using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class KeyEventDetailInfo : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtInput;
private System.Windows.Forms.Label lblUpper;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label lblLower;
private System.Windows.Forms.Button btnReset;
public KeyEventDetailInfo()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.txtInput = new System.Windows.Forms.TextBox();
this.btnReset = new System.Windows.Forms.Button();
this.lblUpper = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.lblLower = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// txtInput
//
this.txtInput.Location = new System.Drawing.Point(8, 8);
this.txtInput.Name = "txtInput";
this.txtInput.TabIndex = 0;
this.txtInput.Text = "";
this.txtInput.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txtInput_KeyDown);
this.txtInput.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtInput_KeyPress);
this.txtInput.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txtInput_KeyUp);
//
// btnReset
//
this.btnReset.Location = new System.Drawing.Point(328, 8);
this.btnReset.Name = "btnReset";
this.btnReset.TabIndex = 2;
this.btnReset.Text = "Reset";
this.btnReset.Click += new System.EventHandler(this.btnReset_Click);
//
// lblUpper
//
this.lblUpper.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblUpper.Location = new System.Drawing.Point(368, 56);
this.lblUpper.Name = "lblUpper";
this.lblUpper.Size = new System.Drawing.Size(32, 23);
this.lblUpper.TabIndex = 3;
//
// label2
//
this.label2.Location = new System.Drawing.Point(320, 56);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(40, 16);
this.label2.TabIndex = 4;
this.label2.Text = "Upper:";
this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
//
// label1
//
this.label1.Location = new System.Drawing.Point(320, 104);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(40, 16);
this.label1.TabIndex = 5;
this.label1.Text = "Lower:";
this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
//
// lblLower
//
this.lblLower.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblLower.Location = new System.Drawing.Point(368, 104);
this.lblLower.Name = "lblLower";
this.lblLower.Size = new System.Drawing.Size(32, 23);
this.lblLower.TabIndex = 6;
//
// KeyEventDetailInfo
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(417, 293);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lblLower,
this.label1,
this.label2,
this.lblUpper,
this.btnReset,
this.txtInput});
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new KeyEventDetailInfo());
}
private void txtInput_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
Console.WriteLine("KeyCode name: " + e.KeyCode);
Console.WriteLine("KeyCode key code: " + ((int)e.KeyCode));
Console.WriteLine("KeyData name: " + e.KeyData);
Console.WriteLine("KeyData key code: " + ((int)e.KeyData));
Console.WriteLine("KeyValue: " + e.KeyValue);
Console.WriteLine("Handled: " + e.Handled);
}
private void txtInput_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
char keyChar;
keyChar = e.KeyChar;
Console.WriteLine("KeyPress event.");
Console.WriteLine("KeyChar: " + keyChar);
Console.WriteLine("KeyChar Code: " + (int)keyChar);
Console.WriteLine("Handled: " + e.Handled);
lblUpper.Text = keyChar.ToString().ToUpper();
lblLower.Text = keyChar.ToString().ToLower();
if (keyChar.ToString() == "$")
{
txtInput.AppendText("#");
e.Handled = true;
}
}
private void txtInput_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
Console.WriteLine("KeyCode name: " + e.KeyCode);
Console.WriteLine("KeyCode key code: " + ((int)e.KeyCode));
Console.WriteLine("KeyData name: " + e.KeyData);
Console.WriteLine("KeyData key code: " + ((int)e.KeyData));
Console.WriteLine("KeyValue: " + e.KeyValue);
Console.WriteLine("Handled: " + e.Handled);
}
private void btnReset_Click(object sender, System.EventArgs e)
{
txtInput.Text = "";
lblUpper.Text = "";
lblLower.Text = "";
}
}using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class TextCancelEventKeyEvent : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtInput;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label lblTrue;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label lblCheck;
private System.Windows.Forms.Label lblResults;
public TextCancelEventKeyEvent()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.txtInput = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.lblTrue = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.lblCheck = new System.Windows.Forms.Label();
this.lblResults = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// label1
//
this.label1.Font = new System.Drawing.Font("Tahoma", 14.25F, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic), System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(48, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(176, 23);
this.label1.TabIndex = 0;
this.label1.Text = "ISBN Validation";
//
// txtInput
//
this.txtInput.Location = new System.Drawing.Point(72, 64);
this.txtInput.Name = "txtInput";
this.txtInput.TabIndex = 1;
this.txtInput.Text = "";
this.txtInput.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtInput_KeyPress);
this.txtInput.Validating += new System.ruponentModel.CancelEventHandler(this.handleCancleEvent);
//
// label2
//
this.label2.Location = new System.Drawing.Point(24, 104);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(80, 23);
this.label2.TabIndex = 2;
this.label2.Text = "True Number:";
//
// lblTrue
//
