ASP — Forms

HTML Form

<form method="post" action="process.asp">
    <input type="text" name="username">
    <input type="password" name="password">
    <input type="submit" value="Login">
</form>

Get Form Data

<%
Dim username
username = Request.Form("username")

Dim password
password = Request.Form("password")

Response.Write("Username: " & username)
%>

Request.Form vs Request.QueryString

Method	Description
Request.Form	POST data
Request.QueryString	URL parameters

Form Validation

<%
Dim username
username = Request.Form("username")

If username = "" Then
    Response.Write("Username is required")
Else
    Response.Write("Welcome, " & username)
End If
%>

Multiple Values

<select name="colors" multiple>
    <option value="red">Red</option>
    <option value="blue">Blue</option>
    <option value="green">Green</option>
</select>

<%
Dim colors
colors = Request.Form("colors")

Dim color
For Each color In colors
    Response.Write(color & "<br>")
Next
%>

Mini Practice

1. Create an HTML form
2. Get form data
3. Validate input
4. Handle multiple values

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