不同窗体间传值

一:运行前后截图,实现功能将子窗体的lable的text值取出来给父窗体的lable的text

二:全部代码

a,父窗体

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 passV
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 将子窗体的lable的text值取出来给父窗体的lable的text
        /// </summary>
        /// <param name="txt"></param>
        private void getLableTxt(string text)
        {
            this.label1.Text = text;
        }
        /// <summary>
        /// 打开子窗体
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, EventArgs e)
        {
            son son = new son();
            if (DialogResult.OK == son.ShowDialog())
            {
                getLableTxt(son.Text);
            }

        }
    }
}

b,子窗体

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 passV
{
    public partial class son : Form
    {
        private string text;

        public string Text
        {
            get { return text; }
            set { text = value; }
        }
        
        public son()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 确定
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            Text = label1.Text;
            this.DialogResult = DialogResult.OK;
            this.Close();
        }
    }
}

三:注意事项,属性和字段的用法,后面调用的是属性