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Passing two parameters in CommandParameter in Xamarin Forms

I have defined a model as follows:
public class UserDetails
{
public int Id { get; set; }
public string Username { get; set; }
public string Password { get; set; }
public List<Transport> TransportModel { get; set; }
}
Based on the above model, I have instantiated a list that contains hard coded values for testing purposes.
Further, I am dynamically populating buttons based on the TransportModel values on a XAML page as follows:
StackLayout stack = new StackLayout();
foreach (var t in user.TransportModel)
{
// Here I am looping to access data in the TransportModel
Button btn = new Button();
btn.Text = t.Name;
btn.SetBinding(Button.CommandProperty, new Binding("ShowCommandParameter"));
btn.CommandParameter = user.TransportModel; // if this correct ?
stack.Children.Add(btn);
}
And I have the following ViewModel:
public TransportViewModel()
{
ShowCommandParameter = new Command<UserDetails>(Show);
}
public void Show(UserDetails param)
{
// I want to access properties of TransportModel here..
}
The issue that I am having is that I want to pass two parameters in the CommandParameter. And I want to access these values within the Show method.
Could someone please help me on this ? I'm totally stuck.

since each button only applies to a specific Transport, you want to pass a Transport object as your CommandParameter
foreach (var t in user.TransportModel)
{
...
btn.CommandParameter = t;
...
}
then
public TransportViewModel()
{
ShowCommandParameter = new Command<Transport>(Show);
}
public void Show(Transport param)
{
// param contains the selected Transport
}

Nesting list in model and the viewing and storing data

Sorry if this is a simple question but if I want to have a list inside a model, and later access and set the values of the list?
Say my main model looks like this:
public class StartPageModel : IPageViewModel<StartPage>
{
public IList<ListContent> ListContent { get; set; }
public StartPage CurrentPage { get; set; }
}
public class ListContent
{
public IList<ListElement> ArticleListContent { get; set; }
public IList<ListElement> InsightListContent { get; set; }
}
How can I set the ArticleListContent list to a value by referencing the parent model?
public ActionResult Index(StartPage currentPage)
{
var model = new StartPageModel(currentPage);
model.ListContent.ArticleListContent = GetListContent(currentPage.ArticleCollection);
}
However this returns the error:
IList does not contain a definition for 'ArticleListContent'

I'm not sure you require a collection of ListContent in your StartPageModel, correct me if I'm wrong.
Change
public IList<ListContent> ListContent { get; set; }
to
public ListContent ListContent { get; set; }
And provided ListContent is initialized, your assignment will work.

It's because it's referencing the List of ListContent, not an individual item in that list. Here's some examples:
var model = new StartPageModel(currentPage);
model.ListContent[0].ArticleListContent = GetListContent(currentPage.ArticleCollection); // Access first in list
model.ListContent[1].ArticleListContent = GetListContent(currentPage.ArticleCollection); // Access secondin list
model.ListContent.First().ArticleListContent = GetListContent(currentPage.ArticleCollection); // Access first in list using Linq

