Asp.net MVC3 Matching VB.net Transfer Model

I am new to MVC, and although I tried to follow best practices, I believe that I don’t understand some of the basics either

-a. Use of models and viewing models respectively -b. Transferring models to the controller for verification purposes.

The general goal of my program is to select a stored procedure from the list of stored procedures, create a form in which the user can fill in all the relevant input variables, and then execute this stored procedure. The tool is intended for non-technical people, so in the end I will have to do a big input check.

Thus, I have four models: A Script Model, Parameter Model, Enum Parameter Model and Request Model, and two viewing models: a paramviewmodel that generates a fillable form, and a scriptview model that creates a list filled with possible Script options. I use a pre-written database system to populate my view modes in the init method in my controller (which I'm not sure if this is the right way to do this?).

The presented models are as follows:

Imports System
Imports System.Collections.Generic

Public Class ScriptViewModel

    Public Property SelectedItemId As Integer
    Public Property Scripts As DataTable
    Public Property ScriptList As List(Of ScriptModel)

    Sub InitScriptData()
        ' Fills the data from an outside database.  
        ' And fills out the properties above.  Does nothing else
    End Sub

End Class

Other

Imports System
Imports System.Collections.Generic

Public Class ParamViewModel

    Public Property Params As DataTable
    Public Property ParamEnums As DataTable
    Public Property ParameterList As List(Of ParameterModel)
    Public Property ParamEnumList As List(Of ParamEnumModel)
    Public Property ParamEnumDictionary As Dictionary(Of Integer, List(Of ParamEnumModel))

    Sub InitParamData(ByVal Script_Index As String)
        ' Uses an outside database
        ' Fills out all the above variables    
    End Sub
End Class

Their related views look like this:

Script:

@ModelType Scripter.ScriptViewModel
@Html.ValidationSummary("Please correct the errors and try again.")
@Using (Html.BeginForm("ParamChoice", "Parameter", FormMethod.Post))
    @<div>
    @Html.ListBox("ScriptListBox", New SelectList(Model.ScriptList, "Script_Index", "CustomerScriptName"), New With {.class = "LargeListBox", .title = "LargeListBox"})
    </div>
    @<input type="submit" value="Execute Script" />
End Using 

ParamChoice:

@ModelType Scripter.ParamViewModel
@Code
    ViewData("Title") = "ParamChoice"
End Code

<h2>ParamChoice</h2>

<!-- Helper Method defined in App_Code that creates a form with a dynamic number of fields of appropriate input types -->
@HelperMethods.CreateVariableInputParameterFields(Model.ParameterList, Model.ParamEnumDictionary)

Said Helper (this is where my main confusion lies) (Note that inheriting helperpage refers to a class that allows me to use htmlhelpers in @helper in app_code)

@inherits Scripter.HelperPage

@Imports System.Web.Mvc
@Imports System.Web.Mvc.Html

@helper CreateVariableInputParameterFields(ByVal ParamList As List(Of Scripter.ParameterModel), ByVal EnumDictionary As Dictionary(Of Integer, List(Of Scripter.ParamEnumModel)))
    Dim item As Scripter.ParameterModel

    @Html.ValidationSummary("Please correct the errors and try again.")

    Using (Html.BeginForm("QueryServer", "Query", FormMethod.Post))

    Dim iterator As Integer = 0
    Dim ParamValue(ParamList.Count) As String
    Dim ParamName(ParamList.Count) As String
    Dim ParamType(ParamList.Count) As String

    For Each item In ParamList
        If (String.Compare(item.ParamType, "Int") = 0 Or String.Compare(item.ParamType, "String") = 0) Then
            @<br />
            @Html.Label(item.ParamName)
            @Html.TextBox("ParamValue", Nothing, New With {.class = "text-box", .id = CStr(iterator)})
            @Html.Hidden("ParamName", item.ParamName, New With {.id = CStr(iterator)})
            @Html.Hidden("ParamType", item.ParamType, New With {.id = CStr(iterator)})
            iterator += 1
        ElseIf (String.Compare(item.ParamType.ToString, "Enum") = 0) Then
            Dim tlist = EnumDictionary.Item(item.Param_Index)
            @<br />
            @Html.Label("label", item.ParamName, New With {.class = "display-label"})
            @Html.DropDownList("ParamValue", New SelectList(tlist, "EnumValue", "EnumValue"), New With {.id = CStr(iterator)})
            @Html.Hidden("ParamName", item.ParamName, New With {.id = CStr(iterator)})
            @Html.Hidden("ParamType", item.ParamType, New With {.id = CStr(iterator)})
            iterator += 1
        Else
            @<br />
            @Html.Label("label", item.ParamName, New With {.class = "display-label"})
            @Html.CheckBox("ParamValue", Nothing, New With {.id = CStr(iterator)})
            @Html.Hidden("ParamName", item.ParamName, New With {.id = CStr(iterator)})
            @Html.Hidden("ParamType", item.ParamType, New With {.id = CStr(iterator)})
            iterator += 1
        End If
    Next

    @Html.Hidden("Script_Index", ParamList.Item(0).Script_Index)

    @<div>
        <input type="submit" value="Query Server"/>
    </div>
    Html.EndForm()
End Using
End helper

Script Controller as an example of what I was doing:

Namespace Scripter
    Public Class ScriptController
        Inherits System.Web.Mvc.Controller

        Function Index() As ActionResult
            Dim Test As New ScriptViewModel
            Test.InitScriptData()

            Return View(Test)
        End Function

    End Class
End Namespace

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