Develop Reference

How to copy List<MapElement> by value and not by reference?

I'm attempting to copy a List<Windows.UI.Xaml.Controls.Maps.MapElement> but have so far only managed to copy the reference. Can anyone offer a way to do this without creating the original MapIcon object again.
I now understand why the methods i've attempted don't work, but i can't find a way around it.
public void MyTestFunction(BasicGeoposition nPosition)
{
List<MapElement> MyLandmarks = new List<MapElement>();
Geopoint nPoint = new Geopoint(nPosition, AltitudeReferenceSystem.Ellipsoid);
var needleIcon = new MapIcon //has base class MapElement
{
Location = nPoint,
NormalizedAnchorPoint = new Windows.Foundation.Point(0.5, 0.5),
ZIndex = 0,
Title = "Point 1"
};
MyLandmarks.Add(needleIcon);
// Copy Mylandmarks by value
// Attempt 1 - copies reference
// copyOfMapElements = new List<MapElement>();
// copyOfMapElements = MyLandmarks;
//
// Attempt 2 - copies reference
copyOfMapElements = new List<MapElement>(MyLandmarks);
}

You can use LINQ to do that:
copyOfMapElements = MyLandmarks.Select(l => new MapIcon{ Location = l.Location,
NormalizedAnchorPoint = l.NormalizedAnchorPoint,
ZIndex = l.ZIndex,
Title = l.Title }).ToList();
Update:
The above solution assumes that all list elements of type MapIcon only, but if you need more generic solution to handle all MapElement derived types then you can used serialization or reflection.
Check this answer for JSON serialization: https://stackoverflow.com/a/55831822/4518630
copyOfMapElements = JsonSerializer.Deserialize<List<MapElement>>(JsonSerializer.Serialize(list));

Simple answer with only MapIcon items in the list:
copyOfMapElements = MyLandmarks.ConvertAll(lm => new MapIcon {
Location = lm.Location,
NormalizedAnchorPoint = lm.NormalizedAnchorPoint,
ZIndex = lm.ZIndex,
Title = lm.Title
});
But since MapIcon is derived from MapElement class and MyLandmarks list holds MapElement and not MapIcon which has its own set of properties you cannot use the example above (kinda weird there's no ICloneable interface implemented for these classes), so I'd probably check for the type of the element and create new instance accordingly.

VB WPF to C# WPF

I'm attempting to move from using VB WPF to C# WPF, What I have attempted so far is using an online converter because of the amount of code I have. The problem being that I have come into some troubles understanding some errors presented and being a beginner in C# I'm a little lost.
The code below is what I'm currently using with standard VB WPF and work perfectly fine and a copy of what the c# converter changes it into. (Note I have added Bing Maps WPF Reference to both VB and C#)
Private Sub Aberdeen() Handles BTNCounty.Click
If TXTCounty.Text = "Aberdeen" Then
Dim CountyLocation(2) As Microsoft.Maps.MapControl.WPF.Location
CountyLocation(0) = New Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584)
CountyLocation(1) = New Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584)
CountyLocation(2) = New Microsoft.Maps.MapControl.WPF.Location(57.124838, -2.0991633)
Dim names = New String() {"Aberdeen Central", "Aberdeen Lochnagar", "Aberdeen Kincorth"}
For index = 0 To CountyLocation.Length - 1
Dim Pin = New Microsoft.Maps.MapControl.WPF.Pushpin()
Dim CoordinateTip = New ToolTip()
CoordinateTip.Content = names(index)
Pin.Location = CountyLocation(index)
Pin.ToolTip = CoordinateTip
BingMap.Children.Add(Pin)
Next
End If
End Sub
Below is the example of the converted code into c#
private void Aberdeen()
{
if (TXTCounty.Text == "Aberdeen") {
Microsoft.Maps.MapControl.WPF.Location[] CountyLocation = new Microsoft.Maps.MapControl.WPF.Location[3];
CountyLocation(0) = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation(1) = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation(2) = new Microsoft.Maps.MapControl.WPF.Location(57.124838, -2.0991633);
dynamic names = new string[] {
"Aberdeen Central",
"Aberdeen Lochnagar",
"\tAberdeen Kincorth"
};
for (index = 0; index <= CountyLocation.Length - 1; index++) {
dynamic Pin = new Microsoft.Maps.MapControl.WPF.Pushpin();
dynamic CoordinateTip = new ToolTip();
CoordinateTip.Content = names(index);
Pin.Location = CountyLocation(index);
Pin.ToolTip = CoordinateTip;
BingMap.Children.Add(Pin);
}
}
}
I recieve 3 errors which I was wondering if you could tell me what they mean and how to resolve the issue?
CountyLocation is a variable but used like a method?
2 The name index does not exist in the current context?
3 System.Windows.FrameworkElement.ToolTip is a property but is used like a type?
Any help would be much appreciated as this very much foreign territory for me.

