    private void Form2_Load(object sender, EventArgs e)
        {
            label1.Text = "Operand:";
            label2.Text = "Field:";
            label3.Text = "Value:";
            button1.Text = "Execute";
            button2.Text = "Back";
            strCon = "Data Source=RAYANEH-C5E4683\\SQLEXPRESS;Initial Catalog=Student;Integrated Security=True";
            comboBox1.Items.Add("=");
            comboBox1.Items.Add(">");
            comboBox1.Items.Add(">=");
            comboBox1.Items.Add("<");
            comboBox1.Items.Add("<=");
            comboBox1.Items.Add("!=");
            comboBox2.Items.Add("stNo");
            comboBox2.Items.Add("Name");
            comboBox2.Items.Add("numUnit");
            comboBox2.Items.Add("Ave");
            comboBox1.Text = "=";
            comboBox2.Text = "stNo";
            textBox1.Text = "0";
        }
