www. youtube. / watch?v=t-4caAZKLJw
Form to form
public partial class Form1 : Form
{
public static Form1 instance;
public TextBox tb1;
public Form1()
{
InitializeComponent();
instance = this;
tb1 = textBox1;
}
private void button1_Click(object sender, EventArgs e)
{
Form2 form = new Form2();
form.Show();
}
private void button2_Click(object sender, EventArgs e)
{
Form2.instance.lab1.Text = textBox2.Text;
}
}
public partial class Form2 : Form
{
public static Form2 instance;
public Label lab1;
public Form2()
{
InitializeComponent();
instance = this;
lab1 = label1;
}
private void button1_Click(object sender, EventArgs e)
{
Form1.instance.tb1.Text = "Ivana";
}
}
www.youtube / watch?v=nYCMW3kfTvs
Polimorfizam
namespace Polimorfizam_c
{
class Program
{
static void Main(string[] args)
{
Matematika matematika = new Matematika();
Priroda priroda = new Priroda();
Informatika informatika = new Informatika();
Predmet[] predmeti = { matematika, priroda, informatika };
foreach(Predmet predmet in predmeti)
{
predmet.Go();
}
Console.ReadKey();
}
}
}
class Predmet
{
public virtual void Go()
{
}
}
class Matematika:Predmet
{
public override void Go()
{
Console.WriteLine(“Matematika - dovoljan 2”);
}
}
class Priroda : Predmet
{
public override void Go()
{
Console.WriteLine(“Priroda - dovoljan 3”);
}
}
class Informatika : Predmet
{
public override void Go()
{
Console.WriteLine(“Informatika - odličan 5”);
}
}
www.youtube /watch?v=YRgcpaVkTjU
ContexMenuStrip
namespace Context_menu_strip
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void backgroundToolStripMenuItem_Click(object sender, EventArgs e)
{
using (ColorDialog cd = new ColorDialog())
{
if (cd.ShowDialog() == DialogResult.OK)
button1.BackColor = cd.Color;
}
}
private void foregroundToolStripMenuItem_Click(object sender, EventArgs e)
{
using (ColorDialog cd = new ColorDialog())
{
if (cd.ShowDialog() == DialogResult.OK)
button1.ForeColor = cd.Color;
}
}
}
}
www.youtube watch?v=ty-OH40JDBA
Sql čitam
namespace _1_2_zad_na_dr_nacin
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\Ivana\Documents\sql1i2.mdf;Integrated Security=True;Connect Timeout=30");
SqlCommand cmd1 = new SqlCommand("Select * from Table1 where id=@parm1", conn);
cmd1.Parameters.AddWithValue("@parm1", textBox1.Text);
SqlDataReader reader1;
conn.Open();
reader1 = cmd1.ExecuteReader();
if (reader1.Read())
{
MessageBox.Show("Pjesma: " + reader1.GetValue(1).ToString());
}
else
{
MessageBox.Show("Nije pronađeno!");
}
conn.Close();
}
}
}
www. youtube watch?v=s4rsKl19b0U
Deploy množenje
namespace deploy_pomnozi2broja
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
//double f1, g1, j;
//double.TryParse(textBox1.Text, out f1);
//double.TryParse(textBox2.Text, out g1);
//j = f1 * g1;
//if (j > 0)
//textBox3.Text = j.ToString("c").Remove(0, 1);
decimal a = decimal.Parse(textBox1.Text);
decimal b = decimal.Parse(textBox2.Text);
decimal c = a * b;
textBox3.Text = c.ToString();
}
}
}
www.youtube watch?v=fehVTLNQorQ
Po ovom videu skidamo aplikaciju na računalo!!
Broj objekata
namespace BrObjekata
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Predmet Matematika = new Predmet();
Predmet Engleski = new Predmet();
Predmet Informatika = new Predmet();
Predmet Fizika = new Predmet();
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = Predmet.VratiBroj().ToString();
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
}
}
to je forma, a moramo u tom za objekte napraviti i class odvojeno kao add class:
namespace BrObjekata
{
public class Predmet
{
public static int brojac = 0;
public Predmet()
{
brojac++;
}
public static int VratiBroj()
{
return brojac;
}
}
}
DataGridView kod:
namespace dgvdgv
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void StvoriGrid()
{
int brojRedaka = int.Parse(tbBrojRedaka.Text);
int brojStupaca = int.Parse(tbBrojStupaca.Text);
// Podesi broj redaka i stupaca
dataGridView1.ColumnCount = brojStupaca;
dataGridView1.RowCount = brojRedaka;
// Podesi imena stupaca
for (int i = 0; i < brojStupaca; i++)
{
dataGridView1.Columns[i].Name = "Stupac " + i.ToString();
}
// Podesi svojstva ćelija - boja pozadine, font ...
