My objective is to be able to enter a value in the textbox in form1 then press enter (when pressing the enter button the value will be pass to a method called setvalue. When the switch button is pressed then the form one will hide and open form2. Form2 has two buttons, show and exit. When show is clicked i need to display a messagebox that display the data in textbox in form1 by calling the getvalue method.
Please I'm open for ideas.
This is form one
public partial class Form1 : Form
{
private int secretValue;
public void SetValue (int value){
secretValue = value;
}
public int GetValue ()
{
return secretValue;
}
public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2();
frm2.Visible = true;
this.Hide();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void btnEnter_Click(object sender, EventArgs e)
{
secretValue = Convert.ToInt32(txtInput.Text);
SetValue(secretValue);
}
}
this form two
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void btnExit_Click(object sender, EventArgs e)
{
Environment.Exit(0);
}
private void btnShow_Click(object sender, EventArgs e)
{
Form1 frm1 = new Form1();
int val = frm1.GetValue();
MessageBox.Show(string.Format(val.ToString(), "My Application", MessageBoxButtons.OK));
}
}
Add a constructor value on your form 2. It should look like this:
public Form2(int secValue)
Then you can call it on your form 1 by passing the value
Form2 frm2 = new Form2(secretValue);
Maybe you can assign it to a global variable in your form 2, so that it can be referenced by your code in all of the form. Your form two can now be:
public partial class Form2 : Form
{
int passedValue = 0;
public Form2(int secValue)
{
InitializeComponent();
passedValue = secValue;
}
private void btnExit_Click(object sender, EventArgs e)
{
Environment.Exit(0);
}
private void btnShow_Click(object sender, EventArgs e)
{
MessageBox.Show(string.Format(passedValue.ToString(), "My Application", MessageBoxButtons.OK));
}
}
In my opinion, there's no need for the property you created. Always remember, the values you assign to a class will be null if you change from form to form.
Following code will not work becuase you are creating new instance of form1 and trying to get the value from there, It will only have the default vaue of int.
private void btnShow_Click(object sender, EventArgs e)
{
Form1 frm1 = new Form1();
int val = frm1.GetValue();
}
Simply what you can do is to have a public property defined within Form2. and set the value of this property before showing Form2,
private void button2_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2();
//settting the value to Form2's property SecrectValueOfForm2, Now this value is available within Form2
frm2.SecrectValueOfForm2 = ValueInForm1;
frm2.Visible = true;
this.Hide();
}
Plz try code as shown below:
public partial class Form1 : Form
{
private int secretValue;
Form2 frm2 = new Form2();
public void SetValue (int value){
secretValue = value;
}
public int GetValue ()
{
return secretValue;
}
public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
frm2 .Show();
this.Hide();
}
private void Form1_Load(object sender, EventArgs e)
{
frm2.Owner = this;
}
private void btnEnter_Click(object sender, EventArgs e)
{
secretValue = Convert.ToInt32(txtInput.Text);
SetValue(secretValue);
}
}
And On Form2:
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void btnExit_Click(object sender, EventArgs e)
{
Environment.Exit(0);
}
private void btnShow_Click(object sender, EventArgs e)
{
Form1 frm1 = new Form1();
int val = ((Form1 )this.Owner).GetValue();
MessageBox.Show(string.Format(val.ToString(), "My Application", MessageBoxButtons.OK));
}
}
Form2
public Int32 _txtval { get; set; }
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(_txtval.ToString());
}
Form1
private void button1_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2();
frm2._txtval = Convert.ToInt32(textBox1.Text);
frm2.Visible = true;
this.Hide();
}
Related
I can't update the first form of my application. when it opens it loads all the elements, then through a button I open a second form and from that, with a button I should reload all the controls of the first form including form1.text but this does not happen. despite the marker I saw that the text variable is updated correctly, however on a graphic level it does not change.
form1:
public partial class Form1 : Form
{
public string mail { get; private set; }
public Form1()
{
InitializeComponent();
}
public void Form1_Load(object sender, EventArgs e)
{
this.Text = "table - Last Update: " + DateTime.Now.ToString();
...some other code...
}
public void updateform()
{
this.Controls.Clear();
InitializeComponent();
Form1_Load(null, null);
this.Refresh();
}
private void button1_Click(object sender, EventArgs e)
{
mail = lbl1.Text;
Form2 form2 = new Form2(mail);
form2.Show();
}
}
form2:
public partial class Form2 : Form
{
public Form2(String stringa)
{
InitializeComponent();
email = stringa;
}
private void button1_Click(object sender, EventArgs e)
{
Form1 f1 = new Form1();
f1.updateform();
this.Close();
}
You can pass a reference to Form1, into Form2 using the Show() command. The reference can be accessed using the .Owner property.
