validate fields after returning from server

[ash42]

Response.Write("<textField hint='Enter your First Name' label='First name' name='firstname' size='10' value=''/>");
Response.Write("<textField hint='Enter your Surname' label='Surname' name='surname' size='10' value=''/>");
Response.Write("<textField hint='Enter your House number/name' label='House number/name' size='10' value=''/>");
..................... etc etc

I have asp.net code as above - how do i validate fields firstname,surnmame etc ...after returning back from the client ..using HTTP request and Http Response???

Thankyou

[PRR]

You need to use Validation controls for your program.

[Frinavale]

Wow.
You are not using .NET at all right now.
In fact using Response.Write is a horrible idea in your C# or VB.NET code.....

In order to use the validation controls that PRR has suggested you have to actually use ASP.NET elements....you should not use Response.Write like you are.

[ash42]

this is the code i have on page load I would like the data returned from another application and I am accessing the returned data via a querystring ...next task is to validate each field returned ...how do I do this in c#

public partial class AppSuccessfull : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
 
        ApplicationDetails appQueryString = new ApplicationDetails();
        appQueryString.surname = Request.QueryString["surname"];
        appQueryString.firstname = Request.QueryString["firstname"];
        appQueryString.houseno = Request.QueryString["address"];
        appQueryString.street = Request.QueryString["street"];
        string refNo = Request.QueryString["refNo"];
        appQueryString.postcode = Request.QueryString["postcode"];
 
            }
        }
 
public class validate 
 
{
}

[Frinavale]

Well instead of having a class named Validate, call it something like... Person or Contact or something.

Have that class validate the data provided to it.

So you'd have something like:

public partial class AppSuccessfull : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
 
        Contact theContact = new Contact();
        theContact.surname = Request.QueryString["surname"];
        theContact.firstname = Request.QueryString["firstname"];
        theContact.houseno = Request.QueryString["address"];
        theContact.street = Request.QueryString["street"];
        //???? string refNo = Request.QueryString["refNo"];
        theContact.postcode = Request.QueryString["postcode"];
    }
 
    /*...........*/
}
 
private class Contact
{
   private string _surname;
   private string _firstname;
   private string _houseno;
   private string _street;
   private string _postalcode;
 
    public string SurName
    {
        get { return _surname; }
        set { surname = value; }
    }
    public string FirstName
    {
        get { return _surname; }
        set { surname = value; }
    }
    public string HouseNo
    {
        get { return _surname; }
        set { surname = value; }
    }
    public string Street
    {
        get { return _surname; }
        set { surname = value; }
    }
    public string PostalCode
    {
        get { return _surname; }
        set { surname = value; }
    }
 
    public boolean IsValid()
    {
        /*Make sure that all of the information provided is valid here....
          Check to make sure that string lengths are valid etc...
        */
    }
 
}