新手写的进制转换器（写的很笨）

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

namespace S_H_C
{
/// <summary>
/// Form1 的摘要说明。
/// </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()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </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转换";
//
// 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码";
//
// 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 = "字符";
//
// button1
//
this.button1.Location = new System.Drawing.Point(200, 40);
this.button1.Name = "button1";
this.button1.TabIndex = 2;
this.button1.Text = "确定";
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 = "数字进制转换器";
//
// 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 = "确定";
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 = "十六进制";
//
// 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 = "二进制";
//
// 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 = "十进制";
//
// 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 = "数据转换器";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.ResumeLayout(false);

}
#endregion

/// <summary>
/// 应用程序的主入口点。
/// </summary>
///
string str;
[STAThread]
static void Main()
{

Application.Run(new Form1());

}

private void Form1_Load(object sender, System.EventArgs e)
{
timer1.Start();

}



//调用系统时间
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)
{
//转ASCII码
str=textBox1.Text;
int a;
if(str.Length>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();
}

}
//由十进制转十六进制
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("错，输入的应该是十进制整数。");
else
b=b+((int)ten[i]-48)*c;
c=1;
}
textBox5.Text=b.ToString("x8");
}
//由十进制转二进制
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);

}
//二进制转十进制
void Tw_T()
{

string two;
two=textBox4.Text;
int p=Convert.ToInt32(two,2);
textBox3.Text=p.ToString();
}
//二进制转十六进制
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();


}



}





}