Refreshing Datagridview when a child form is closed

Problem:

I've a dgv on my main form, there is a button that opens up another form to insert some data into the datasource bounded to the dgv. I want when child form closes the dgv auto refresh. I tried to add this in child form closing event, but it doesn't refresh:

 

Solution:

 

There are many ways to do this, but the following is the simpliest and it will do what you want and get you started.

• Create a public method on your main form.
• Modified constructor of second form to take a main form.
• Create an instance of the second form passing the main form object.
• When closing second form, call the public method of the main form object.

Form1

public partial class Form1 : Form {
    public Form1() {
        //'add a label and a buttom to form
        InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e) {
        Form2 oForm = new Form2(this);
        oForm.Show();
    }
    public void PerformRefresh() {
        this.label1.Text = DateTime.Now.ToLongTimeString();
    }
}

Form2

public class Form2 : Form {
    Form1 _owner;
    public Form2(Form1 owner) {
        _owner = owner;
        this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form2_FormClosing); // When I run this line, it shows error.
　　　　this.Disposed += new EventHandler(Form2_Disposed);// This line is used to replace above line
　　　　
    }

　　　　

　　　　private void Form2_Disposed(object sender, EventArgs e)
　　　　{
　　　　　　_owner.PerformRefersh();
　　　　}

    private void Form2_FormClosing(object sender, FormClosingEventArgs e) {
        _owner.PerformRefresh();
    }
}


Reference :  http://stackoverflow.com/questions/2395624/how-to-refresh-datagridview-when-closing-child-form