private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
 {
     if ("1234567890".IndexOf(e.KeyChar) == -1 && e.KeyChar != '\b')
     {
         e.Handled = true;
     }
 }

 private void tbConfirmPw_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == (char)Keys.Enter)
     {
         btnChangePw_Click(sender, e);
     }
 }

 private void playerTwo_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar.ToString() == "\r")
     {
         playButton.PerformClick();
     }
 }

 private void Contrasena_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == (char)13)
     {
         this.IngresarButton_Click(null, null);
     }
 }

 private void txt_rut_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == Convert.ToChar(Keys.Enter))
     {
         RutVerificar();
     }
 }

        protected override void OnKeyPress(KeyPressEventArgs e)
        {
            Keys keyPressed = (Keys)e.KeyChar;

            if (_keys.Contains(keyPressed))
            {
                e.Handled = false;
            }
            else
            {
                bool handleAlphabets = true;
                bool handleNumberic = true;
                int ascii = (int)e.KeyChar;

                if (_specialChars != null && (_specialChars.Contains(e.KeyChar)))
                    e.Handled = false;
                else
                {
                    handleAlphabets = (ascii >= 65 && ascii <= 90 || ascii >= 97 && ascii <= 122 || ascii == 32);
                    handleNumberic = ascii >= 48 && ascii <= 57;

                    e.Handled = (handleNumberic && _allowNumeric) || (handleAlphabets && _allowAlphabets);
                    e.Handled = !e.Handled;
                }
            }

            if (e.Handled && BeepOnError)
                new SoundPlayer().Play();

            base.OnKeyPress(e);
        }

 private void PriceText_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && (e.KeyChar != '.'))
     {
         e.Handled = true;
     }
 }

 void tbxServerPort_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar))
     {
         e.Handled = true;
     }
 }

 private void FormOverService_KeyPress(object sender, KeyPressEventArgs e)
 {
     if(e.KeyChar == 13)//enter
         this.button1.PerformClick();
     else if(e.KeyChar == 27)//esc
         this.button2.PerformClick();
 }

        private void DataList1_DblClick(System.Object eventSender, KeyPressEventArgs eventArgs)
        {
            // ERROR: Not supported in C#: OnErrorStatement

            if (string.IsNullOrEmpty(DataList1.BoundText))
                return;
            int lID = 0;
            lID = Convert.ToInt32(DataList1.BoundText);
            switch (gSection) {
                case -1:
                    gID = Convert.ToInt32(DataList1.BoundText);
                    this.Close();
                    break;
                case 0:
                    My.MyProject.Forms.frmStockItem.loadItem(ref Convert.ToInt32(DataList1.BoundText));
                    frmStockItem formItem = null;
                    formItem.Show();
                    break;
                case 1:
                    My.MyProject.Forms.frmStockPricing.loadItem(ref Convert.ToInt32(DataList1.BoundText));
                    frmStockPricing formPrice = null;
                    formPrice.Show();
                    break;
                case 2:
                    modApplication.report_StockQuantity(ref Convert.ToInt32(DataList1.BoundText));
                    break;
            }
            gRS.Requery();
            //UPGRADE_NOTE: Refresh was upgraded to CtlRefresh. Click for more: 'ms-help://MS.VSCC.v90/dv_commoner/local/redirect.htm?keyword="A9E4979A-37FA-4718-9994-97DD76ED70A7"'
            DataList1.CtlRefresh();
        }

 private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (!((e.KeyChar >= '0' && e.KeyChar <= '9') || e.KeyChar == 8 || e.KeyChar == 13))
     {
         e.Handled = true;
     }
 }

 private void listBox1_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == (char)Keys.Escape)
     {
         this.Close();
     }
 }

 //=====================================================================
 /// <summary>
 /// Only allow digits to be entered and backspace to be pressed.
 /// </summary>
 /// <param name="e">The event arguments</param>
 protected override void OnKeyPress(KeyPressEventArgs e)
 {
     if((e.KeyChar >= '0' && e.KeyChar <= '9') || e.KeyChar == '\b')
         base.OnKeyPress(e);
     else
         e.Handled = true;
 }

 private void PowerForm_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == (char)0x1B)
     {
         CloseAndApply();
     }
 }

 private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == 13)
     {
         this.button1_Click(sender, e);
     }
 }

		// este evento resolve a maioria dos problemas com a introdução 
		// de valores inválidos nas datas, no entanto, ficam por tratar 
		// outros modos de introdução dos dados (por exemplo fazendo "paste").
		// embora geralmente não seja um problema pode se-lo nos casos em
		// que se torne necessário forçar um endedit.
		public void data_KeyPress(object sender, KeyPressEventArgs e)
		{
			if (! (char.IsDigit(e.KeyChar)) && ! (e.KeyChar == '?') && ! (char.IsControl(e.KeyChar)))
			{
				e.Handled = true;
			}
		}

        private void ChatInput_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == 13)
            {
                if (ChatInput.Text == "")
                    return;
                if (IsPrivate && ChatInput.Text.StartsWith("/me"))
                {
                    WriteMessage(new ChatMessage(MessageType.Message, CommandType.Me, Program.UserInfo, Name,Program.UserInfo.username + " " +  ChatInput.Text.Replace("/me","").Trim()));
                    Program.ChatServer.SendMessage(MessageType.PrivateMessage, CommandType.Me, Name, ChatInput.Text.Substring(4));
                }
                else if (IsPrivate && ChatInput.Text.StartsWith("/"))
                {
                    WriteMessage(new ChatMessage(MessageType.System, CommandType.None, Name, "Unknown Command."));
                    ChatInput.Clear();
                    e.Handled = true;
                    return;
                }
                else if (IsPrivate)
                {
                    WriteMessage(new ChatMessage(MessageType.PrivateMessage, CommandType.None, Program.UserInfo, Name, ChatInput.Text));
                    Program.ChatServer.SendMessage(MessageType.PrivateMessage, CommandType.None, Name, ChatInput.Text);
                }

                ChatInput.Clear();
                e.Handled = true;
            }
        }

 private void ListatextBox_KeyPress(object sender, KeyPressEventArgs e)
 {
     if ((e.KeyChar >= 48 && e.KeyChar <= 57) || (e.KeyChar >= 97 && e.KeyChar <= 122) || (e.KeyChar >= 65 && e.KeyChar <= 90) || (e.KeyChar == 8))
         e.Handled = false;
     else
         e.Handled = true;
 }

 private void customerIDBox_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (!char.IsDigit(e.KeyChar) && !(e.KeyChar == (char)Keys.Back) && !(e.KeyChar == (char)Keys.Delete))
     {
         e.Handled = true;
     }
 }

 private void txtNum1_KeyPress(object sender, KeyPressEventArgs e)
 {
     if ((txtNum1.Text.Trim() + e.KeyChar.ToString()).Split('.').Length > 2)
         e.Handled = true;
     else if (!char.IsNumber(e.KeyChar) && (Keys)e.KeyChar != Keys.Back && e.KeyChar != '.')
         e.Handled = true;
 }