1、父窗体传值给子窗体
在父窗体中写:
FormChild fc = new FormChil();//新建一个子窗体
fc.ShowDialog(this);//以上两句即实现了子窗体和父窗体的联系
textBox2.Text = fc.Str1;//已实现联系,可以传值
2、子窗体传值给父窗体
有两种方法:
总结:抓住窗体对象和要传具体值的联系
代码:
Form1.cs
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace TestTransValue
{
public partial class Form1 : Form
{
private string form1Text;
public string Form1Text
{
get { return form1Text; }
set { form1Text = value; }
}
public Form1()
{
InitializeComponent();
form1Text = "这是来自Form1的Text";
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2();
f2.ShowDialog(this);
textBox1.Text = f2.Form2Text;//以上三句即可实现从子窗体向父窗体的传值
}
private void button2_Click(object sender, EventArgs e)
{
Form3 f3 = new Form3(this);
f3.ShowDialog(this);
textBox2.Text = f3.Form3Text;//以上三句即可实现从子窗体向父窗体的传值
}
}
}
Form2.cs
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 TestTransValue
{
public partial class Form2 : Form
{
private string form2Text = "这是来自form2的Text";
public string Form2Text
{
get { return form2Text; }
set { form2Text = value; }
}
public Form2()
{
InitializeComponent();
}
private void Form2_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
Form1 f1 = (Form1)this.Owner;
textBox1.Text = f1.Form1Text;//以上两句即可实现子窗体获取父窗体的值(需要在父窗体中声明)
}
}
}
Form3.cs
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 TestTransValue
{
public partial class Form3 : Form
{
private string form3Text = "这是来自form3的Text";
Form1 f1;
public string Form3Text
{
get { return form3Text; }
set { form3Text = value; }
}
public Form3(Form1 form1)
{
InitializeComponent();
f1 = form1;
}
private void Form3_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = f1.Form1Text;
}
}
}