简述：最近在做C#和HALCON编程，要用到单例的参数由子窗体改变父窗体的值。此例为简化版
1，点击系统设置
2，弹出子窗体，在其输入修改参数后点修改按钮
3，点击确定按钮后，关闭子窗体后，主窗体textbox值改变
4,单例程序如下：
public class Student
{
//创建单例类，内部静态类方法
private Student() { }//私有构造函数
class Nested
{
internal static readonly Student instance = new Student();
}
public static Student Instance
{
get { return Nested.instance; }
} //创建字段和其属性
private string name;
public string Name
{
get { return name; }
set { name = value; }
}
private int chinses; public int Chinses
{
get { return chinses; }
set { chinses = value; }
}
private int math; public int Math
{
get { return math; }
set { math = value; }
}
}
5,子窗体程序
public Setting()
{
InitializeComponent();
}
Student stu= Student.Instance; //创建单例类的对 private void Setting_Load(object sender, EventArgs e)
{ } private void BtnChange_Click(object sender, EventArgs e)
{
stu.Name = this.textBoxName.Text;//把子窗体textbox显示值赋给字段的属性
stu.Chinses = Convert.ToInt32(this.textBoxChinese.Text);
stu.Math = Convert.ToInt32(this.textBoxMath.Text);
}
6,父窗体程序
Student stu = Student.Instance;//创建单例类
private void MainForm_Load(object sender, EventArgs e)
{
this.tBName.Text = "Weber";//主窗体加载显示内容
this.tBChinese.Text = Convert.ToString();
this.tBMath.Text = Convert.ToString();
} private void ToolStripButton1_Click(object sender, EventArgs e)
{
Setting mySetting = new Setting();
mySetting.ShowDialog();//子窗体弹出 this.tBName.Text = stu.Name;//字段属性的值赋给textbox值
this.tBMath.Text = Convert.ToString(stu.Math);
this.tBChinese.Text = Convert.ToString(stu.Chinses); }
7,总结
新手一枚，如有错误请指正！