C# i forme

Code:

public static void Main()
{
    //...
    PrvaForma forma1 = new PrvaForma();
    DrugaForma forma2 = new DrugaForma();
    TrecaForma forma3 = new TrecaForma();
    PrvaForma.Hide();
    DrugaForma.Hide();
    //...
    if (TrecaForma.ShowDialog() == DialogResult.OK)
    {
        PrvaForma.Show();
        DrugaForma.Show();
    }
    while (true)
        Application.DoEvents();
}

Code:

using System;
using System.Windows.Forms;

public class Form1 : Form
{
    public Form1()
    {
        this.Text = "Forma 1 - MDI kontejner";
    }
}

public class Form2 : Form
{
    public Form2()
    {
        this.Text = "Forma 2 - MDI child";
    }
}

public class Form3 : Form
{
    public string Pokrenuti = "?";
    public Form3()
    {
        this.Text = "Forma 3 - dijalog";
        this.Show();
        if (MessageBox.Show("Pokrenuti ostale dvije forme?",
            "Ovo je MessageBox",
            MessageBoxButtons.YesNo) == DialogResult.Yes)
            this.Pokrenuti = "Da";
        else
            this.Pokrenuti = "Ne";
    }
}

public class Test
{
    [STAThread]
    static void Main() 
    {
        Form3 forma3 = new Form3();
        while (forma3.Pokrenuti == "?")
            Application.DoEvents();
        if (forma3.Pokrenuti == "Da")
        {
            forma3.Close();
            Form1 forma1 = new Form1();
            Form2 forma2 = new Form2();
            forma1.IsMdiContainer = true;
            forma2.MdiParent = forma1;
            forma1.Show();
            forma2.Show();
            Application.Run(forma1);
        }
        else
        {
            forma3.Dispose();
        }
    }
}

Code:
using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;


namespace WindowsApplication1

{

/// <summary>

/// Summary description for Form3.

/// </summary>

public class Form1 : System.Windows.Forms.Form

{

private System.Windows.Forms.TextBox textUser;

private System.Windows.Forms.TextBox textPass;

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Label label2;

private System.Windows.Forms.Button btnOK;

private System.Windows.Forms.Button btnCancel;

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.Container components = null;


public Form1()

{

//

// Required for Windows Form Designer support

//

InitializeComponent();


this.btnOK.Enabled = false;

this.textUser.Tag = false;

this.textPass.Tag = false;


this.textUser.Validating += new

System.ComponentModel.CancelEventHandler(this.txtBoxUser_Validating);

this.textPass.Validating += new

System.ComponentModel.CancelEventHandler(this.txtBoxPass_Validating);

this.textUser.TextChanged += new System.EventHandler

(this.txtBoxUser_TextChanged);

this.textPass.TextChanged += new System.EventHandler

(this.txtBoxPass_TextChanged);



//

// TODO: Add any constructor code after InitializeComponent call

//

}


/// <summary>

/// Clean up any resources being used.

/// </summary>

protected override void Dispose( bool disposing )

{

if( disposing )

{

if(components != null)

{

components.Dispose();

}

}

base.Dispose( disposing );

}


#region Windows Form Designer generated code

/// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

System.Resources.ResourceManager resources = new

System.Resources.ResourceManager(typeof(Form1));

this.textUser = new System.Windows.Forms.TextBox();

this.textPass = new System.Windows.Forms.TextBox();

this.label1 = new System.Windows.Forms.Label();

this.label2 = new System.Windows.Forms.Label();

this.btnOK = new System.Windows.Forms.Button();

this.btnCancel = new System.Windows.Forms.Button();

this.SuspendLayout();

//

// textUser

//

this.textUser.Location = new System.Drawing.Point(8, 16);

this.textUser.Name = "textUser";

this.textUser.PasswordChar = "?";

this.textUser.Size = new System.Drawing.Size(168, 20);

this.textUser.TabIndex = 0;

this.textUser.Text = "";

//

// textPass

//

this.textPass.Location = new System.Drawing.Point(8, 48);

this.textPass.Name = "textPass";

this.textPass.PasswordChar = "*";

this.textPass.Size = new System.Drawing.Size(168, 20);

this.textPass.TabIndex = 1;

this.textPass.Text = "";