In Form1:
private void button1_Click(object sender, EventArgs e)
{
mail = lbl1.Text;
Form2 form2 = new Form2(mail);
form2.Show(this); // <-- pass reference to Form1
}
In Form2:
private void button1_Click(object sender, EventArgs e)
{
Form1 f1 = this.Owner as Form1; // <-- attempt to convert .Owner to Form1
if (f1 != null)
{
f1.updateform();
}
this.Close();
}
want to make form1 pubId value changed from form2. pubId is always get null didn't change. How can I solve this problem?
Form1 code:
public string pubId = string.Empty;
public void button1_Click(object sender, EventArgs e)
{
try
{
form2 _frm2 = new form2();
_frm2 .FormClosed += _frm2_FormClosed;
}
catch (Exception ex)
{
MessageBox.show(ex);
}
}
private void _frm2_FormClosed(object sender, FormClosedEventArgs e)
{
if (pubId == "8")
{
MessageBox.show("works");
}
}
Form2 code:
public void buttonsend_Click(object sender, EventArgs e)
{
idfrm2 = "8";
form1 _frm1 = new form1 ();
_frm1.pubId = _idfrm2;
this.Close();
}
In this line you create a new form with new empty pubId.
form1 _frm1 = new form1 ();
Just create a constructor for form2 to pass it.
For example:
private string _pubId;
public form2(string pubId)
{
_pubId = pubId;
}
Then you can use it:
form2 _frm2 = new form2(pubId);
You can maintain reference to Form2 inside a List of controls maintained by Form1 and access it as below :
Form1 Code :
public partial class Form1 : Form
{
Form2 localfrm2;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2();
frm2.FormClosed += Frm2_FormClosed;
localfrm2 = frm2;
frm2.Show();
}
private void Frm2_FormClosed(object sender, FormClosedEventArgs e)
{
MessageBox.Show(localfrm2.PubId);
}
}
Form 2 :
public partial class Form2 : Form
{
public string PubId { get; set; }
public Form2()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
PubId = textBox1.Text;
}
}
Upvote if this solves your problem
I have a C# project that has 2 forms. The first has 3 buttons. I need to be able from the second form to hide 2 (button1 and button2 )buttons with a checkbox, and I don't know how to call the buttons from the first form.
this is form1
namespace test1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button3_Click(object sender, EventArgs e)
{
Form2 frm = new Form2();
frm.Show();
}
private void button1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
}
}
}
and this is Form2
namespace test1
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void Form2_Load(object sender, EventArgs e)
{
checkBox1.Checked = Properties.Settings.Default.checkB;
if (checkBox1.CheckState == CheckState.Checked)
{
?????????
}
}
private void Form2_FormClosing(object sender, FormClosingEventArgs e)
{
Properties.Settings.Default.checkB = checkBox1.Checked;
Properties.Settings.Default.Save();
}
}
}
Another option is to pass the form as the "owner" in the Show() command:
private void button3_Click(object sender, EventArgs e)
{
Form2 frm = new Form2();
frm.Show(this); // pass Form1 reference in to our instance of Form2
}
In Form2, cast the Owner property back to Form1 so you can access it (assuming you've changed the modifiers property of the buttons to public as already suggested):
private void Form2_Load(object sender, EventArgs e)
{
checkBox1.Checked = Properties.Settings.Default.checkB;
if (checkBox1.CheckState == CheckState.Checked)
{
Form1 f1 = (Form1)this.Owner;
f1.button1.Visible = false; // or whatever your buttons are called
}
}
This is almost exactly what I had posted previously...you need to change the Modifiers property of the buttons so they are public and can be seen from Form2.
this is the final version that works in my case thanks to those who answered my question and helped me to get this answer
Form1
namespace test1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Form2 frm = new Form2();
frm.checkBox1.Checked = Properties.Settings.Default.checkB;
if (frm.checkBox1.CheckState == CheckState.Checked)
{
button1.Visible = false;
}
}
private void button3_Click(object sender, EventArgs e)
{
Form2 frm = new Form2();
frm.Show(this);
}
private void button1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
}
}
}
Form2
namespace test1
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void Form2_Load(object sender, EventArgs e)
{
checkBox1.Checked = Properties.Settings.Default.checkB;
if (checkBox1.CheckState == CheckState.Checked)
{
Form1 f1 = (Form1)this.Owner;
f1.button1.Visible = false;
}
}
private void Form2_FormClosing(object sender, FormClosingEventArgs e)
{
Properties.Settings.Default.checkB = checkBox1.Checked;
Properties.Settings.Default.Save();
}
}
}
The buttons and checkBox are set to Modifiers - Public
you need to make the buttons on the first form public and then you can access them once you create a instance of the first form you will need to pass that form to the second form.
