New handwriting into the converter (very stupid to write)

Convert using System;
Using System.Drawing;
Using System.Collections;
Using System.ComponentModel;
Using System.Windows.Forms;
Using System.Data;

Namespace S_h_c
{
<summary>
Summary description of the Form1.
</summary>
///

public class Form1:System.Windows.Forms.Form
{
Private System.Windows.Forms.GroupBox GroupBox1;
Private System.Windows.Forms.Label Label1;
Private System.Windows.Forms.Label Label2;
Private System.Windows.Forms.TextBox TextBox1;
Private System.Windows.Forms.TextBox TextBox2;
Private System.Windows.Forms.GroupBox GroupBox2;
Private System.Windows.Forms.Label label3;
Private System.Windows.Forms.Label label4;
Private System.Windows.Forms.Label Label5;
Private System.Windows.Forms.TextBox TextBox3;
Private System.Windows.Forms.TextBox textBox4;
Private System.Windows.Forms.TextBox textBox5;
Private System.Windows.Forms.Button button1;
Private System.Windows.Forms.Button button2;
Private System.Windows.Forms.Label label6;
Private System.Windows.Forms.Timer timer1;
Private System.ComponentModel.IContainer components;

Public Form1 ()
{
//
Required for Windows Forms Designer support
//
InitializeComponent ();

//
TODO: Add any constructor code after the InitializeComponent call
//
}

<summary>
Clean up all resources that are in use.
</summary>
protected override void Dispose (bool disposing)
{
if (disposing)
{
if (Components!= null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing);
}

Code generated #region the Windows forms Designer
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
this.components = new System.ComponentModel.Container ();
This.groupbox1 = new System.Windows.Forms.GroupBox ();
This.textbox2 = new System.Windows.Forms.TextBox ();
This.textbox1 = new System.Windows.Forms.TextBox ();
This.label2 = new System.Windows.Forms.Label ();
This.label1 = new System.Windows.Forms.Label ();
This.button1 = new System.Windows.Forms.Button ();
This.groupbox2 = new System.Windows.Forms.GroupBox ();
This.button2 = new System.Windows.Forms.Button ();
THIS.TEXTBOX5 = new System.Windows.Forms.TextBox ();
This.textbox4 = new System.Windows.Forms.TextBox ();
This.textbox3 = new System.Windows.Forms.TextBox ();
This.label5 = new System.Windows.Forms.Label ();
This.label4 = new System.Windows.Forms.Label ();
This.label3 = new System.Windows.Forms.Label ();
This.label6 = new System.Windows.Forms.Label ();
This.timer1 = new System.Windows.Forms.Timer (this.components);
This.groupBox1.SuspendLayout ();
This.groupBox2.SuspendLayout ();
This. SuspendLayout ();
//
GroupBox1
//
THIS.GROUPBOX1.CONTROLS.ADD (THIS.TEXTBOX2);
THIS.GROUPBOX1.CONTROLS.ADD (This.textbox1);
THIS.GROUPBOX1.CONTROLS.ADD (THIS.LABEL2);
THIS.GROUPBOX1.CONTROLS.ADD (THIS.LABEL1);
THIS.GROUPBOX1.CONTROLS.ADD (This.button1);
This.groupBox1.Location = new System.Drawing.Point (24, 16);
This.groupBox1.Name = "GroupBox1";
This.groupBox1.Size = new System.Drawing.Size (288, 112);
This.groupBox1.TabIndex = 0;
This.groupBox1.TabStop = false;
This.groupBox1.Text = "ASCII conversion";
//
TextBox2
//
This.textBox2.Location = new System.Drawing.Point (112, 64);
This.textBox2.Name = "TextBox2";
This.textBox2.Size = new System.Drawing.Size (80, 21);
This.textBox2.TabIndex = 3;
This.textBox2.Text = "";
//
TextBox1
//
This.textBox1.Location = new System.Drawing.Point (112, 24);
This.textBox1.Name = "TextBox1";
This.textBox1.Size = new System.Drawing.Size (80, 21);
This.textBox1.TabIndex = 2;
This.textBox1.Text = "";
This.textBox1.TextChanged + = new System.EventHandler (this.textbox1_textchanged);
//
Label2
//
This.label2.Location = new System.Drawing.Point (8, 72);
This.label2.Name = "Label2";
This.label2.Size = new System.Drawing.Size (72, 24);
This.label2.TabIndex = 1;
This.label2.Text = "ASCII code";
//
Label1
//
This.label1.Location = new System.Drawing.Point (8, 24);
This.label1.Name = "Label1";
This.label1.Size = new System.Drawing.Size (80, 24);
This.label1.TabIndex = 0;
This.label1.Text = "character";
//
Button1
//
This.button1.Location = new System.Drawing.Point (200, 40);
This.button1.Name = "Button1";
This.button1.TabIndex = 2;
This.button1.Text = "OK";
This.button1.Click + = new System.EventHandler (This.button1_click);
//
GroupBox2
//
THIS.GROUPBOX2.CONTROLS.ADD (This.button2);
THIS.GROUPBOX2.CONTROLS.ADD (THIS.TEXTBOX5);
THIS.GROUPBOX2.CONTROLS.ADD (THIS.TEXTBOX4);
THIS.GROUPBOX2.CONTROLS.ADD (THIS.TEXTBOX3);
THIS.GROUPBOX2.CONTROLS.ADD (THIS.LABEL5);
THIS.GROUPBOX2.CONTROLS.ADD (THIS.LABEL4);
THIS.GROUPBOX2.CONTROLS.ADD (THIS.LABEL3);
This.groupBox2.Location = new System.Drawing.Point (24, 152);
This.groupBox2.Name = "GroupBox2";
This.groupBox2.Size = new System.Drawing.Size (288, 144);
This.groupBox2.TabIndex = 1;
This.groupBox2.TabStop = false;
This.groupBox2.Text = "Digital conversion converter";
//
Button2
//
This.button2.Location = new System.Drawing.Point (208, 56);
This.button2.Name = "Button2";
This.button2.Size = new System.Drawing.Size (64, 24);
This.button2.TabIndex = 6;
This.button2.Text = "OK";
This.button2.Click + = new System.EventHandler (This.button2_click);
//
TextBox5
//
This.textBox5.Location = new System.Drawing.Point (120, 104);
This.textBox5.Name = "TEXTBOX5";
This.textBox5.Size = new System.Drawing.Size (80, 21);
This.textBox5.TabIndex = 5;
This.textBox5.Text = "";
//
TextBox4
//
This.textBox4.Location = new System.Drawing.Point (120, 64);
This.textBox4.Name = "TextBox4";
This.textBox4.Size = new System.Drawing.Size (80, 21);
This.textBox4.TabIndex = 4;
This.textBox4.Text = "";
//
TextBox3
//
This.textBox3.Location = new System.Drawing.Point (120, 24);
This.textBox3.Name = "TextBox3";
This.textBox3.Size = new System.Drawing.Size (80, 21);
This.textBox3.TabIndex = 3;
This.textBox3.Text = "";
//
Label5
//
This.label5.Location = new System.Drawing.Point (16, 112);
This.label5.Name = "Label5";
This.label5.Size = new System.Drawing.Size (88, 24);
This.label5.TabIndex = 2;
This.label5.Text = "hexadecimal";
//
Label4
//
This.label4.Location = new System.Drawing.Point (16, 72);
This.label4.Name = "Label4";
This.label4.Size = new System.Drawing.Size (88, 24);
This.label4.TabIndex = 1;
This.label4.Text = "binary system";
//
Label3
//
This.label3.Location = new System.Drawing.Point (16, 24);
This.label3.Name = "Label3";
This.label3.Size = new System.Drawing.Size (88, 24);
This.label3.TabIndex = 0;
This.label3.Text = "decimal";
//
Label6
//
This.label6.Location = new System.Drawing.Point (88, 304);
This.label6.Name = "Label6";
This.label6.Size = new System.Drawing.Size (208, 16);
This.label6.TabIndex = 2;
//
Timer1
//
This.timer1.Tick + = new System.EventHandler (This.timer1_tick);
//
Form1
//
This. AutoScaleBaseSize = new System.Drawing.Size (6, 14);
This. ClientSize = new System.Drawing.Size (342, 323);
This. Controls.Add (THIS.LABEL6);
This. Controls.Add (THIS.GROUPBOX2);
This. Controls.Add (This.groupbox1);
This. Name = "Form1";
This. Text = "Data converter";
This. Load + = new System.EventHandler (this. Form1_Load);
This.groupBox1.ResumeLayout (FALSE);
This.groupBox2.ResumeLayout (FALSE);
This. ResumeLayout (FALSE);