//

// label1

//

this.label1.Location = new System.Drawing.Point(192, 16);

this.label1.Name = "label1";

this.label1.Size = new System.Drawing.Size(112, 24);

this.label1.TabIndex = 2;

this.label1.Text = "Username";

//

// label2

//

this.label2.Location = new System.Drawing.Point(192, 48);

this.label2.Name = "label2";

this.label2.Size = new System.Drawing.Size(112, 24);

this.label2.TabIndex = 3;

this.label2.Text = "Password";

//

// btnOK

//

this.btnOK.Anchor = ((System.Windows.Forms.AnchorStyles.Top |

System.Windows.Forms.AnchorStyles.Bottom)

| System.Windows.Forms.AnchorStyles.Left);

this.btnOK.FlatStyle = System.Windows.Forms.FlatStyle.Popup;

this.btnOK.Image =

((System.Drawing.Bitmap)(resources.GetObject("btnOK.Image")));

this.btnOK.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

this.btnOK.Location = new System.Drawing.Point(64, 96);

this.btnOK.Name = "btnOK";

this.btnOK.Size = new System.Drawing.Size(80, 24);

this.btnOK.TabIndex = 4;

this.btnOK.Text = "OK";

this.btnOK.Click += new System.EventHandler(this.btnOK_Click);

//

// btnCancel

//

this.btnCancel.FlatStyle = System.Windows.Forms.FlatStyle.Popup;

this.btnCancel.Image =

((System.Drawing.Bitmap)(resources.GetObject("btnCancel.Image")));

this.btnCancel.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

this.btnCancel.Location = new System.Drawing.Point(200, 96);

this.btnCancel.Name = "btnCancel";

this.btnCancel.TabIndex = 5;

this.btnCancel.Text = "Cancel";

this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);

//

// Form1

//

this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

this.ClientSize = new System.Drawing.Size(344, 133);

this.Controls.AddRange(new System.Windows.Forms.Control[] {

this.btnCancel,

this.btnOK,

this.label2,

this.label1,

this.textPass,

this.textUser});

this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));

this.Name = "Form1";

this.Text = "Validacija";

this.Load += new System.EventHandler(this.Form1_Load);

this.ResumeLayout(false);


}

#endregion


private void txtBoxUser_Validating (object sender,

System.ComponentModel.CancelEventArgs e)

{

TextBox    tb = (TextBox) sender;


if (textUser.Text == "igor") //&& textPass.Text == "igor")

{

tb.Tag = true;

}

ValidateAll();

}


private void txtBoxPass_Validating (object sender,

System.ComponentModel.CancelEventArgs e)

{

TextBox tb = (TextBox) sender;


if (textPass.Text == "igor")

{

tb.Tag = true;

}

else

{

Form4 novaForma = new Form4();

novaForma.Show();


//MessageBox.Show("Pogrešna šifra!");

}

ValidateAll();

}


private void ValidateAll()

{

this.btnOK.Enabled = ((bool)(this.textUser.Tag) &&

(bool)(this.textPass.Tag));

}


private void Form1_Load(object sender, System.EventArgs e)

{


}


private void btnOK_Click(object sender, System.EventArgs e)

{


Roditelj drugaForma = new Roditelj();

drugaForma.Show();


//MessageBox.Show("Pogrešna šifra!");



}



private void txtBoxUser_TextChanged (object sender, System.EventArgs e)

{

TextBox tb = (TextBox) sender;


if (textUser.Text != "igor")

{

tb.Tag = false;

}

ValidateAll();

}


private void txtBoxPass_TextChanged (object sender, System.EventArgs e)

{

TextBox tb = (TextBox) sender;


if (textPass.Text != "igor")

{

tb.Tag = false;

}

ValidateAll();

}


private void btnCancel_Click(object sender, System.EventArgs e)

{

this.Close();

}




}

}

Code:

namespace FormMDIRoditelj_namespace
{
    using System;
    using System.Windows.Forms;
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    public class FormMDIRoditelj : System.Windows.Forms.Form
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public FormMDIRoditelj()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            // 
            // FormMDIRoditelj
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(402, 292);
            this.IsMdiContainer = true;
            this.Name = "FormMDIRoditelj";
            this.Text = "Form1 - MDI roditelj";