Please see the answers inline.
The main issue is that the converter has converted all your type inference calls (Dim variable = ...) to dynamics, which is incorrect. You should use var for type inference.
private void Aberdeen()
{
if (TXTCounty.Text == "Aberdeen") {
Microsoft.Maps.MapControl.WPF.Location[] CountyLocation = new Microsoft.Maps.MapControl.WPF.Location[3];
// Error 1: Setting array variables is done using square brackets, otherwise it's considered a method invocation
CountyLocation[0] = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation[1] = new Microsoft.Maps.MapControl.WPF.Location(57.143652, -2.1056584);
CountyLocation[2] = new Microsoft.Maps.MapControl.WPF.Location(57.124838, -2.0991633);
// extra: you don't need dynamic here, just var will do
var names = new string[] {
"Aberdeen Central",
"Aberdeen Lochnagar",
"\tAberdeen Kincorth"
};
// Error 2: you need to declare the index variable (added var)
for (var index = 0; index <= CountyLocation.Length - 1; index++) {
// Error 3: don't need dynamic here
var Pin = new Microsoft.Maps.MapControl.WPF.Pushpin();
// don't need dynamic here
var CoordinateTip = new ToolTip();
// Same as error 1: Array access is done with square brackets
CoordinateTip.Content = names[index];
// Same as error 1: Array access is done with square brackets
Pin.Location = CountyLocation[index];
Pin.ToolTip = CoordinateTip;
BingMap.Children.Add(Pin);
}
}
}

Difference of coding in vb.net and C# issue

Guys I am working with an API integration project in vb.net. Result from API is returned in XML format and I have been provided with some some of the classes which help me to navigate through xml. It's one of the class is WSGetFareQuoteRequest which has many properties. And one of its properties is Result which is defined in the integration document as:
Response Description
Structure of WSGetFareQuoteResponse is as follows:
Field Name DataType Remarks
Result* WSResult This result will
comprise of the new
fare(if any of the
component of fare
gets updated),
otherwise it will
remain the same.
Status WSStatus It will be having the
status or error
information.
When I asked API team regarding the initialisation of this result property of this object they provided me c# code as shown below :
WSGetFareQuoteRequest wsFareQuoteRequest = new WSGetFareQuoteRequest();
WSGetFareQuoteResponse wsFareQuoteResponse = new WSGetFareQuoteResponse();
int nor = 1;
if (searchResponse.Result != null && searchResponse.Result.Length 0 &&
objResult[i].IsLcc)
{
wsFareQuoteRequest.Result = new WSResult[nor];
wsFareQuoteRequest.Result[0] = new WSResult();
wsFareQuoteRequest.Result[0] = objResult[i];
wsFareQuoteRequest.SessionId = searchResponse.SessionId;
wsFareQuoteResponse = bApi.GetFareQuote(wsFareQuoteRequest);
Now my question is that I am doing the project in vb.net.I tried its vb.net equivalent it is showing me error at first line of object creation of Result property.I tried its vb.net equivalent as:
wsFareQuoteRequest.Result = New WSResult(nor)
'Only above line is creating error as Too many arguments to Pub Sub New'
wsFareQuoteRequest.Result(0) = New WSResult()
wsFareQuoteRequest.Result(0) = searchresponse.Result(i)
wsFareQuoteRequest.SessionId = searchresponse.SessionId
wsFareQuoteResponse = bapi.GetFareQuote(wsFareQuoteRequest)

Arrays in Visual Basic > Creating an Array
cargoWeights = New Double(10) {}
atmospherePressures = New Short(2, 2, 4, 10) {}
inquiriesByYearMonthDay = New Byte(20)()() {}
and in your case it would be:
wsFareQuoteRequest.Result = New WSResult(nor) {}
you are missing the {} at the end.

