This execute the navigate method after the app is initialized.

I'm not sure if I understand your question: The e variable in the webBrowser1_DocumentCompleted method contains the Url property that holds the current Uri object with the URL where the browser control has arrived:
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser browser = (WebBrowser)sender;
if (e.Url.Host.EndsWith("example.com"))
{
// do something
}
}