Might want to look into building an event that fires from one form and gets handled by the other form to disable the button.
I'm programming a windows application (C#) that can only have 3 forms open.
When I click on the button of form1, form2 will open but it only open once.
I don't know why this is happening.
Can you please help me?
Thanks!
This is my code of form1:
public partial class Form1 : Form
{
bool form2Opend = false;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (!form2Opend)
{
Form2 f2 = new Form2(this);
f2.Show();
form2Opend = true;
string data = this.textBox1.Text;
f2.TextInTextBox(data);
}
}
public void TextInTextBox(string text)
{
this.textBox1.Text = tekst;
}
public void putStatusToOff()
{
this.form2Opend = false;
}
}
And here is my code from form2
public partial class Form2 : Form
{
private Form1 f1;
public Form2(Form1 giveToForm)
{
f1 = giveToForm;
InitializeComponent();
}
public void TextInTextBox(string tekst)
{
this.textBox1.Text = text;
}
private void button1_Click(object sender, EventArgs e)
{
string dataFromForm2 = this.textBox1.Text;
f1.TextInTextBox(dataFromForm2);
f1.putStatusToOff();
this.Close();
}
}
In your button1_Click method you check a status variable form2Opend and only open the form if this variable is set to false. If you want multiple instances of Form2 you have to remove that check:
private void button1_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2(this);
f2.Show();
string data = this.textBox1.Text;
f2.TextInTextBox(data);
}
i already worked on connecting a tool control to another1 using this code:
--- Form1.cs
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Form2 frm = new Form2(this);
frm.Show();
}
public string LabelText
{
get { return Lbl.Text; }
set { Lbl.Text = value; }
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
--- Form2.cs
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private Form1 mainForm = null;
public Form2(Form callingForm)
{
mainForm = callingForm as Form1;
InitializeComponent();
}
private void Form2_Load(object sender, EventArgs e)
{
}
private void timer1_Tick(object sender, EventArgs e)
{
this.mainForm.LabelText = txtMessage.Text;
if (timer1.Enabled == true)
{
int line = 1 + richTextBox1.GetLineFromCharIndex(richTextBox1.GetFirstCharIndexOfCurrentLine());
int column = 1 + richTextBox1.SelectionStart - richTextBox1.GetFirstCharIndexOfCurrentLine();
txtMessage.Text = "line: " + line.ToString() + " , column: " + column.ToString();
}
}
}
***** output was**
text of label from Form2 was connected into Form1 .
so its already fixed .
now my problem was is there a way i can do the same way for void function?
i mean for example:
in Form1, i got 1button with a control inside of:
richTextBox1.Copy();
then this control will be for richTextBox1 on Form2 .
(which will copy the selected text in richtextbox on Form2)
is that possible? really need a help .thanks a lot in advance!
Here's something to get you started:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Form2 frm2 = new Form2(this);
}
}
And make sure that richTextBox1 is declared public.
And:
public partial class Form2 : Form
{
Form1 sendingForm;
public Form2(Form1 frm1)
{
InitializeComponent();
sendingForm = frm1;
}
private void button1_Click(object sender, EventArgs e)
{
Text = sendingForm.richTextBox1.Text;
}
}
What's done here is: Initializing the Form2 instance with a reference to the sender Form1 instance, and using that reference to get to the RichTextBox.
EDIT:
Maybe (!) this is what you're looking for:
mainForm.richTextBox1.Copy();
You'd move your declaration of Form2 out to Class level:
--Form1
Form2 frm = null;
private void button1_Click(object sender, EventArgs e)
{
frm = new Form2(this);
frm.Show();
}
private void button2_Click(object sender, EventArgs e)
{
if (frm != null)
{
frm.CopyRichTextBox();
}
}
--Form2
public void CopyRichTextBox()
{
this.richTextBox1.Copy();
}