How to access HTML form input from ASP.NET code behind

by

If you are accessing a plain HTML form, it has to be submitted to the server via a submit button (or via JavaScript post). This usually means that your form definition will look like this (I’m going off of memory – make sure you check the HTML elements are correct):

<form method="POST" action="page.aspx">

    <input id="customerName" name="customerName" type="Text" />
    <input id="customerPhone" name="customerPhone" type="Text" />
    <input value="Save" type="Submit" />

</form>

You should be able to access the customerName and customerPhone data like this:

string n = String.Format("{0}", Request.Form["customerName"]);

If you have method="GET" in the form (not recommended – it messes up your URL space), you will have to access the form data like this:

string n = String.Format("{0}", Request.QueryString["customerName"]);

This of course will only work if the form was ‘Posted’, ‘Submitted’, or done via a ‘Postback’ (i.e., somebody clicked the ‘Save’ button, or this was done programmatically via JavaScript).

Also, keep in mind that accessing these elements in this manner can only be done when you are not using server controls (i.e., runat="server"). With server controls, the id and name are different.

More Related Contents:

  1. System.IndexOutOfRangeException: Cannot find table 0
  2. POST a form array without successful
  3. Reach control from another page. ASP.Net
  4. How can I strip HTML tags from a string in ASP.NET?
  5. How do you convert Html to plain text?
  6. Does page reload ever cause post?
  7. How to submit http form using C#
  8. asp.net: Invalid postback or callback argument
  9. How to get rendered html (processed by Javascript) in WebBrowser control?
  10. Adding your own HtmlHelper in ASP.NET MVC 3
  11. Convert HTML string to image
  12. onchange event for html.dropdownlist
  13. How can I get the CheckBoxList selected values, what I have doesn’t seem to work C#.NET/VisualWebPart
  14. c# asp.net delete last comma [closed]
  15. Finding the variable name passed to a function
  16. The name ‘controlname’ does not exist in the current context
  17. Sharing sessions across applications using the ASP.NET Session State Service
  18. Entity Framework Timeouts
  19. Plus sign in query string
  20. If a folder does not exist, create it
  21. Classes residing in App_Code is not accessible
  22. The instance of entity type cannot be tracked because another instance of this type with the same key is already being tracked
  23. How to not serialize the __type property on JSON objects
  24. The request was aborted: Could not create SSL/TLS secure channel
  25. How can I add option groups in ASP.NET drop down list?
  26. SignalR doesn’t use Session on server
  27. How do I inject ASP.NET 5 (vNext) user-secrets into my own utility class?
  28. How to return XML in ASP.NET?
  29. Block requests after multiple unsuccessful logins
  30. iTextSharp international text

Leave a Comment