Database handle

I am new in C#.
How can I connect witha sql server database from C# when a form is loaded.
How can I add new row in the database table when I click an button
from the form.
Please help me.

Rajib

http://www.csharp-station.com/Tutori.../Lesson01.aspx

Thank you for giving that useful link.
I am trying with your suggession. It is good.
But I am in some trouble to handle it.
I do not know when I write code like the tutorial my program says an error!
It says that System.Data.SqlClient does not contain conn.close();
Please help me.
I am really new in this environment. and I am trying to save data from a form to a database table in SQL.

Rajib

sorry about my post i'm still a newbie here, but maybe this would help.

VB Code:

SqlConnection conn = new SqlConnection("user id=sa;password=password;initial catalog=northwind");
        private void btnok_click(object sender, System.EventArgs e)
        {
            try
            {
                conn.Open();
                string cmdtext = "insert into student(Idno,Lastname,Firstname)values('" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "')";
                SqlCommand sqlCom = new SqlCommand(cmdtext,conn);
                sqlCom.ExecuteNonQuery();
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            finally
            {
                conn.Close();
            }
        }

:afrog:

Show the erronous code if you still can't get it to work .