Question about code in C#

Question

3.00/5 (1 vote)

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I have 2 forms

the first includes on his page a panel (Size = 400X400)
and a button that opens the second form
that includes 2 textbox and a button

the user need to enter Width and Height and then press the button

I want that the size entered by the user will change the panel on the first (main) form without creating another object of form1 (Main) ?

form 1 - Main - Panel + Button<br />
form 2 - .... - 2 textboxs + button<br />
<br />
form 1 (Main) - code --> <br />

C#

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private int X2, Y2;
        public Form5(int W2, int H2)
        {
            X2 = W2;
            Y2 = H2;
            InitializeComponent();
            panel1.Size = new Size(X2, Y2);
        }

        private void Enter(object sender, EventArgs e) /->Button Event<-\
        {
            Form6 form2 = new Form2();
            form2.Show();
        }
    }
}

form2 - code ->

C#

using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form6 : Form
    {
        public Form6()
        {
            InitializeComponent();
        }

        private void BtnClick(object sender, EventArgs e) /->Button Event<-\
        {
            int W2 = int.Parse(textBox1.Text);
            int H2 = int.Parse(textBox2.Text);
            Form5 form5 = new Form5(W2, H2);
            form5.Show();
        }
    }
}

Please Help ???

Posted 28-Oct-11 7:21am

Eddie1987

Updated 28-Oct-11 7:30am

André Kraak

v3

Add a Solution

2 solutions

Solution 2

You can inject another object to hold onto the references.

C#

public class PanelSize
{
   public int Width {get; set;}
   public int Height {get; set;}
}

Here we have a holder for it in the Form that is receiving inputs.

C#

public PanelSize Dimensions {get; set;}

Which changes the click event to be this:

C#

private void BtnClick(object sender, EventArgs e) /->Button Event<-\
{
    Dimensions.Width = int.Parse(textBox1.Text);
    Dimensions.Height = int.Parse(textBox2.Text);
}

Then rather than doing a Show() you can do a ShowDialog. Then after the ShowDialog() runs you can capture the value and set it. If you require a Show() to work you will need to do some event triggering or actual binding.

Here is how you would do with ShowDialog

C#

public PanelDimensions Dimensions {get; private set;}

private void Enter(object sender, EventArgs e)
{
   //Set up the PanelDimensions object that is to be injected
    Dimensions = new PanelDimensions();
    Form6 form2 = new Form2();
    form2.Dimensions = Dimensions; //This means both are now sharing this object and it is a class so it is by reference, i.e. same data
form
    form2.ShowDialog();
    
    panel1.Width = Dimensions.Width;
    panel1.Height = Dimensions.Height;
}

Posted 28-Oct-11 7:37am

N_tro_P

Updated 28-Oct-11 7:40am

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Tim Groven · Accepted Answer · 2011-10-28T07:34:00

Form2 with the textboes:

C#

namespace WindowsFormsApplication1
{
    public partial class Form6 : Form
    {
        private int panelWidth;
        private int panelHeight;

        public int PanelWidth
        {
            return panelWidth;
        }

        public int PanelHeight
        {
            return panelHeight;
        }


        public Form6()
        {
            InitializeComponent();
        }

        private void BtnClick(object sender, EventArgs e)
        {
            panelWidth = int.Parse(textBox1.Text);
            panelHeight = int.Parse(textBox2.Text);

            Close();
        }
    }
}

Form 1 with the panel:

C#

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form5()
        {
            InitializeComponent();
        }

        private void Enter(object sender, EventArgs e) /->Button Event<-\
        {
            Form6 form2 = new Form2();
            form2.ShowDialog();

            panel1.Size = new Size(form2.PanelWidth, form2.PanelHeight);
        }
    }
}