C# 窗体间传值总结
转自:
http://www.cnblogs.com/step/archive/2011/07/02/2096523.html
C# 窗体间传值总结
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; } } }