Doru Roman wrote:
Thank you all for the reply.
What I was looking for was a fast MANUAL solution (not C#) to determine a &
b result when let's say none of the integers are 255.
I had a few <ahem> minutes, and I did this, as just a little exercise
and I thought you might like it.
It's a win form application with four text boxes (one for each base: 2,
8, 10, 12). Type into any to get the results in the others.
I apologize in advance for the line wrapping. If you really want it
nicely formatted, email me and i'll send it to you as an attachement.
Scott.
Quick and dirty, a single class:
---------------------------------------------
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using System.Globalization;
using System.Text;
namespace NumberViewer
{
/// <summary>
/// Description of MainForm.
/// </summary>
public class MainForm : System.Windows.Forms.Form
{
public MainForm()
{
//
// The InitializeComponent() call is required for Windows Forms
designer support.
//
InitializeComponent();
texts = new TextBox[] {
binText, octText, decText, hexText};
}
[STAThread]
public static void Main(string[] args)
{
Application.EnableVisualStyles();
Application.Run(new MainForm());
}
#region Windows Forms Designer generated code
/// <summary>
/// This method is required for Windows Forms designer support.
/// Do not change the method contents inside the source code editor.
The Forms designer might
/// not be able to load this method if it was changed manually.
/// </summary>
private void InitializeComponent()
{
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.hexText = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.decText = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.octText = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.binText = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// groupBox2
//
this.groupBox2.Anchor =
((System.Windows.Forms.AnchorStyles)((((System.Win dows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.groupBox2.Controls.Add(this.hexText);
this.groupBox2.Controls.Add(this.label4);
this.groupBox2.Controls.Add(this.decText);
this.groupBox2.Controls.Add(this.label3);
this.groupBox2.Controls.Add(this.octText);
this.groupBox2.Controls.Add(this.label2);
this.groupBox2.Controls.Add(this.binText);
this.groupBox2.Controls.Add(this.label1);
this.groupBox2.Location = new System.Drawing.Point(1, 3);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(386, 136);
this.groupBox2.TabIndex = 1;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "Type in any box";
this.groupBox2.UseCompatibleTextRendering = true;
//
// hexText
//
this.hexText.Anchor =
((System.Windows.Forms.AnchorStyles)(((System.Wind ows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.hexText.Location = new System.Drawing.Point(71, 106);
this.hexText.Name = "hexText";
this.hexText.Size = new System.Drawing.Size(305, 21);
this.hexText.TabIndex = 7;
this.hexText.Tag = "16";
this.hexText.Enter += new
System.EventHandler(this.currentTextBoxChangedEven tHander);
this.hexText.KeyDown += new
System.Windows.Forms.KeyEventHandler(this.HexTextK eyDown);
//
// label4
//
this.label4.Location = new System.Drawing.Point(10, 106);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(100, 23);
this.label4.TabIndex = 6;
this.label4.Text = "Hex";
this.label4.UseCompatibleTextRendering = true;
//
// decText
//
this.decText.Anchor =
((System.Windows.Forms.AnchorStyles)(((System.Wind ows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.decText.Location = new System.Drawing.Point(71, 76);
this.decText.Name = "decText";
this.decText.Size = new System.Drawing.Size(305, 21);
this.decText.TabIndex = 5;
this.decText.Tag = "10";
this.decText.Enter += new
System.EventHandler(this.currentTextBoxChangedEven tHander);
this.decText.KeyDown += new
System.Windows.Forms.KeyEventHandler(this.DecTextK eyDown);
//
// label3
//
this.label3.Location = new System.Drawing.Point(10, 76);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(100, 23);
this.label3.TabIndex = 4;
this.label3.Text = "Decimal";
this.label3.UseCompatibleTextRendering = true;
//
// octText
//
this.octText.Anchor =
((System.Windows.Forms.AnchorStyles)(((System.Wind ows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.octText.Location = new System.Drawing.Point(71, 46);
this.octText.Name = "octText";
this.octText.Size = new System.Drawing.Size(305, 21);
this.octText.TabIndex = 3;
this.octText.Tag = "8";
this.octText.Enter += new
System.EventHandler(this.currentTextBoxChangedEven tHander);
this.octText.KeyDown += new
System.Windows.Forms.KeyEventHandler(this.OctTextK eyDown);
//
// label2
//
this.label2.Location = new System.Drawing.Point(10, 46);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(100, 23);
this.label2.TabIndex = 2;
this.label2.Text = "Octal";
this.label2.UseCompatibleTextRendering = true;
//
// binText
