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

namespace System.Windows.Forms
{
    public partial class NumericBox : UserControl
    {
        public NumericBox()
        {
            InitializeComponent();
            this.Value = 0;
            this.ReadOnly = false;
        }

        private object _Value;
        public virtual object Value
        {
            get { return _Value; }
            set { _Value = value; this.Text = value.ToString(); }
        }

        private bool _ReadOnly;
        public virtual bool ReadOnly
        {
            get { return _ReadOnly; }
            set { _ReadOnly = value; if (_ReadOnly) { txtValueBox.Enabled = false; } else { txtValueBox.Enabled = true; } }
        }
        public override string Text
        {
            get { return txtValueBox.Text; }
            set { txtValueBox.Text = value; }
        }

        private void btnCopy_Click(object sender, EventArgs e) { Clipboard.SetData(DataFormats.Text, this.Text); }
        private void btnPaste_Click(object sender, EventArgs e) { if (this.ReadOnly) return; this.Text = (string)Clipboard.GetData(DataFormats.Text); }
    }

    #region NumericBox Extensions
    public static class NumericBoxExtensions
    {
        public static byte ToByte(this NumericBox val)
        {
            try
            {
                return Convert.ToByte(val.Value);
            }
            catch { return 0; }
        }
        public static sbyte ToSByte(this NumericBox val)
        {
            try
            {
                return Convert.ToSByte(val.Value);
            }
            catch { return 0; }
        }
        public static Int16 ToInt16(this NumericBox val)
        {
            try
            {
                return Convert.ToInt16(val.Value);
            }
            catch { return 0; }
        }
        public static Int32 ToInt32(this NumericBox val)
        {
            try
            {
                return Convert.ToInt32(val.Value);
            }
            catch { return 0; }
        }
        public static Int64 ToInt64(this NumericBox val)
        {
            try
            {
                return Convert.ToInt64(val.Value);
            }
            catch { return 0; }
        }
        public static UInt16 ToUInt16(this NumericBox val)
        {
            try
            {
                return Convert.ToUInt16(val.Value);
            }
            catch { return 0; }
        }
        public static UInt32 ToUInt32(this NumericBox val)
        {
            try
            {
                return Convert.ToUInt32(val.Value);
            }
            catch { return 0; }
        }
        public static UInt64 ToUInt64(this NumericBox val)
        {
            try
            {
                return Convert.ToUInt64(val.Value);
            }
            catch { return 0; }
        }
        public static Single ToSingle(this NumericBox val)
        {
            try
            {
                return Convert.ToSingle(val.Value);
            }
            catch { return 0; }
        }
        public static double ToDouble(this NumericBox val)
        {
            try
            {
                return Convert.ToDouble(val.Value);
            }
            catch { return 0; }
        }
        public static decimal ToDecimal(this NumericBox val)
        {
            try
            {
                return Convert.ToDecimal(val.Value);
            }
            catch { return 0; }
        }
        public static string ToString(this NumericBox val)
        {
            try
            {
                return Convert.ToString(val.Value);
            }
            catch { return "0"; }
        }
    }
    #endregion
}