.net - DataGridView sample binding issue -

i need add variable pair list in form (name-value). decided set in datagridview, , use simple binging manage (.net 2):

public class eventparameter {     private string name;      public string name     {         { return name; }         set { name = value; }     }     private string value;      public string value     {         { return this.value; }         set { this.value = value; }     } }  ///////////////////// user control initialization private list<eventparameter> eventgridparams; public grideventsender() {     initializecomponent();     eventgridparams = new list<eventparameter>();     this.datagridview1.autogeneratecolumns = true;     this.datagridview1.datasource = eventgridparams; }  ///////////////////// add parameter button private void btnaddparam_click(object sender, eventargs e) {     eventgridparams.add(new eventparameter()); } 

when launch application, see 2 columns, name , value autogenerated, , grid empty.

but when click on add parameter button, nothing happens... error?

public partial class frmgridview : form     {         private list<eventparameter> eventgridparams;         private bindingsource bs;         public frmgridview()         {             initializecomponent();             eventgridparams = new list<eventparameter>();             bs = new bindingsource();             bs.datasource = eventgridparams;             //this.datagridview1.autogeneratecolumns = true;    //you don't need             this.datagridview1.datasource = bs;         }          private void button1_click(object sender, eventargs e)         {         //eventgridparams.add(new eventparameter() { name="a", value = "a"});   //object initializer available c# 3.0         eventparameter eventparam = new eventparameter();         eventparam.name = "a";         eventparam.value = "a";         eventgridparams.add(eventparam);         bs.resetbindings(false);         }     }