//
this.binText.Anchor =
((System.Windows.Forms.AnchorStyles)(((System.Wind ows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.binText.Location = new System.Drawing.Point(72, 17);
this.binText.Name = "binText";
this.binText.Size = new System.Drawing.Size(305, 21);
this.binText.TabIndex = 1;
this.binText.Tag = "2";
this.binText.Enter += new
System.EventHandler(this.currentTextBoxChangedEven tHander);
this.binText.KeyDown += new
System.Windows.Forms.KeyEventHandler(this.BinTextK eyDown);
//
// label1
//
this.label1.Location = new System.Drawing.Point(11, 17);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(100, 23);
this.label1.TabIndex = 0;
this.label1.Text = "Binary";
this.label1.UseCompatibleTextRendering = true;
//
// MainForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(390, 142);
this.Controls.Add(this.groupBox2);
this.Name = "MainForm";
this.Text = "Number viewer";
this.groupBox2.ResumeLayout(false);
this.groupBox2.PerformLayout();
this.ResumeLayout(false);
}
private System.Windows.Forms.TextBox binText;
private System.Windows.Forms.TextBox hexText;
private System.Windows.Forms.TextBox decText;
private System.Windows.Forms.TextBox octText;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.GroupBox groupBox2;
#endregion
TextBox current;
TextBox[] texts;
EventHandler textChangedEvent;
long theNumber;
string getHexString() {
string s = Convert.ToString(theNumber, 16).ToUpper();
StringBuilder sb = new StringBuilder(s);
for(int i=s.Length; i>0; i-=2)
sb.Insert(i, " ");
return sb.ToString();
}
string getDecString() {
StringBuilder sb = new StringBuilder( Convert.ToString(theNumber, 10));
for(int i=sb.Length; i>0; i-=3)
sb.Insert(i, " ");
return sb.ToString();
}
string getBinString() {
StringBuilder sb =
new StringBuilder(Convert.ToString(theNumber, 2));
for(int i=sb.Length; i>0; i-=4)
sb.Insert(i, " ");
return sb.ToString();
}
string getOctString() {
return Convert.ToString(theNumber, 8);
}
// the "input" text box has changed
// user is typing in a different textbox
private void currentTextBoxChangedEventHander(object sender, EventArgs e)
{
// unwire event
if(current != null && textChangedEvent != null)
current.TextChanged -= textChangedEvent;
// change textbox and wire up
current = (TextBox)sender;
textChangedEvent = new EventHandler(this.textChangedEventHandler);
current.TextChanged += textChangedEvent;
}
// text in current textbox has changed, so update others
private void textChangedEventHandler(object sender, EventArgs e) {
try {
if( (sender as TextBox).TextLength==0)
theNumber = 0;
else
setTheNumber();
setTexts();
}
catch(FormatException ex) {
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
catch(ArgumentException ex) {
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
catch(OverflowException ex) {
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
}
void setTexts() {
for(int i=0; i<texts.Length; i++) {
if(texts[i]==current) continue;
TextBox t = texts[i];
int radix = Convert.ToInt32( t.Tag );
switch(radix) {
case 2: t.Text = getBinString(); break;
case 8: t.Text = getOctString(); break;
case 10:t.Text = getDecString(); break;
case 16:t.Text = getHexString(); break;
default: throw new ArgumentOutOfRangeException(
"Base must be one of 2, 8, 10 or 16.");
}
}
}
void setTheNumber() {
int radix = Convert.ToInt32(current.Tag);
string txt = current.Text.Replace(" ", "");
theNumber = Convert.ToInt32(current.Text, radix);
}
void BinTextKeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
e.SuppressKeyPress = !keyIsValid(e.KeyCode, 2);
}
void OctTextKeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
e.SuppressKeyPress = !keyIsValid(e.KeyCode, 8);
}
void DecTextKeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
e.SuppressKeyPress = !keyIsValid(e.KeyCode, 10);
}
void HexTextKeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
e.SuppressKeyPress = !keyIsValid(e.KeyCode, 16);
}
bool keyIsValid(Keys key, int radix) {
// non-printing characters
if(key == Keys.Back
|| key == Keys.Left || key == Keys.Right) {
return true;
}
int k = (int)key;
int low1, hi1; // numbers on top of keyboard
int low2, hi2; // numeric keypad
low1 = (int)Keys.D0;
low2 = (int)Keys.NumPad0;
switch(radix) {
case 2:
hi1 = (int)Keys.D1;
hi2 = (int)Keys.NumPad1;
return (low1 <= k && k <= hi1) || (low2 <= k && k <= hi2);
case 8:
hi1 = (int)Keys.D7;
hi2 = (int)Keys.NumPad7;
return (low1 <= k && k <= hi1) || (low2 <= k && k <= hi2);
case 10:
hi1 = (int)Keys.D9;
hi2 = (int)Keys.NumPad9;
return (low1 <= k && k <= hi1) || (low2 <= k && k <= hi2);
case 16:
// check for numeric value
if( ((int)Keys.D0 <= k && k <= (int)Keys.D9) ||
((int)Keys.NumPad0 <= k && k <= (int)Keys.NumPad9))
return true;
// check for a-f/A-F value
if( ((int)Keys.A <= k && k <= (int)Keys.F ))
return true;
return false;
default:
throw new ArgumentException("Invalid radix.");
}
}
}
}