        }
        #endregion
    }
}

Code:

namespace FormMDIDijete_namespace
{
    using System;
    using System.Windows.Forms;
    using FormMDIRoditelj_namespace;
    /// <summary>
    /// Summary description for Form2.
    /// </summary>
    public class FormMDIDijete : System.Windows.Forms.Form
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public FormMDIDijete()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            FormMDIRoditelj roditelj = new FormMDIRoditelj();
            this.MdiParent = roditelj;
            roditelj.Show();
            this.Show();
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            // 
            // FormMDIDijete
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(282, 107);
            this.Name = "FormMDIDijete";
            this.Text = "Form2 - MDI dijete";

        }
        #endregion
    }
}

Code:

namespace FormLogin_namespace
{
    using System;
    using System.Windows.Forms;
    /// <summary>
    /// Summary description for Form3.
    /// </summary>
    public class FormLogin : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button btnLogin;
        public System.Windows.Forms.TextBox txtUsername;
        public System.Windows.Forms.TextBox txtPassword;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Button btnCancel;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public FormLogin()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.btnLogin = new System.Windows.Forms.Button();
            this.txtUsername = new System.Windows.Forms.TextBox();
            this.txtPassword = new System.Windows.Forms.TextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.btnCancel = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // btnLogin
            // 
            this.btnLogin.DialogResult = System.Windows.Forms.DialogResult.OK;
            this.btnLogin.Location = new System.Drawing.Point(10, 60);
            this.btnLogin.Name = "btnLogin";
            this.btnLogin.Size = new System.Drawing.Size(85, 30);
            this.btnLogin.TabIndex = 0;
            this.btnLogin.Text = "Login";
            // 
            // txtUsername
            // 
            this.txtUsername.Location = new System.Drawing.Point(75, 10);
            this.txtUsername.Name = "txtUsername";
            this.txtUsername.Size = new System.Drawing.Size(115, 20);
            this.txtUsername.TabIndex = 2;
            this.txtUsername.Text = "";
            // 
            // txtPassword
            // 
            this.txtPassword.Location = new System.Drawing.Point(75, 35);
            this.txtPassword.Name = "txtPassword";
            this.txtPassword.PasswordChar = '*';
            this.txtPassword.Size = new System.Drawing.Size(115, 20);
            this.txtPassword.TabIndex = 3;
            this.txtPassword.Text = "";
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(10, 10);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(60, 20);
            this.label1.TabIndex = 4;
            this.label1.Text = "Username";
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(10, 35);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(60, 20);
            this.label2.TabIndex = 5;
            this.label2.Text = "Password";
            // 
            // btnCancel
            // 
            this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.btnCancel.Location = new System.Drawing.Point(105, 60);
            this.btnCancel.Name = "btnCancel";
            this.btnCancel.Size = new System.Drawing.Size(85, 30);
            this.btnCancel.TabIndex = 6;
            this.btnCancel.Text = "Cancel";
            // 
            // FormLogin
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(197, 97);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.btnCancel,
                                                                          this.label2,
                                                                          this.label1,
                                                                          this.txtPassword,
                                                                          this.txtUsername,
                                                                          this.btnLogin});
            this.Name = "FormLogin";
            this.Text = "Form3";
            this.ResumeLayout(false);

        }
        #endregion


    }
}

Code:

namespace Test_namespace
{
    using System;
    using System.Windows.Forms;
    using FormMDIRoditelj_namespace;
    using FormMDIDijete_namespace;
    using FormLogin_namespace;
    /// <summary>
    /// Summary description for Test.
    /// </summary>
    public class Test
    {
        public static void Main()
        {
            FormLogin login = new FormLogin();
            if (login.ShowDialog() == DialogResult.OK)
            {
                if (login.txtUsername.Text == "korisnik"  &&
                    login.txtPassword.Text == "lozinka")
                {
                    login.Close();
                    Application.Run(new FormMDIDijete());
                }
                else
                {
                    login.Close();
                    MessageBox.Show("Not valid: username/password!", "ERROR!");
                    MessageBox.Show("Hvala na koristenju programa.", "");
                }
            }
            else
            {
                MessageBox.Show("Hvala na koristenju programa.", "");
            }
        }
    }
}