WinForm中页面传值的方式

http://www.cnblogs.com/moss_tan_jun/archive/2011/06/12/2078971.html

WinForm中的窗体传值有多种方法，自己结合相关资料总结了一下，大概有5种方式（或者更多）：

1、通过 ShowDialog()进行传值；

2、通过改造构造函数进行传值（加参数）；

3、通过公共静态类进行传值；

4、通过绑定事件进行传值；

5、使用Attribute（本人属初学，尚需深入研究，希望高手给与指正）

代码如下：

主窗体代码：

 

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

namespace WinTestValue
...{
    public partial class Main : Form
    ...{
        public Main()
        ...{
            InitializeComponent();
            F004_ComonClass fc = new F004_ComonClass();
            fc.Show();
        }
        方法１：通过ShowDialog进行页面传值#region 方法１：通过ShowDialog进行页面传值
        private void btn_ok_Click(object sender, EventArgs e)
        ...{
            F001_ShowDialog fs = new F001_ShowDialog();
            if (fs.ShowDialog() == DialogResult.OK)
            ...{
                this.tbx_value.Text = F001_ShowDialog.returnValue;
                MessageBox.Show("从F002_ShowDialog传值到Main窗体成功！", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

        private void btn_ok1_Click(object sender, EventArgs e)
        ...{
            F001_ShowDialog fs = new F001_ShowDialog();
            if (fs.ShowDialog() == DialogResult.OK)
            ...{
                this.tbx_value.Text = fs.ReturnValue();
                MessageBox.Show("从F002_ShowDialog传值到Main窗体成功！", "Success1", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

        private void btn_ok2_Click(object sender, EventArgs e)
        ...{
            F001_ShowDialog fs = new F001_ShowDialog();
            if (fs.ShowDialog() == DialogResult.OK)
            ...{
                this.tbx_value.Text = fs.RValue;
                MessageBox.Show("从F002_ShowDialog传值到Main窗体成功！");
            }
        }
        #endregion

        方法2: 通过构造函数进行页面传值#region 方法2: 通过构造函数进行页面传值
        private void btn_gouzao_Click(object sender, EventArgs e)
        ...{
            F002_GouZao gz = new F002_GouZao(this);
            gz.Show();
        }
        #endregion
        
        //定义textbox属性
        public TextBox Tvalue
        ...{
            get
            ...{
                return this.tbx_value;
            }
        }

        private void btn_cancel_Click(object sender, EventArgs e)
        ...{
            this.Close();
        }

        方法４：通过绑定事件进行传值#region 方法４：通过绑定事件进行传值
        private void btn_event_Click(object sender, EventArgs e)
        ...{
            F003_Event fe = new F003_Event();
            fe.myenent +=new MyEventHandler(fe_myenent);
            fe.ShowDialog();
        }
        private void fe_myenent(object sender, MyEvent e)
        ...{
            this.tbx_value.Text += e.MValue;
        }
        #endregion

        方法３：通过公共静态类进行传值#region 方法３：通过公共静态类进行传值
        private void btnComDate_Click(object sender, EventArgs e)
        ...{
            //F004_ComonClass fc = new F004_ComonClass();
            //fc.ShowDialog();
            this.tbx_value.Text = ComonData.sTextBox;
        }
        #endregion

        方法５：使用Attribute#region 方法５：使用Attribute
        protected override void WndProc(ref Message m)
        ...{
            if (m.Msg = "")
            ...{

            }
            base.WndProc(ref m);
        }

        #endregion
    }
}

F001_ShowDialog的代码：
public partial class F001_ShowDialog : Form
    ...{
        //第一种类型
        //定义一个变量
        public static string returnValue;

        //第二种类型
        //定义一个方法
        public string ReturnValue()
        ...{
            return this.tbx_value.Text.Trim();
        }

        //第三种类型
        //定义一个属性
        private string _value;
        public string RValue
        ...{
            get
            ...{
                return _value;
            }
            set
            ...{
                _value = value;
            }
        }

        public F001_ShowDialog()
        ...{
            InitializeComponent();
        }

        private void btn_ok_Click(object sender, EventArgs e)
        ...{
            returnValue = this.tbx_value.Text.Trim();
        }

        private void btn_ok1_Click(object sender, EventArgs e)
        ...{
            _value = this.tbx_value.Text.Trim();
        }
    }

 

F002_GouZao的代码：
    public partial class F002_GouZao : Form
    ...{
        //定义Main窗体的实例
        private Main main;

        //public F003_GouZao()
        //{
        //    InitializeComponent();
        //}

        public F002_GouZao(Main m)
        ...{
            InitializeComponent();
            main = m;
        }

        private void btn_ok_Click(object sender, EventArgs e)
        ...{
            main.Tvalue.Text = this.tbx_value.Text.Trim();
            MessageBox.Show("成功！");
        }
    }

 

F004_ComonClass的代码：
    public partial class F004_ComonClass : Form
    ...{
        public F004_ComonClass()
        ...{
            InitializeComponent();
            //ComonData.sTextBox = this.tbxInfo.Text.Trim().ToString();
        }

        private void btn_data_Click(object sender, EventArgs e)
        ...{
            ComonData.sTextBox = this.tbxInfo.Text.Trim().ToString();
        }
    }

 

F003_Event的代码：
    public partial class F003_Event : Form
    ...{
        //定义一个事件
        public event MyEventHandler myenent;
        public F003_Event()
        ...{
            InitializeComponent();
        }

        private void btn_ok_Click(object sender, EventArgs e)
        ...{
            if (myenent != null)
            ...{
                myenent(this,new MyEvent(this.tbx_value.Text.Trim()));
            }
        }
    }

 

自定义的委托和事件的代码：
    public delegate void MyEventHandler(object sender, MyEvent e);
    public class MyEvent : EventArgs
    ...{
        private string mvalue;
        public string MValue
        ...{
            get
            ...{
                return mvalue;
            }
        }
        public MyEvent(string s)
        ...{
            mvalue = s;
        }
    }

 
    // 定义一个公共数据类
    public static class ComonData
    ...{
        public static string sTextBox;
    }

 

Attribute部分还没完成，有些方面没有搞明白，过段时间再加上。