Integer TextBox

Integer TextBox

• l99057j

  You can also use NumericUpDown control.
  
  

• EppuTheHeppu

  take a look at the MaskedTextBox Class

  http://msdn2.microsoft.com/en-us/library/system.windows.forms.maskedtextbox.aspx

  to parse a string to integer use

  int.Parse(string) or int.TryParse(string)

  http://msdn.microsoft.com/library/default.asp url=/library/en-us/cpguide/html/cpconparsingnumericstrings.asp

  ralph

  
  
  

• Lowell2002

  In regards to the numericUpDown control.

  I might be totally wrong with my assumptions but I believe the numberUpDown control has its value set as a decimal. So one has to convert its decimal value into an integer value.

  int number = Convert.ToInt32(numericUpDown1.Value);

  This will place the value of the numericUpDown1 control into an integer called number.

  By default the default Increment property of the numberUpDown1 control is 1 and when you try to enter a decimal number into the control it will automatically convert it to the nearest whole number.

  Hope this helps.

  Richard.

  
  

• Adapterboy

  Thanx Boban,it would be just gr8 if you could please provide me the eaxmple,I mean the code syntax of how to use it.Thanx
  
  

• Dan987

  Hi Srock,
  
  You can handle the KeyPress event of the TextBox like this;
  
  void tb_textBox1_KeyPress(object sender, KeyPressEventArgs e)
  {
  if (char.IsDigit(e.KeyChar) || char.IsControl(e.KeyChar))
  e.Handled = false;
  else
  e.Handled = true;
  }
  
  This way, the textbox only accepts numeric values (and backspace + delete)
  
  

• Mike Pelton

  try { int number = int.Parse(textBox1.Text); textBox2.Text = "You entered " + number; }

  catch { textBox2.Text = "Error: You must enter an integer"; }

  My example isn't that good, but it assumes you try to enter an integer into textBox1. It will only set the textBox2.Text property to "You entered " and the number itself if you entered a valid integer. If not it will display an error message message.

  Hope this helps.

  Richard.

  
  
• Integer TextBox