KEYPRESS EVENT IN C#

private void txt1_KeyPress(object sender, KeyPressEventArgs e)
{

if (e.KeyChar == (char)Keys.Enter)

{

//do something

}
}

CALCULATION IN TEXTBOX USING Convert.ToInt32 and int.parse

                                USING Convert.ToInt32

private void button1_Click(object sender, EventArgs e)
{
int value1 = Convert.ToInt32(this.textBox1.Text);

int value2 = Convert.ToInt32(this.textBox2.Text);

int value3 = Convert.ToInt32(this.textBox3.Text);

int value4 = (value2-value1) * value3;

 this.textBox4.Text = value4.ToString();

 }

USING  int.Parse

private void button1_Click(object sender, EventArgs e)
{

int value1 =(textBox1.Text);

int value2 = int.Parse(textBox2.Text);

int value3 = int.Parse(label1.Text);

intvalue4 = (value2-value1) * value3;

textBox4.Text = value4.ToString();
}

COOKIES IN ASP.NET

protected void Page_Load(object sender, EventArgs e)
{

TextBox1.Text = "Ajith";
TextBox2.Text = "bmw";
HttpCookie usercars = Request.HttpCookie["favouritecar"];
if(usecookie == null)
{

HttpCookie usecar = new HttpCookie("favouritecar");
 usecar["name"] = TextBox1.Text.ToString();
 usecar["car"] = TextBox2.Text.ToString();
 usecar.Expires.DateTime.Now.AddDays(1);
Response.Cookie.Add(usecar);

}
else
{

String name =usercars["name"];
String car = usercars["car"];
Label1.Text =  "hi" + name + "is using" +car ;

}
}
}

COUNTING CLICK USING VIEWSTATE

protected void Button1_Click(object sender, EventArgs e)
    {
int click = 1;
if(ViewState["clickcount"] == nul)
{
 click = 1;
}
else
{
click = (int)ViewState["clickcount"] + 1;
}
ViewState["clickcount] = click;
Label1.Text = "Buttonclick" + click + "times";
}

BASIC MOTION USING FLASH

      Open flash --> open file and select new flash document --> Select or open a picture 

 -->Right click at the starting of the time frame --> select Insert keyframe 

--> Similarly right click at any second of the time frame as ending and select Insert

      keyframe --> Move the picture --> Now right click at the starting of the time frame and 

     Create Motion Tween--> Finally press Ctrl Enter...

      The picture will move from one place to another as we moved..