How to return the result of a stored procedure into a list in my view model

This is my first question here and I'm new to WPF/MVVM.
What I'm trying to do is display a multi-column listview that holds the results returned from a stored procedure.
I'm doing my best to implement MVVM and this is where I'm having trouble.
I have a model (SL_ID is the PK and not nullable in the database):
public class mJob_Select_OrderList
{
public int SL_ID { get; set; }
public string E32JobNumber { get; set; }
public string E32_CLIENT { get; set; }
public string SL_DESCRIPTION { get; set; }
public string E32_DESCRIPTION { get; set; }
}
and then I have a view model:
public class vmJob_Select : vmMain
{
#region Members
Models.mJob_Select _mJobSelectSettings;
public SLEVEN_CLASS.dbSLEVENDataContext _dc;
#endregion
#region Constructors
public vmJob_Select()
{
_dc = new SLEVEN_CLASS.dbSLEVENDataContext();
_mJobSelectSettings = new Models.mJob_Select { EnvironmentID = 1 };
//EnvironmentList
var dsEnvironmentList = (from el in _dc.vw_EnvironmentLists orderby el.ENV_ID select new mJob_Select_Environment { ENV_ID = el.ENV_ID, Environment = el.Environment, IMAGE_RESOURCE = el.IMAGE_RESOURCE });
EnvironmentList = new ObservableCollection<mJob_Select_Environment>(dsEnvironmentList);
//Orders List
var dsSLEVENOrders = _dc.get_SLORDER_List(SelectedEnvironmentID).ToList();
SelectOrderList = new List<mJob_Select_OrderList>(dsSLEVENOrders);
}
#endregion
#region Properties
public Models.mJob_Select mJobSelectSettings { get { return _mJobSelectSettings; } set { _mJobSelectSettings = value; } }
public int SelectedEnvironmentID { get { return mJobSelectSettings.EnvironmentID; } set { if (mJobSelectSettings.EnvironmentID != value) { mJobSelectSettings.EnvironmentID = value; RaisePropertyChanged("EnvironmentID"); } } }
public ObservableCollection<mJob_Select_Environment> EnvironmentList { get; set; }
public List<mJob_Select_OrderList> SelectOrderList { get; set; }
}
So basically EnvironmentList is pulled from a view in the database and I can populate an ObservableCollection successfully. The SelectedOrderList is the result of a stored procedure and I'm trying to load this result into a list object of some sort.
The error I'm getting is
Cannot convert from 'System.Collections.Generic.List' to 'int'
I was able to implement this successfully in the code behind on the view but I'm trying to adhere to MVVM and making my ViewModel do the work.
using (SLEVEN_CLASS.dbSLEVENDataContext dbSLEVEN = new SLEVEN_CLASS.dbSLEVENDataContext())
{
var dsSLEVENOrders = dbSLEVEN.get_SLORDER_List(intENVID);
lvSlevenJobs.ItemsSource = dsSLEVENOrders;
lvSlevenJobs.SelectedValuePath = "SL_ID";
}
I've been searching and trying to figure this out for awhile now and I've tried to implement some solutions that I've found here and there to no avail. One involved looping through the IResult and adding each row to the model another suggested building a more complex linq query instead of a stored procedure. None of these options are out of the question. Is there a generally accepted method for performing this task?
Thanks in advance to any answers/suggestions you can provide!
//EDIT//
I believe I've found my solution. I was trying to return my SPROC results to a model that I created but when using LINQ a Model is created automatically called Procedure Name + 'Result'.
I declared my list to utilize the 'Result' model like so:
public List<get_SLORDER_ListResult> SelectOrderList { get; set; }
List<get_SLORDER_ListResult> lstSLEVENOrders = _dc.get_SLORDER_List(SelectedEnvironmentID).ToList<get_SLORDER_ListResult>();
SelectOrderList = new List<get_SLORDER_ListResult>(lstSLEVENOrders);
I then bound my ListView to SelectOrderList.

Bind Object Properties to Chart in C#

I have a list of objects:
List<NFutures> futureContracts = new List<NFutures>();
What I would like to do is the following:
Every time I change the value of a object property in the list:
foreach (NFuture fut in futureContracts)
{
if (fut.Name == aName)
{
fut.PriceLast = i.StatusLine.Last;
}
}
The chart will update.
The class definition is...
public class NFuture : NInstrument
{
public double Dtm { get; set; }
public double PriceLast { get; set; }
etc ...
How can this be done in an easy way?

futureContracts.FirstOrDefault(x=>x.Name ==aName).PriceLast = "your Value";

C# Populate DataGrid having ComboBox, CheckBox and TextBox

I've got a DataGrid with 6 columns:
ComboBox;ComboBox;CheckBox;CheckBox;CheckBox;TextBox
I'm trying to populate this DataGrid with values I'm keeping in List of GridLine objects
public class GridLine
{
public string sColumnA { get; set; }
public bool bError { get; set; }
public string sColumnB { get; set; }
public bool bNullableB { get; set; }
public bool bCollateB { get; set; }
public bool bStaticB { get; set; }
public string sStaticB { get; set; }
(...)
}
I've wrote a function that is setting DataGrid last line params and add new line but it is not working correctly - I'm getting only ComboBoxes on last line properly set, anything else:
private void AddLine(GridLine gl)
{
DataGridViewComboBoxCell cellMs = (DataGridViewComboBoxCell)this.Rows[this.Rows.Count - 1].Cells[0];
DataGridViewComboBoxCell cellOra = (DataGridViewComboBoxCell)this.Rows[this.Rows.Count - 1].Cells[1];
DataGridViewCheckBoxCell cellNull = (DataGridViewCheckBoxCell)this.Rows[this.Rows.Count - 1].Cells[2];
DataGridViewCheckBoxCell cellColl = (DataGridViewCheckBoxCell)this.Rows[this.Rows.Count - 1].Cells[3];
DataGridViewCheckBoxCell cellStat = (DataGridViewCheckBoxCell)this.Rows[this.Rows.Count - 1].Cells[4];
DataGridViewTextBoxCell cellStatText = (DataGridViewTextBoxCell)this.Rows[this.Rows.Count - 1].Cells[5];
cellMs.Value = gl.sColumnA;
cellOra.Value = gl.sColumnB;
cellNull.Selected = gl.bNullableB;
cellColl.Selected = gl.bCollateB;
cellStat.Selected = gl.bStaticB;
cellStatText.Value = gl.sStaticB;
this.Rows.Add();
}
I have no idea what I'm doing wrong.
Many thanks

Try creating a binding list http://msdn.microsoft.com/en-us/library/ms132679.aspx of items (GridLine) you want to add to datagridview. Then assign datagrid's property DataSource with that list.
Before you do that you will need to add columns in a designer to datagridview.
More info here: http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.datasource.aspx