C#

...<br />
<br />
public string Username<br />
{<br />
    get {return textBox1.Text}<br />
}<br />
...

LogonForm oForm = new LogonForm();<br />
if( oForm.ShowDialog() == DialogResult.OK )<br />
{<br />
    //Logon success<br />
    lbluser.Text = oForm.Username<br />
}<br />
else<br />
{<br />
    //Logon failed<br />
}

using(LogonForm oForm = new LogonForm())
{
    if( oForm.ShowDialog() == DialogResult.OK )
    {
        //Logon success
        lbluser.Text = oForm.Username
    }
    else
    {
        //Logon failed
    }
}

public partial class Logon : Form
    {
        public Logon()
        {
            InitializeComponent();
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Validate the Username and Password

            //Create an Instance of the Mainform
            NEF frm = new NEF(textBox1.Text);

            frm.ShowDialog();
            Application.Exit();
        }
    }

public partial class NEF: Form
{
 public NEF(string username)
 {
   lblUserName.Text = username;
 }
}

public partial class NEF:Form
{
 public NEF()
 {

 }

 private void FormLoad(object Sender, EventArgs e)
 {
   Logon frm = new Logon();
   if (frm.ShowDialog() == DialogResult.OK)
   {
     this.lblUserName = frm.textBox1.Text;
   }
 }
}

public partial class Logon : Form
    {
        


        public Logon()
        {
            InitializeComponent();
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Validate the Username and Password
            if (textBox1.Text == "maphanga" && textBox2.Text == "marsha" 
                || textBox1.Text == "nkosi" && textBox2.Text == "mdu" 
                || textBox1.Text == "carrim" && textBox2.Text == "allerece" 
                || textBox1.Text == "raphela" && textBox2.Text == "rachel" 
                || textBox1.Text == "mazibuko" && textBox2.Text == "zoliswa")
            {
                this.DialogResult = DialogResult.OK;
            }
            else MessageBox.Show("Invalid username and or password supplied");
            
            //Label Captures the username from textBox1
            lbluser.Text = textBox1.Text; 
        }
    }

dataGridView1.Rows.Add(textBox1.Text);

Trustapple wrote:

also any urls that will explain the basic datagrid usage will be good

Trustapple wrote:

1>what are the different ways to call a function in C#?

Trustapple wrote:

2>how to declare a function with parameters?

Trustapple wrote:

3>how to call a function with parameters?

Trustapple wrote:

4>MOST IMP:how to return a value form a function?