Working on my original databindings issue (see : DataBindings.Add(); Thread #1087341 Message #1087341) I found another issue that I didn't expect. This issue is easier to show code for. Below is all the code needed to test this. Just create a new windows app (call it WindowsApplication14 like I did if you will<s>) and paste all the following code into Form1:

The run the app. If you change the checkbox and click the button the checkbox will revert back. If you change the 2nd numeric updown control and click the button the value wil change back. If you change the 1st numberic updown control and click the button the value will be retained.
The reason for all this is the order the databindings were added in the form's load.

Not what I expected. How can I get around this? I haven't tested this in 2.0 yet but hopefully will tonight. Any thoughts on the subject would be appreciated.

Thanks,
Einar

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace WindowsApplication14
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private WindowsApplication14.UserControl1 userControl11;
		private System.ComponentModel.Container components = null;
		private System.Windows.Forms.Button button1;

		private Class1 class1 = new Class1();

		public Form1()
		{
			InitializeComponent();
		}

		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.userControl11 = new WindowsApplication14.UserControl1();
			this.button1 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// userControl11
			// 
			this.userControl11.Location = new System.Drawing.Point(24, 24);
			this.userControl11.N1 = new System.Decimal(new int[] {
																														 0,
																														 0,
																														 0,
																														 0});
			this.userControl11.N2 = new System.Decimal(new int[] {
																														 0,
																														 0,
																														 0,
																														 0});
			this.userControl11.Name = "userControl11";
			this.userControl11.Size = new System.Drawing.Size(152, 144);
			this.userControl11.TabIndex = 0;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(56, 184);
			this.button1.Name = "button1";
			this.button1.TabIndex = 1;
			this.button1.Text = "Display";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(272, 230);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.userControl11);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}
		#endregion

		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		
		private void Form1_Load(object sender, System.EventArgs e)
		{
			this.userControl11.DataBindings.Clear();
			this.userControl11.DataBindings.Add("N1", this.class1, "N1");
			this.userControl11.DataBindings.Add("N2", this.class1, "N2");
			this.userControl11.DataBindings.Add("C1", this.class1, "C1");
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			MessageBox.Show("N1:"+this.class1.N1.ToString() + Environment.NewLine + "N2:"+this.class1.N2.ToString() + Environment.NewLine+ "C1:"+this.class1.C1.ToString());
		}	
	}


	public class UserControl1 : System.Windows.Forms.UserControl
	{
		private System.Windows.Forms.NumericUpDown numericUpDown1;
		private System.Windows.Forms.NumericUpDown numericUpDown2;
		private System.Windows.Forms.CheckBox checkBox1;
		private System.ComponentModel.Container components = null;

		public decimal N1
		{
			get{return this.numericUpDown1.Value;}
			set{this.numericUpDown1.Value = value;}
		}

		public decimal N2
		{
			get{return this.numericUpDown2.Value;}
			set{this.numericUpDown2.Value = value;}
		}

		public bool C1
		{
			get{return this.checkBox1.Checked;}
			set{this.checkBox1.Checked = value;}
		}

		public UserControl1()
		{
			InitializeComponent();
		}

		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Component Designer generated code
		/// <summary> 
		/// Required method for Designer support - do not modify 
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.numericUpDown1 = new System.Windows.Forms.NumericUpDown();
			this.numericUpDown2 = new System.Windows.Forms.NumericUpDown();
			this.checkBox1 = new System.Windows.Forms.CheckBox();
			((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).BeginInit();
			this.SuspendLayout();
			// 
			// numericUpDown1
			// 
			this.numericUpDown1.Location = new System.Drawing.Point(40, 32);
			this.numericUpDown1.Name = "numericUpDown1";
			this.numericUpDown1.Size = new System.Drawing.Size(56, 20);
			this.numericUpDown1.TabIndex = 0;
			// 
			// numericUpDown2
			// 
			this.numericUpDown2.Location = new System.Drawing.Point(40, 72);
			this.numericUpDown2.Name = "numericUpDown2";
			this.numericUpDown2.Size = new System.Drawing.Size(56, 20);
			this.numericUpDown2.TabIndex = 1;
			// 
			// checkBox1
			// 
			this.checkBox1.Location = new System.Drawing.Point(8, 8);
			this.checkBox1.Name = "checkBox1";
			this.checkBox1.TabIndex = 2;
			this.checkBox1.Text = "checkBox1";
			// 
			// UserControl1
			// 
			this.Controls.Add(this.checkBox1);
			this.Controls.Add(this.numericUpDown2);
			this.Controls.Add(this.numericUpDown1);
			this.Name = "UserControl1";
			this.Size = new System.Drawing.Size(152, 144);
			((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion
	}


	public class Class1
	{
		private decimal n1 = 1;
		public decimal N1
		{
			get{return this.n1;}
			set{this.n1 = value;}
		}
		private decimal n2 = 2;
		public decimal N2
		{
			get{return this.n2;}
			set{this.n2 = value;}
		}

		private bool c1 = true;
		public bool C1
		{
			get{return this.c1;}
			set{this.c1 = value;}
		}
	}


}