c# 不同表單之間傳值和調用

標籤：

1.子表單事件重新整理父表單介面值

   子表單定義委託和事件  

 //聲明一個委託        public delegate void DisplayUpdateDelegate(string str);        //聲明事件        public event DisplayUpdateDelegate ShowUpdate;        private void Form2_Load(object sender, EventArgs e)        {        }        private void button1_Click(object sender, EventArgs e)        {            if (ShowUpdate != null)            {                ShowUpdate(textBox1.Text.ToString());            }        }

父表單 

   private void button3_Click(object sender, EventArgs e)        {            Form2 _frm2 = new Form2();            _frm2.ShowUpdate += new Form2.DisplayUpdateDelegate(ShowMessage);            _frm2.Show();        }        private void ShowMessage(string str)        {            textBox1.Text = str;        }

 

2.父表單的事件重新整理子表單的值

   父表單代碼

  

  public delegate void ChangeSonWindowDelegate(string str);        ChangeSonWindowDelegate _changeSonWindow;        private void button1_Click(object sender, EventArgs e)        {            Form2 _frm2 = new Form2();             _changeSonWindow = new ChangeSonWindowDelegate(_frm2.ShowMessage);            _frm2.Show();        }             private void button2_Click(object sender, EventArgs e)        {            _changeSonWindow(textBox1.Text);        }

子表單代碼 

        public void ShowMessage(string str)        {            textBox1.Text = str;        }

 

  

c# 不同表單之間傳值和調用