StudentSystem/Form1.cs at master · miko44quliyev/StudentSystem · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
namespace StudentSystem
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            toolTip1.IsBalloon = true;
            toolTip1.ToolTipTitle = "Input rule";
            toolTip1.ToolTipIcon = ToolTipIcon.Info;
            toolTip1.SetToolTip(maskedTextBox1, "Only numbers from 1 to 10 are allowed");
            toolTip1.SetToolTip(maskedTextBox6, "Only numbers from 1 to 10 are allowed");
            toolTip1.SetToolTip(maskedTextBox3, "Only numbers from 1 to 50 are allowed");
            toolTip1.SetToolTip(maskedTextBox4, "Only numbers from 1 to 20 are allowed");
            toolTip1.SetToolTip(maskedTextBox5, "Only numbers from 1 to 10 are allowed");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (maskedTextBox1.Text == "" || maskedTextBox3.Text == "" || maskedTextBox4.Text == "" ||
               maskedTextBox5.Text == "" || maskedTextBox6.Text == "" ||
               Convert.ToInt16(maskedTextBox1.Text) < 1 || Convert.ToInt16(maskedTextBox1.Text) > 10 ||
               Convert.ToInt16(maskedTextBox6.Text) < 1 || Convert.ToInt16(maskedTextBox6.Text) > 10 ||
               Convert.ToInt16(maskedTextBox3.Text) < 1 || Convert.ToInt16(maskedTextBox3.Text) > 50 ||
               Convert.ToInt16(maskedTextBox4.Text) < 1 || Convert.ToInt16(maskedTextBox4.Text) > 20 ||
               Convert.ToInt16(maskedTextBox5.Text) < 1 || Convert.ToInt16(maskedTextBox5.Text) > 10)
            {
                MessageBox.Show("Please enter valid values according to the input rules.", "Invalid Input",
                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
            else if (textBox1.Text == "" || maskedTextBox2.Text == "" || maskedTextBox2.Text.Length != 9 ||
                    !textBox1.Text.All(c => char.IsLetter(c) || char.IsWhiteSpace(c)))
            {
                errorProvider1.SetError(textBox1, "Please input name and surname");
                errorProvider2.SetError(maskedTextBox2, "Please input valid student number");
            }
            else
            {
                int result =
                    Convert.ToInt16(maskedTextBox1.Text) +
                    Convert.ToInt16(maskedTextBox6.Text) +
                    Convert.ToInt16(maskedTextBox3.Text) +
                    Convert.ToInt16(maskedTextBox4.Text) +
                    Convert.ToInt16(maskedTextBox5.Text);
                string grade = result switch
                {
                    >= 91 and <= 100 => "A",
                    >= 81 and <= 90 => "B",
                    >= 71 and <= 80 => "C",
                    >= 61 and <= 70 => "D",
                    >= 51 and <= 60 => "E",
                    _ => "F",
                };
                dataGridView1.Rows.Add(textBox1.Text, maskedTextBox2.Text, result + " - " + grade);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            maskedTextBox1.Clear();
            maskedTextBox3.Clear();
            maskedTextBox4.Clear();
            maskedTextBox5.Clear();
            maskedTextBox6.Clear();
            textBox1.Clear();
            maskedTextBox2.Clear();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}