Programming Forums > Application Development > C#

Jewel · Jun 2nd, 2008, 4:42 PM

It was very easy to do in VB.Net but with C# it's alot harder.. Here's some code -->

Got 2 forms. On form1 there's Label 1. And when i press button1 which is in Form2 i want that Form1 Label1 text changes..

VB.Net ( Just a fast code ) =

(Toggle Plain Text)

Button1_Click
            form1.label1.text = Easy
end sub

So.. How to do this on C#

Thanks,
Jewel.

OpenLoop · Jun 2nd, 2008, 6:41 PM

Try:

 c# Syntax (Toggle Plain Text) 
Application.OpenForms["Form1"].Text = "Easy";
Application.OpenForms["Form1"].Text = "Easy";

Jewel · Jun 3rd, 2008, 3:38 AM

That was not exactly what i was looking for..

I want to control the Label1(which is on Form1) from From2.

I tried to google my problem. Found this
It is like my problem. I tried that

(Toggle Plain Text)

   1.
      Form2 form2 = new Form2();
   2.
      fom2.ShowDialog();//enforces user to not back to form1 unless finishing work on form2

And then

(Toggle Plain Text)

string str = form2.textbox2.Text;

Someone can help :o?

OpenLoop · Jun 3rd, 2008, 6:38 AM

Can we see some code? How are you loading form2?

Jewel · Jun 3rd, 2008, 8:07 AM

Something like this

Form1

(Toggle Plain Text)

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 TestProject
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form form2 = new Form2();
            form2.Show();

        }

        private void label1_Click(object sender, EventArgs e)
        {
            
        }
    }
}

Form2

(Toggle Plain Text)

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 TestProject
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void Form2_Load(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            // Yea.. When i press this button Testbox1.Text goes to Label1 which is on Form1
            TestProject.Form1.label1.Text = textBox1.Text;

        }
    }
}

Jewel · Jun 3rd, 2008, 11:05 AM

Here's the Project -->

If the Checkbox is checked in Options menu then Show the PictureBox if not Checked
then do not show.

OpenLoop · Jun 3rd, 2008, 6:05 PM

You can do this in several ways. You can make the checkbox in Option public, then when the option button is clicked, create a new Option forum and do ShowDialog, after it returns check the status of the checkbox and hide/show the image.

Take a look at the attached. I opted for a public boolean flag.

Jewel · Jun 4th, 2008, 9:23 AM

Thanks! modifed it little to fit my code. Problem Solved

BstrucT · Jun 9th, 2008, 6:49 AM

I would just like to add that there is quite a few ways of doing this in C#.
I mean, accessing let's say a text value between forms can be tricky
for the newb out there. So I have included some easy examples for all
the newcomers who might have read this post and need help with the
basics.

Here is 2 easy ways you can try:

Example: You have two forms, form1 and form2.
On form1 create 1 x textbox(textBox1) and 1 x button(button1).
On form2 create 1 x label(label1).

1st Way: Constructors.

in Form2's class code the following constructor...

(Toggle Plain Text)

public Form2(string myStringtextBox)
{
      InitializeComponent();
      label1.Text = myStringtextBox;
}

Okay, now go to Form1's button click event for button1...

(Toggle Plain Text)

private void button1_Click(object sender, System.EventArgs e)
{
     Form2 frm = new Form2( textBox1.Text );
     frm.Show();
}

2nd Way: Properties
Add a property in Form1 to collect value from the text box...

(Toggle Plain Text)

public string _textBox
{
     get{ return textBox1.Text; }
}

Now add a property in Form2 to set the label's text...

(Toggle Plain Text)

public string _textBox
{
     set{ label1.Text = value; }
}

Once you are comfortable with these, you can try to do the same, but with the delegates approach.

Enjoy.
>BstrucT

ghg5 · Jun 9th, 2008, 10:52 AM

I highly suggest using the second method which bstruct listed. The first is ok except you are initializing the second form each time...if you already have a 2nd form there is no need for this. Setting the property blocks like he did in the second set of code is a good way to go.

Jun 2nd, 2008, 4:42 PM	#1
Jewel Programmer Join Date: Feb 2008 Posts: 32 Rep Power: 0	Form1 <- Label <- Form2 It was very easy to do in VB.Net but with C# it's alot harder.. Here's some code --> Got 2 forms. On form1 there's Label 1. And when i press button1 which is in Form2 i want that Form1 Label1 text changes.. VB.Net ( Just a fast code ) = (Toggle Plain Text) Button1_Click form1.label1.text = Easy end sub Button1_Click form1.label1.text = Easy end sub So.. How to do this on C# Thanks, Jewel. __________________ C#

Jun 2nd, 2008, 6:41 PM	#2
OpenLoop Expert Programmer Join Date: May 2005 Location: East Lansing, MI Posts: 663 Rep Power: 4	Re: Form1 <- Label <- Form2 Try: c# Syntax (Toggle Plain Text) Application.OpenForms["Form1"].Text = "Easy"; Application.OpenForms["Form1"].Text = "Easy";

Jun 3rd, 2008, 3:38 AM	#3
Jewel Programmer Join Date: Feb 2008 Posts: 32 Rep Power: 0	Re: Form1 <- Label <- Form2 That was not exactly what i was looking for.. I want to control the Label1(which is on Form1) from From2. I tried to google my problem. Found this It is like my problem. I tried that (Toggle Plain Text) 1. Form2 form2 = new Form2(); 2. fom2.ShowDialog();//enforces user to not back to form1 unless finishing work on form2 1. Form2 form2 = new Form2(); 2. fom2.ShowDialog();//enforces user to not back to form1 unless finishing work on form2 And then (Toggle Plain Text) string str = form2.textbox2.Text; string str = form2.textbox2.Text; Someone can help :o? __________________ C# Last edited by Jewel; Jun 3rd, 2008 at 4:01 AM.

