Creating New Objects DLL Need Help

**SeptFicelle** · 05-16-2011

I'm creating a DLL that will create 4 objects and place them on a form using custom made methods. The logic I've put into this should work, but it's not. I don't understand why. In a blank DLL I need a method called Create(int x, int y) that will assign the location for all 4 objects. The objects are arranged in a 4 square style pattern so simple location math is required. My problem is creating the objects and placing them on the form in the user's project. My pseudo code is:

[code]// Had to add most of these manually.
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 ClassLibraryExample
{
public class Class1
{
private int x;
private int y;

public void Create(int x, int y)
{
object1.Location = new Point(x, y);
object2.Location = new Point(x + 10 + object.Width, y);
object3.Location = new Point(x + 10 + object.Width, y + 10 + object.Height);
object4.Location = new Point(x, y + 10 + object.Height);
}
}
}[code]

The idea is to make all 4 objects into a single object. Implementation into a forms application would be like:

Code:

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;
using ClassLibraryExample;

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

        private void Form1_Load(object sender, EventArgs e)
        {
            Class1.Create(50, 50);
        }
    }
}

That's pretty much all I have to go on. C# and .NET are easy to convert back and forth (except for a few minor classes and methods). Much thanks to whoever helps.

**B1ackAnge1** · 05-17-2011

I'm assuming you're not posting half your code or something?
Object 1-4 are never initialized in the code you post.
Also if you want to add controls to a form, you add them to the Controls collection ON the form

Code:

//someX,someY,someWidth & someHeight have  values set somewhere

public void AddButtonToForm(Form someForm)
{
      Button b = new Button();
      b.Text = "Do Something";
      b.Location = new Point(someX,someY); 
      b.Size = new Size(someWidth,someHeight);
      b.Click += new System.EventHandler(this.someButton_Click); 
      
      someForm.Controls.Add(b);
}

private void someButton_Click(object sender, EventArgs e)
{
     //Do Something here
}

Of course if you want to do it 'properly' you'd also suspend the layout on the form before adding the button and resume it afterwards

**SeptFicelle** · 05-17-2011

THANK YOUUUUUUUUUUUUUUUUUUUUU It was form.Controls.Add(controlName); WOOOOOO Thank you so much... Here is the result.

// DLL Code

Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Windows.Forms;
using System.Drawing;

namespace agUltimate2011
{
    public class agNet
    {
        
    }

    public class agSpecial
    {
        public void Windmill(Form formToAddWindmillTo, int x, int y)
        {
            Button button1 = new System.Windows.Forms.Button();
            Button button2 = new System.Windows.Forms.Button();
            Button button3 = new System.Windows.Forms.Button();
            Button button4 = new System.Windows.Forms.Button();

            button1.Location = new System.Drawing.Point(x, y);
            button1.Name = "windmill1";
            button1.Size = new System.Drawing.Size(75, 23);
            button1.TabIndex = 0;
            button1.Text = "Create New";
            button1.UseVisualStyleBackColor = true;
            button1.Click += new System.EventHandler(click1);

            button2.Location = new System.Drawing.Point(x + 10 + button2.Width, y);
            button2.Name = "windmill2";
            button2.Size = new System.Drawing.Size(75, 23);
            button2.TabIndex = 0;
            button2.Text = "Create New";
            button2.UseVisualStyleBackColor = true;
            button2.Click += new System.EventHandler(click2);

            button3.Location = new System.Drawing.Point(x + 10 + button2.Width, y + 10 + button2.Height);
            button3.Name = "windmill3";
            button3.Size = new System.Drawing.Size(75, 23);
            button3.TabIndex = 0;
            button3.Text = "Create New";
            button3.UseVisualStyleBackColor = true;
            button3.Click += new System.EventHandler(click3);

            button4.Location = new System.Drawing.Point(x, y + 10 + button1.Height);
            button4.Name = "windmill4";
            button4.Size = new System.Drawing.Size(75, 23);
            button4.TabIndex = 0;
            button4.Text = "Create New";
            button4.UseVisualStyleBackColor = true;
            button4.Click += new System.EventHandler(click4);

            formToAddWindmillTo.Controls.Add(button1);
            formToAddWindmillTo.Controls.Add(button2);
            formToAddWindmillTo.Controls.Add(button3);
            formToAddWindmillTo.Controls.Add(button4);
        }

        private void click1(object sender, EventArgs e)
        {
            MessageBox.Show("You clicked Button 1");
        }

        private void click2(object sender, EventArgs e)
        {
            MessageBox.Show("You clicked Button 2");
        }

        private void click3(object sender, EventArgs e)
        {
            MessageBox.Show("You clicked Button 3");
        }

        private void click4(object sender, EventArgs e)
        {
            MessageBox.Show("You clicked Button 4");
        }
    }
}

// Form code

Code:

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;
using agUltimate2011;

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

        private void button1_Click(object sender, EventArgs e)
        {
            agSpecial agSpecial = new agSpecial();
            agSpecial.Windmill(this, 20, 20);
        }
    }
}

WOOOOOOOOOOOOOOO Thank you so much!!!!!