WinForm窗口之间传递参数的几种方法

WinForm窗口之间传递参数的几种方法。（下面做了一个小示例，因其浅显易懂，就不加注释了。若有疑问可给我发邮件yaotou.cn@qq.com）

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WinPassValue

{

public partial class MainForm : Form

{

public MainForm()

{

InitializeComponent();

SelectedType();

}

public delegate void ChangeFormValue(string s1);

//开始传递

private void btnPass_Click(object sender, EventArgs e)

{

if (cbmSelectedType.SelectedIndex == 3)

{

Form3 f3 = new Form3(txtValue);

f3.Show();

}

else if (cbmSelectedType.SelectedIndex == 2)

{

Form2 f2 = new Form2(txtValue.Text);

或 internal f2.Show();

}

else if (cbmSelectedType.SelectedIndex == 1)

{

Program.yourName = txtValue.Text;

Form1 f1 = new Form1();

f1.Show();

}

//利用Show方法重载实现。注意，此时要设置要传递控件访问权限为public else if (cbmSelectedType.SelectedIndex == 5)

{

Form5 f5 = new Form5();

f5.Show(this);

}

//委托事件传值

else if (cbmSelectedType.SelectedIndex == 4)

{

Form4 f4 = new Form4();

//订阅事件

f4.MyEvent += new Form4.PassValue(myPassValue);

f4.Show();

}

}

//定义方法

public string myPassValue()

{

return txtValue.Text.Trim();

}

//定义方法 用于选择传递参数的方式

private void SelectedType()

{

string[] strValue = { \"-请选择要传递的方式-\",\"全局变量传递\",\"构造函数传值\",\"控件传值\",\"委托事件传值\",

\"Show方法重载！\"};

cbmSelectedType.Items.AddRange(strValue);

cbmSelectedType.SelectedIndex = 0;

}

private void MainForm_Load(object sender, EventArgs e)

{

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WinPassValue

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

textBox1.ReadOnly = true;

textBox1.Text = Program.yourName+\"采用全局变量的方式实现！\";

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WinPassValue

{

public partial class Form2 : Form

{

public Form2()

{

InitializeComponent();

}

private string s2;

public Form2( string s1)

{

InitializeComponent();

s2= s1;

}

private void Form2_Load(object sender, EventArgs e)

{

textBox1.ReadOnly = true;

textBox1.Text = \"“\" + s2 + \"”\" + \"采用构造函数实现！\";

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WinPassValue

{

public partial class Form3 : Form

{

public Form3()

{

InitializeComponent();

}

private string ss;

public Form3(TextBox te)

{

InitializeComponent();

ss = te.Text; ;

}

private void Form3_Load(object sender, EventArgs e)

{

textBox1.ReadOnly = true;

textBox1.Text = \"“\" + ss + \"”\" + \"采用传递控件的方式实现！\";

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WinPassValue

{

public partial class Form4 : Form

{

public Form4()

{

InitializeComponent();

}

//定义委托

public delegate string PassValue();

//定义事件

public event PassValue MyEvent;

//委托事件传值

private void Form4_Load(object sender, EventArgs e)

{

textBox1.ReadOnly = true;

textBox1.Text=MyEvent()+\"委托事件传值实现！\";

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WinPassValue

{

public partial class Form5 : Form

{

public Form5()

现！\";

{

InitializeComponent();

}

//Show方法重载！

private void Form5_Load(object sender, EventArgs e)

{

MainForm mf=(MainForm)this.Owner;

textBox1.Text = ((TextBox)mf.txtValue).Text+\"采用Show方法重载方式实

}

}

}

当然还有其他的方法,欢迎大家互相交流学习!