C#窗口間傳值一例(子窗口向父窗口傳值

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

namespace mail
... {
public partial class Form1:Form
... {


private string searchUrl = null ;


public Form1()
... {
InitializeComponent();
}

public string SearchUrl
... {
get
... {
return searchUrl;
}
set
... {
searchUrl = value;
}
}

private void Form1_Load( object sender,EventArgse)
... {
Form2form2 = new Form2();
form2.Owner = this ;
form2.ShowDialog();
}
}
}

子窗口:

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

namespace mail
... {
public partial class Form2:Form
... {

public Form2()
... {
InitializeComponent();
}

private void setParent()
... {
Form1f = (Form1) this .Owner;
f.SearchUrl = " www.baidu.com " ;
}
}
}