Jun 3rd, 2008, 6:38 AM	#4
OpenLoop Expert Programmer Join Date: May 2005 Location: East Lansing, MI Posts: 663 Rep Power: 4	Re: Form1 <- Label <- Form2 Can we see some code? How are you loading form2?

Jun 3rd, 2008, 8:07 AM	#5
Jewel Programmer Join Date: Feb 2008 Posts: 32 Rep Power: 0	Re: Form1 <- Label <- Form2 Something like this Form1 (Toggle Plain Text) 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 TestProject { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { Form form2 = new Form2(); form2.Show(); } private void label1_Click(object sender, EventArgs e) { } } } 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 TestProject { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { Form form2 = new Form2(); form2.Show(); } private void label1_Click(object sender, EventArgs e) { } } } Form2 (Toggle Plain Text) 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 TestProject { public partial class Form2 : Form { public Form2() { InitializeComponent(); } private void Form2_Load(object sender, EventArgs e) { } private void textBox1_TextChanged(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { // Yea.. When i press this button Testbox1.Text goes to Label1 which is on Form1 TestProject.Form1.label1.Text = textBox1.Text; } } } 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 TestProject { public partial class Form2 : Form { public Form2() { InitializeComponent(); } private void Form2_Load(object sender, EventArgs e) { } private void textBox1_TextChanged(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { // Yea.. When i press this button Testbox1.Text goes to Label1 which is on Form1 TestProject.Form1.label1.Text = textBox1.Text; } } } __________________ C#

Jun 4th, 2008, 9:23 AM	#8
Jewel Programmer Join Date: Feb 2008 Posts: 32 Rep Power: 0	Re: Form1 <- Label <- Form2 Thanks! modifed it little to fit my code. Problem Solved __________________ C#

Jun 9th, 2008, 6:49 AM	#9
BstrucT Hobbyist Programmer Join Date: Dec 2007 Location: Durban, South-Africa Posts: 194 Rep Power: 1	Re: Form1 <- Label <- Form2 I would just like to add that there is quite a few ways of doing this in C#. I mean, accessing let's say a text value between forms can be tricky for the newb out there. So I have included some easy examples for all the newcomers who might have read this post and need help with the basics. Here is 2 easy ways you can try: Example: You have two forms, form1 and form2. On form1 create 1 x textbox(textBox1) and 1 x button(button1). On form2 create 1 x label(label1). 1st Way: Constructors. in Form2's class code the following constructor... (Toggle Plain Text) public Form2(string myStringtextBox) { InitializeComponent(); label1.Text = myStringtextBox; } public Form2(string myStringtextBox) { InitializeComponent(); label1.Text = myStringtextBox; } Okay, now go to Form1's button click event for button1... (Toggle Plain Text) private void button1_Click(object sender, System.EventArgs e) { Form2 frm = new Form2( textBox1.Text ); frm.Show(); } private void button1_Click(object sender, System.EventArgs e) { Form2 frm = new Form2( textBox1.Text ); frm.Show(); } 2nd Way: Properties Add a property in Form1 to collect value from the text box... (Toggle Plain Text) public string _textBox { get{ return textBox1.Text; } } public string _textBox { get{ return textBox1.Text; } } Now add a property in Form2 to set the label's text... (Toggle Plain Text) public string _textBox { set{ label1.Text = value; } } public string _textBox { set{ label1.Text = value; } } Once you are comfortable with these, you can try to do the same, but with the delegates approach. Enjoy. >BstrucT __________________ Be kinder than necessary because everyone you meet is fighting some kind of battle.

Jun 9th, 2008, 10:52 AM	#10
ghg5 Newbie Join Date: Apr 2008 Location: flagstaff az Posts: 18 Rep Power: 0	Re: Form1 <- Label <- Form2 I highly suggest using the second method which bstruct listed. The first is ok except you are initializing the second form each time...if you already have a 2nd form there is no need for this. Setting the property blocks like he did in the second set of code is a good way to go.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Outputting command data to a label?	PaCkEtPiRaTe	Visual Basic	2	Sep 6th, 2007 5:20 PM
how do you put a caption into a label when clicked?	13EN	Visual Basic	2	Jun 8th, 2006 3:26 PM
MVS 2005 Label resizing	Kilo	C#	4	May 28th, 2006 1:08 AM
Problem moving Label value to TextBox	Bman	C#	3	Nov 29th, 2005 6:28 PM
how to move a vb label across the screen and then back again	adudley	Visual Basic	10	Nov 28th, 2005 7:29 PM

Programming Forums > Application Development > C#

Form1 <- Label <- Form2