displaying the name of a logged on user on the index page

 hello goodday. please i need somebody to help show me my error here. this is basically to show  a welcome message [welcome user]on the index page after login in as a registered user of my site. i can achieve this with session but i really want to see this work. i read it in a book. it is not working as i want instead it is displaying my pc's name, instead of showing welcome for the current loggrd in user. put into consideraton that i programmatically created my login controls, my database on sqlserver myself, without asp.net custom login controls. i will be grateful if i can be answered speedily
//this is the label that shows the welcome text
{welcomeLbl.Text = "you are welcome, ";
//user.identity.name+"."; this is suppose to display the name of the current logged in user
welcomeLbl.Text += User.Identity.Name + ".";}

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