//删除销售记录按钮事件
private void button4_Click(object sender, EventArgs e)
{
ClassSqlConnect del = new ClassSqlConnect();
string delItems;
delItems = ("SALE" + textBox1.Text.ToString() + "," + textBox5.Text.ToString() + "," + textBox7.Text.ToString() + " ");
del.Delete(delItems);
delItems = ("SALE");
DataSet ds = del.Select(delItems);
this.dataGridView1.DataSource = ds;
this.dataGridView1.DataMember = "SALE";
del.Close();
}
//删除用户按钮事件
private void ButtonDel_Click(object sender, EventArgs e)
{
ClassSqlConnect del = new ClassSqlConnect();
string delItems;
delItems = ("USER" + TextUID1.Text.ToString() + " ");
del.Delete(delItems);
delItems = ("USER");
DataSet ds = del.Select(delItems);
this.DataGridView1.DataSource = ds;
this.DataGridView1.DataMember = "USERS";
del.Close();
}