I was going to suggest something similar but then Marc said he wanted to encapsulate the behaviour in the form itself...

>Hi Marc, what about something like this ? ( I
>
>

>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 Test
>{
>    public class Form1 : Form
>    {
>        public Form1()
>        {
>            InitializeComponent();
>        }
>
>    private void InitializeComponent()
>        {
>            this.button1 = new System.Windows.Forms.Button();
>            this.SuspendLayout();
>            // 
>            // button1
>            // 
>            this.button1.Location = new System.Drawing.Point(89, 146);
>            this.button1.Name = "button1";
>            this.button1.Size = new System.Drawing.Size(115, 23);
>            this.button1.TabIndex = 0;
>            this.button1.Text = "Create New Form";
>            this.button1.UseVisualStyleBackColor = true;
>            this.button1.Click += new System.EventHandler(this.button1_Click);
>            // 
>            // Form1
>            // 
>            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
>            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
>            this.ClientSize = new System.Drawing.Size(292, 273);
>            this.Controls.Add(this.button1);
>            this.Name = "Form1";
>            this.Text = "Form1";
>            this.ResumeLayout(false);
>
>        }
>
>        #endregion
>
>        private System.Windows.Forms.Button button1;
>
>        private void button1_Click(object sender, EventArgs e)
>        {
>            MyForm frm = new MyForm();
>            
>            if (frm.CanShowForm())
>                frm.Show();
>            else
>                frm.Close();
>
>        }
>    }
>
>    public class MyForm : Form
>    {
>        public bool CanShowForm()
>        {
>            if (0 == 1) // obviously replace this with real test 
>                return true;
>            
>
>
>                return false;
>
>        }
>    }
>}
>