Adding row to databound Datagridview

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Hello,

I've got a DataGridView that I have bound to a stored procedure. I'm using
LINQ, so this is basically what I have (this was created using SQLMetal):

public ISingleResult<S toredProcedure1 Result>
StoredProcedure 1([Parameter(DbTyp e="Int")] System.Nullable <intparam1)
{
IExecuteResult result = this.ExecuteMet hodCall(this,
((MethodInfo)(M ethodInfo.GetCu rrentMethod())) , param1);
return ((ISingleResult <StoredProcedur e1Result>)(resu lt.ReturnValue) );
}


Then I just set the datasource for my datagrid:

datagridview1.D ataSource = StoredProcedure 1(param);


My question is this. I want to be able to add a row to the datagrid. How can
I do that? I don't want to add the data to the database until the user
submits the form. Could someone point me in the right direction?

Thanks for any help, I really appreciate it.

Thanks,
Nick