this.lblTrue.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblTrue.Location = new System.Drawing.Point(112, 104);
this.lblTrue.Name = "lblTrue";
this.lblTrue.TabIndex = 3;
//
// label3
//
this.label3.Location = new System.Drawing.Point(32, 152);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(72, 23);
this.label3.TabIndex = 4;
this.label3.Text = "Check Digit:";
//
// lblCheck
//
this.lblCheck.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblCheck.Location = new System.Drawing.Point(112, 152);
this.lblCheck.Name = "lblCheck";
this.lblCheck.TabIndex = 5;
//
// lblResults
//
this.lblResults.Location = new System.Drawing.Point(56, 192);
this.lblResults.Name = "lblResults";
this.lblResults.Size = new System.Drawing.Size(152, 24);
this.lblResults.TabIndex = 8;
//
// TextCancelEventKeyEvent
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 293);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lblResults,
this.lblCheck,
this.label3,
this.lblTrue,
this.label2,
this.txtInput,
this.label1});
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new TextCancelEventKeyEvent());
}
private void handleCancleEvent(object sender, System.ruponentModel.CancelEventArgs e)
{
TextBox tb = (TextBox)sender;
string strInput = tb.Text;
Console.WriteLine(strInput);
}
private void txtInput_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
char keyChar;
keyChar = e.KeyChar;
if(!Char.IsDigit(keyChar) // 0 - 9
&&
keyChar != 8 // backspace
&&
keyChar != 13 // enter
&&
keyChar != "x"
&&
keyChar != 45 // dash/minus
){
// Do not display the keystroke
e.Handled = true;
}
}
}using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class KeyEventDetailInfo : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtInput;
private System.Windows.Forms.Label lblUpper;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label lblLower;
private System.Windows.Forms.Button btnReset;
public KeyEventDetailInfo()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.txtInput = new System.Windows.Forms.TextBox();
this.btnReset = new System.Windows.Forms.Button();
this.lblUpper = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.lblLower = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// txtInput
//
this.txtInput.Location = new System.Drawing.Point(8, 8);
this.txtInput.Name = "txtInput";
this.txtInput.TabIndex = 0;
this.txtInput.Text = "";
this.txtInput.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txtInput_KeyDown);
this.txtInput.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtInput_KeyPress);
this.txtInput.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txtInput_KeyUp);
//
// btnReset
//
this.btnReset.Location = new System.Drawing.Point(328, 8);
this.btnReset.Name = "btnReset";
this.btnReset.TabIndex = 2;
this.btnReset.Text = "Reset";
this.btnReset.Click += new System.EventHandler(this.btnReset_Click);
//
// lblUpper
//
this.lblUpper.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblUpper.Location = new System.Drawing.Point(368, 56);
this.lblUpper.Name = "lblUpper";
this.lblUpper.Size = new System.Drawing.Size(32, 23);
this.lblUpper.TabIndex = 3;
//
// label2
//
this.label2.Location = new System.Drawing.Point(320, 56);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(40, 16);
this.label2.TabIndex = 4;
this.label2.Text = "Upper:";
this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
//
// label1
//
this.label1.Location = new System.Drawing.Point(320, 104);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(40, 16);
this.label1.TabIndex = 5;
this.label1.Text = "Lower:";
this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
//
// lblLower
//
this.lblLower.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblLower.Location = new System.Drawing.Point(368, 104);
this.lblLower.Name = "lblLower";
this.lblLower.Size = new System.Drawing.Size(32, 23);
this.lblLower.TabIndex = 6;
//
// KeyEventDetailInfo
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(417, 293);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lblLower,
this.label1,
this.label2,
this.lblUpper,
this.btnReset,
this.txtInput});
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new KeyEventDetailInfo());
}
private void txtInput_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
Console.WriteLine("KeyCode name: " + e.KeyCode);
Console.WriteLine("KeyCode key code: " + ((int)e.KeyCode));
Console.WriteLine("KeyData name: " + e.KeyData);
Console.WriteLine("KeyData key code: " + ((int)e.KeyData));
Console.WriteLine("KeyValue: " + e.KeyValue);
Console.WriteLine("Handled: " + e.Handled);
}
private void txtInput_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
char keyChar;
keyChar = e.KeyChar;
Console.WriteLine("KeyPress event.");
Console.WriteLine("KeyChar: " + keyChar);
Console.WriteLine("KeyChar Code: " + (int)keyChar);
Console.WriteLine("Handled: " + e.Handled);
lblUpper.Text = keyChar.ToString().ToUpper();
lblLower.Text = keyChar.ToString().ToLower();
if (keyChar.ToString() == "$")
{
txtInput.AppendText("#");
e.Handled = true;
}
}
private void txtInput_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
Console.WriteLine("KeyCode name: " + e.KeyCode);
Console.WriteLine("KeyCode key code: " + ((int)e.KeyCode));
Console.WriteLine("KeyData name: " + e.KeyData);
Console.WriteLine("KeyData key code: " + ((int)e.KeyData));
Console.WriteLine("KeyValue: " + e.KeyValue);
Console.WriteLine("Handled: " + e.Handled);
}
private void btnReset_Click(object sender, System.EventArgs e)
{
txtInput.Text = "";
lblUpper.Text = "";
lblLower.Text = "";
}
}