How to data pass from Child Form to Parent Form ??                                                                         






 // Parent form


 public static Parent ParentRef { get; private set; }

     public Parent()
         {
            
             InitializeComponent();
             ParentRef = this;
            
         }
  
    public void datapass(string name,string result)
    {
         MessageBox.Show(name+result);
    }

 //Child form

    private void bu_send_Click(object sender, EventArgs e)
         {
             var obj_parent = Parent.ParentRef;
             obj_ot.datapass(textBox1.Text.Trim(),textBox2.Text.Trim());
             this.Close();
         }