// Fig. 16.15: StaticCharMethods.cs
// Demonstrates static character testing methods 
// from Char struct
using System;
using System.Windows.Forms;

public partial class StaticCharMethodsForm : Form
{
   // default constructor
   public StaticCharMethodsForm()
   {
      InitializeComponent();
   } // end constructor

   // handle analyzeButton_Click
   private void analyzeButton_Click( object sender, EventArgs e )
   {
      // convert string entered to type char
      char character = Convert.ToChar( inputTextBox.Text );
      string output;

      output = "is digit: " +
         Char.IsDigit( character ) + "\r\n";
      output += "is letter: " +
         Char.IsLetter( character ) + "\r\n";
      output += "is letter or digit: " +
         Char.IsLetterOrDigit( character ) + "\r\n";
      output += "is lower case: " +
         Char.IsLower( character ) + "\r\n";
      output += "is upper case: " +
         Char.IsUpper( character ) + "\r\n";
      output += "to upper case: " +
         Char.ToUpper( character ) + "\r\n";
      output += "to lower case: " +
         Char.ToLower( character ) + "\r\n";
      output += "is punctuation: " +
         Char.IsPunctuation( character ) + "\r\n";
      output += "is symbol: " + Char.IsSymbol( character );
      outputTextBox.Text = output;
   } // end method analyzeButton_Click
} // end class StaticCharMethodsForm

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