DataGridViewCellStyle columnHeaderStyle = new
DataGridViewCellStyle();
columnHeaderStyle.BackColor = Color.Beige;
columnHeaderStyle.Font =
new Font("Verdana", 10, FontStyle.Bold);
dataGridView1.ColumnHeadersDefaultCellStyle =
columnHeaderStyle;
}
private void button1_Click(object sender, EventArgs e)
{
StvoriGrid();
}
private void ZbrojiRedak()
{
//odredi indekse trenutno aktivne ćelije
int trenutniRedak = dataGridView1.CurrentRow.Index;
int brojStupaca = dataGridView1.Columns.Count;
float sumaRetka = 0;
//sumiraj redak s očitanim vrijednostima ćelija
for (int j = 0; j < brojStupaca; j++)
{
sumaRetka += float.Parse
(dataGridView1[j, trenutniRedak].Value.ToString());
}
//pridruži rezultat na kontrolu tbSumaStupca
tbSumaRetka.Text = sumaRetka.ToString();
}
private void ZbrojiStupac()
{
//odredi indekse trenutno aktivne ćelije
int trenutniStupac = dataGridView1.CurrentCell.ColumnIndex;
int brojRedaka = dataGridView1.RowCount;
float sumaStupca = 0;
//sumiraj stupac s očitanim vrijednostima ćelija
for (int i = 0; i < brojRedaka - 1; i++)
{
sumaStupca += float.Parse(dataGridView1[trenutniStupac,
i].Value.ToString());
}
//pridruži rezultat na kontrolu tbSumaStupca
tbSumaStupca.Text = sumaStupca.ToString();
}
private void button2_Click(object sender, EventArgs e)
{
ZbrojiRedak();
}
private void button3_Click(object sender, EventArgs e)
{
ZbrojiStupac();
}
private void ZbrojiSve()
{
int trenutniRedak = dataGridView1.CurrentRow.Index;
int trenutniStupac = dataGridView1.CurrentCell.ColumnIndex;
int brojRedaka = dataGridView1.RowCount;
int brojStupaca = dataGridView1.Columns.Count;
float suma = 0;
for (int i = 0; i < brojRedaka - 1; i++)
{
for (int j = 0; j < brojStupaca; j++)
{
suma += float.Parse(dataGridView1[i, j].Value.ToString());
}
}
ZbrojiSveTB.Text = suma.ToString();
}
private void button4_Click(object sender, EventArgs e)
{
ZbrojiSve();
}
}
}
Sql pišem (video za projekt od nekih 15ak min)
Klasa pravokutnik:
#include
using namespace std;
class Pravokutnik
{
private:
int duzina;
int sirina;
public:
Pravokutnik()
{
duzina = 0;
sirina = 0;
}
Pravokutnik(int a)//kostruktor,zove se kao klasa,ne vraća ništa,čak ni void,kreira objekt
{
duzina = a;
sirina = 0;
}
Pravokutnik(int a, int b)
{
duzina = a;
sirina = b;
}
int vratiDuzinu()
{
return duzina;
}
int vratiSirinu()
{
return sirina;
}
void postaviDuzinu(int a)
{
duzina = a;
}
void postaviSirinu(int a)
{
sirina = a;
}
int Opseg()
{
return 2 * duzina + 2 * sirina;
}
int Povrsina()
{
return duzina * sirina;
}
};
class ZbrajanjeObjekata {
public:
int zbroji_opsege_2_prav(Pravokutnik a, Pravokutnik b)
{
return a.Opseg() + b.Opseg();
}
};
int main()
{
Pravokutnik A1(2, 3), B1(5, 4);
ZbrajanjeObjekata ZO;
cout << "zbroj opsega pravokutnika je: " << ZO.zbroji_opsege_2_prav(A1, B1) << endl;
}
MySql piši:
using MySql.Data.MySqlClient;
namespace _1_1_1_1
{
public partial class Form1 : Form
{
//MySqlConnection connection = new MySqlConnection(“datasource=localhost;port=3306;username=root;password=”);
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
MySqlConnection conn;
string myconnectionString;
myconnectionString = "server=127.0.0.1;uid=root;pwd=;database=ispit";
conn = new MySql.Data.MySqlClient.MySqlConnection();
conn.ConnectionString = myconnectionString;
conn.Open();
MySqlCommand cmd = new MySqlCommand("insert into kolegij values (@Ime,@Prezime)", conn);
cmd.Parameters.AddWithValue("@Ime", textBox1.Text);
cmd.Parameters.AddWithValue("@Prezime", textBox2.Text);
cmd.ExecuteNonQuery();
MessageBox.Show("Uspješno!");
conn.Close();
}
}
}
