Delete Record Once It Was Copied?

I want to delete records in table1 once i copied them into table2.

Im using C#, VS08. I had created database:admin.mdf, with two tables, tblOutbox(table1) and tblSend(table2). Here are the codes on how i insert into table 2.

private void Form1_Load(object sender, EventArgs e)
{
try
{

[Code].....

What condition should i use to delete the record? this command is use when i want to delete only one record, But what if many records involve?

cmd.CommandText = "DELETE tblSend WHERE id = 5";