dataset - Refresh a dataview grid in c# -

i have form datagridview item views table databse. form adds new row table , closes self. in first form, @ closing event of second form, want first form update/refresh/refill new data added. have tried this:

this.swimmerstableadapter.update(this.databasedataset1.swimmers); 

and:

this.update(); 

but unsuccessfully.

it refresh self when stop debugging, , run again, ofcource it's not practical client/user.

any solutions ?

probably need this...

form 1:

public partial class form1 : form  {     public form1()      {         //'add label , buttom form         initializecomponent();     }      private void button1_click(object sender, eventargs e)      {         form2 frm2 = new form2(this);         frm2.show();     }      public void refreshgrid()      {         datagridview1.update();     } } 

form 2:

public class form2 : form  {     form1 _frm1;      public form2(form1 frm1)      {         _frm1 = frm1;         this.formclosing += form2_formclosing;     }      private void form2_formclosing(object sender, formclosingeventargs e)      {         _frm1.refreshgrid();     } }