(a) Using Validation controls in asp.net, the user must submit a value in the textbox otherwise an error will be displayed. You need to fill in the blanks (------ --) below that would create the webform (3marks - 0.5 mark for each blank).

FieldValidator

(b) Write the appropriate HTML code to add into the form above another ASP.net TextBox to convert "Meter" to "KM" (1.5 marks)? Write the appropriate HTML validation control to accept only numbers in the TextBox (1.5 marks)