}
#endregion

<summary>
The main entry point for the application.
</summary>
///
String str;
[STAThread]
static void Main ()
{

Application.Run (New Form1 ());

}

private void Form1_Load (object sender, System.EventArgs e)
{
Timer1. Start ();

}



Call system time
void Datetimetostring ()
{
DateTime Now=datetime.now;
string format;
Label6. Text= "";
format= "Yyyy-mm-dd HH:mm:ss";
Label6. Text=now. ToString (format);
}
private void Button1_Click (object sender, System.EventArgs e)
{
Turn ASCII code
Str=textbox1.text;
int A;
if (str. LENGTH&GT;1)
MessageBox.Show ("Error,please input the char!");
a= (int) str[0];
Textbox2.text=a.tostring ();
}

private void textBox1_TextChanged (object sender, System.EventArgs e)
{

}

private void Button2_Click (object sender, System.EventArgs e)
{

if (textbox3.text!= "")
{
t_s ();
T_TW ();
}
else if (textbox4.text!= "")
{
Tw_t ();
tw_s ();
}

}
Hexadecimal by decimal
void t_s ()
{
String Ten;
int b=0;
Ten=textbox3.text;

for (int i=0;i<ten. length;i++)
{

int c=1;
for (int j=ten. length-i-1;j>0;j--)
{
c=c*10;

}
if (ten[i]>57 | | ten[i]<48)
MessageBox.Show ("wrong, the input should be a decimal integer.") ");
Else
b=b+ ((int) ten[i]-48) *c;
C=1;
}
textbox5.text=b.tostring ("x8");
}
Binary binary by decimal
void T_tw ()
{

int b=0;
String Ten;
int c=1;

Ten=textbox3.text;

for (int i=0;i<ten. length;i++)
{


for (int j=ten. length-i-1;j>0;j--)
{
c=c*10;

}

b=b+ ((int) ten[i]-48) *c;
C=1;
}
Textbox4.text=convert.tostring (b,2);

}
Binary Turn Decimal
void tw_t ()
{

String two;
Two=textbox4.text;
int P=convert.toint32 (two,2);
Textbox3.text=p.tostring ();
}
Binary turn hexadecimal
void tw_s ()
{

String two;
Two=textbox4.text;

int S=convert.toint32 (two,2);
textbox5.text=s.tostring ("x8");
}

private void Timer1_Tick (object sender, System.EventArgs e)
{

Datetimetostring ();


}



}





}