Slide 1

To read Values from input Html Control

• In Html every values are considering as a string. so first we have to convert a string value as per requirement.

  public void OnPost()
  {
  int length = Int32.Parse(Request.Form["Length"]);
  int width = Int32.Parse(Request.Form["Width"]);
  int TotalArea = length * width;
  this.Result = TotalArea;
  }
  

• First line in OnPost Handler Method represents, getting the value for Length from razor page form and setting value to integer variable 'length'.

Slide 2

• Request.Form is a function of PageModel to get a form

   this.Result = TotalArea;
  

• the above code means selecting an object property from the same class, to access a class in the same class we use 'this' property.

• Will discuss more about ModelBinding in next session.

• Request.Form collections

  • The Form collection retrieves the values of form elements posted to the HTTP request body, with a form using the POST method.
  • The Form collection is indexed by the names of the parameters in the request body.