单击按钮将值从一种形式传递到另一种形式 [英] Passing Values from one Form to another Form in a Button click

问题描述

这些是我的2种表格.

These are my 2 Forms.

这些是表格1的代码->

These are the codes for Form 1-->

namespace Passing_Values
{
    public partial class Form1 : Form
    {
        string a="preset value";
        public Form1()
        {
            InitializeComponent();
        }

        private void btnOpenF2_Click(object sender, EventArgs e)
        {
            new Form2().Show();
        }

        public void set(string p)
        {
            MessageBox.Show("This is Entered text in Form 2 " + p);
            a = p;
            MessageBox.Show("a=p done! and P is: " + p + "---and a is: " + a);
            textBox1.Text = "Test 1";
            textBox2.Text = a;
            textBox3.Text = p;

        }

        private void button2_Click(object sender, EventArgs e)
        {
            MessageBox.Show(a);
        }
    }
}

这些是表格2->

namespace Passing_Values
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string g;
            g = textBox1.Text;

            Form1 j = new Form1();
            j.set(g);
        }
    }
}

查看图片.您可以了解设计.

See the picture.You can understand the design.

这就是我想要做的.首先，我使用Form1中的按钮打开Form2.然后，我输入一个文本并单击按钮(在Form1文本框中显示").单击该值时，应该在Form1的3个文本框中看到该值.我使用消息框来查看这些值是否通过.值从Form2传递到Form1.但是这些值不会显示在这3个文本框中，而传递的值将显示在消息框中.通过查看代码可以理解3个文本框的原因.那怎么了?

This is what I want to do. 1st I open Form2 using button in Form1. Then I enter a text and click the button("Display in Form1 Textbox"). When it's clicked that value should be seen in the 3 Textboxes in Form1.I used Message Boxes to see if the values are passing or not. Values get passed from Form2 to Form1. But those values are not displays in those 3 Textboxes but the passed values are displayed in Message Boxes. Reason for the 3 Text Boxes can be understood by looking at the code. So what's the error?

推荐答案

实际上我有一个要传递的对象.所以我做到了

Actually I have an object to pass. So I did this

form1->

private void btnOpenF2_Click(object sender, EventArgs e)
        {
            new Form2(this).Show();
        }

form2->

public partial class Form2 : Form
    {
        Form1 a;
        public Form2(Form1 b)
        {
            a = b;
            InitializeComponent();

        }
        private void button1_Click(object sender, EventArgs e)
        {
            string g;
            g = textBox1.Text;


            a.set(g);
            this.Close();
        }
    }

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