程序出现参数有冲突 各位指点一下
下面是一个简单c#程序 但不知怎么出现参数冲突 软件没有给位置给我 不知在何处 怎样改 好晕
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace windows_表单
{

public partial class myfirstwinform: Form
{
public myfirstwinform()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{}
private System.Windows.Forms.Label mytextlabel;
private System.Windows.Forms.Button mycancelbutton;
public myfirstwinform()
{
//创建对象
this.mytextlabel=new System.Windows.Forms.Label();
this.mycancelbutton=new System.Windows.Forms.Button();
this.Text="我的表单";
//设置标签
this.mytextlabel.Location=new System.Drawing.Point(18,24);
this.mytextlabel.Text="这是一个简单的windows表单";
this.mytextlabel.Size=new System.Drawing.Size(200,24);
//设置取消按钮
this.mycancelbutton.Location=new System.Drawing.Point(148,200);
this.mycancelbutton.Size=new System.Drawing.Size(112,24);
this.mycancelbutton.Text="取消";
//设置事件
mycancelbutton.Click+=new EventHandler(mycancelbutton_Click);
//添加控件
this.AutoScaleDimensions=new System.Drawing.Size(5,12);
this.ClientSize=new System.Drawing.Size(200,200);
this.Controls.Add(this.mycancelbutton);
this.Controls.Add(this.mytextlabel);

}

//退出事件

public static void main()
{
Application.Run(new myfirstwinform());
}

private void button1_Click(object sender, EventArgs e)
{
Application.Exit();

}

private void textBox1_TextChanged(object sender, EventArgs e)
{

}
}
}

[解决办法]
两个缺省构造函数

public myfirstwinform()
{
InitializeComponent();
}


public myfirstwinform()
{
//创建对象
this.mytextlabel=new System.Windows.Forms.Label();
this.mycancelbutton=new System.Windows.Forms.Button();
this.Text="我的表单";
//设置标签
this.mytextlabel.Location=new System.Drawing.Point(18,24);
this.mytextlabel.Text="这是一个简单的windows表单";
this.mytextlabel.Size=new System.Drawing.Size(200,24);
//设置取消按钮
this.mycancelbutton.Location=new System.Drawing.Point(148,200);
this.mycancelbutton.Size=new System.Drawing.Size(112,24);
this.mycancelbutton.Text="取消";
//设置事件
mycancelbutton.Click+=new EventHandler(mycancelbutton_Click);

//添加控件
this.AutoScaleDimensions=new System.Drawing.Size(5,12);
this.ClientSize=new System.Drawing.Size(200,200);
this.Controls.Add(this.mycancelbutton);
this.Controls.Add(this.mytextlabel);


}

[解决办法]
合并为一个：

public myfirstwinform() 
        { 
            InitializeComponent(); 
                    //创建对象 
                this.mytextlabel=new System.Windows.Forms.Label(); 
                this.mycancelbutton=new System.Windows.Forms.Button(); 
                this.Text="我的表单"; 
                //设置标签 
                this.mytextlabel.Location=new System.Drawing.Point(18,24); 
                this.mytextlabel.Text="这是一个简单的windows表单"; 
                this.mytextlabel.Size=new System.Drawing.Size(200,24); 
                //设置取消按钮 
                this.mycancelbutton.Location=new System.Drawing.Point(148,200); 
                this.mycancelbutton.Size=new System.Drawing.Size(112,24); 
                this.mycancelbutton.Text="取消"; 
                //设置事件 
                mycancelbutton.Click+=new EventHandler(mycancelbutton_Click); 
                //添加控件 
                this.AutoScaleDimensions=new System.Drawing.Size(5,12); 
                this.ClientSize=new System.Drawing.Size(200,200); 
                this.Controls.Add(this.mycancelbutton); 
                this.Controls.Add(this.mytextlabel); 


          }