WinForm child forms access the implementation of the parent form control

  • 2020-05-10 18:38:33
  • OfStack

Form1 main form:


public delegate void SetVisiableHandler();// Define the delegate type 
private void button1_Click(object sender,EventArgs e)// Click the event to open the child form 
{
    Form2 frm = new Form2(new SetVisiableHandler(SetVisiable));
    frm.Show();
}
private void SetVisiable()
{
    dataGridView1.Rows.Add("123","456","789");
}

Form2 subform:


private SetVisiableHandler m_setVisable;// Declare a delegate variable 
public Form2(SetVisiableHandler  setvisiable)
{
    InitializeComponent();
    this.m_setVisiable = setvisiable;
}
public void butten1_Click(object sender,EventArgs e)
{
    if(this.m_setVisiable != null)
    {
        this.m_setVisiable();
    }
}


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