Pass in an array of PaymentDetailsItemType to PayPalAPI

I am using the PayPal sandbox in ASP.Net C# 4.0. I added the following web reference:
https://www.paypalobjects.com/wsdl/PayPalSvc.wsdl
If i have 1 item (gimme 2 t-shirts please) i can pass it to the PayPal object and complete my transactions with no problems whatsoever:
var item = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType
{
Quantity = 2, //etc...etc
};
var paymentDetails = new PayPalAPIHelper.PayPalWS.PaymentDetailsType();
paymentDetails.PaymentDetailsItem = new PaymentDetailsItemType[]{item};
Now my dilemma is when a customer wants different items (1 t-shirt, 1 pair of pants). Now i need multiple PaymentDetailsItemType objects to pass to the paymentDetails object. I tried this:
//now i have an array of different items
var items = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[3];
items[0].Description = "T-shirt";
items[1].Description = "Jeans";
paymentDetails.PaymentDetailsItem = new PaymentDetailsItemType[]{items};
I get this error:
Cannot implicitly convert type 'PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[]'
to 'PayPalAPIHelper.PayPalWS.PaymentDetailsItemType'
I can do this and it compiles:
paymentDetails.PaymentDetailsItem = new PaymentDetailsItemType[]{items[0],items[1]};
But when I run it, i get Data type '' mismatch in element 'Quantity' when i call the PayPal service:
PayPalAPIHelper.PayPalWS.PaymentDetailsType paymentDetails = new PayPalAPIHelper.PayPalWS.PaymentDetailsType();
paymentDetails.PaymentDetailsItem = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[] { items[0],items[1] };
reqDetails.PaymentDetails = new PayPalAPIHelper.PayPalWS.PaymentDetailsType[] { paymentDetails };
PayPalAPIHelper.PayPalWS.SetExpressCheckoutReq req = new PayPalAPIHelper.PayPalWS.SetExpressCheckoutReq()
{
SetExpressCheckoutRequest = new PayPalAPIHelper.PayPalWS.SetExpressCheckoutRequestType()
{
Version = Version,
SetExpressCheckoutRequestDetails = reqDetails
}
};
// query PayPal and get token
//error occurs here
PayPalAPIHelper.PayPalWS.SetExpressCheckoutResponseType resp = BuildPayPalWebservice().SetExpressCheckout(req); //this is where the error occurs
How do i pass multiple types to the PayPal API web service so the user can order different items? Thanks in advance

First, you already have an array, so it makes no sense to create a new one just for the sake of assignment into paymentDetails.PaymentDetailsItem:
var items = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[3];
…
paymentDetails.PaymentDetailsItem = items; // this is wrong: new PaymentDetailsItemType[]{items};
By writing new PaymentDetailsItemType[]{items} you create a new array and try to initialize its first item (of type PaymentDetailsItemType) with the contents of another array items (of type PaymentDetailsItemType[] — hence incompatible).
Second, make sure you fill all required properties for all items in the array. Most likely, in your example of one t-shirt and one jeans you should do:
items[0].Description = "T-shirt";
items[0].Quantity = 1;
items[1].Description = "Jeans";
items[1].Quantity = 1;

reflection with stacktrace / stackframe to get both methods name and parameters

while writing the question subject I came across
some other allmost related post ...leading to MSDN
http://msdn.microsoft.com/en-us/library/system.reflection.parameterinfo.aspx
but i couldn't manage to extract the bit of code i needed
i just learnd how to get method name with a helper method based on st and sf as following :
public void setLogView(View ViewMode)
{
AAdToAppLog();
Lview_AH_AutomationLog.Sorting = SortOrder.Ascending;
ColumnHeader ColHeadRowNo = new ColumnHeader();
ColumnHeader ColHeadFunction = new ColumnHeader();
ColumnHeader ColHeadContent = new ColumnHeader();
ColumnHeader ColHeadTime = new ColumnHeader();
Lview_AH_AutomationLog.View = ViewMode;
Lview_AH_AutomationLog.Columns.Add(ColHeadRowNo);
Lview_AH_AutomationLog.Columns.Add(ColHeadFunction);
Lview_AH_AutomationLog.Columns.Add(ColHeadContent);
Lview_AH_AutomationLog.Columns.Add(ColHeadTime);
ColHeadRowNo.Text = "#";
ColHeadFunction.Text = "Function Name";
ColHeadContent.Text = "Content";
ColHeadTime.Text = "Time";
ColHeadRowNo.Width = 45;
ColHeadFunction.Width = 150;
ColHeadContent.Width = 150;
ColHeadTime.Width = 100;
}
public void AAdToAppLog(string FunctionOutPut = "N/A")
{
string t = DateTime.Now.ToString("mm:ss.ff");
string h = DateTime.Now.ToString("HH");
ListViewItem FirstCell= new ListViewItem();
FirstCell.Text =h+":" +pre0Tosingle_9(LogCounter.ToString());//Another helper puts 0 infront <=9 digits
Lview_AH_AutomationLog.Items.Insert(0, FirstCell);
StackTrace st = new StackTrace();
StackFrame sf = st.GetFrame(1);
string FunctionName = sf.GetMethod().ToString().Replace("Void", "").Replace("System.Windows.Forms.", "");
FirstCell.SubItems.Add(FunctionName);
FirstCell.SubItems.Add(FunctionOutPut);
FirstCell.SubItems.Add(t);
LogCounter++;
}
so in every method i want i just put the
AddToAppLog()
that method contains my call to AddToAppLog() and then reports(Via ListView) the name of method and i just added the time of the call.
there's two things i would like to address in this post , about my implementation of that helper metod :
the "FunctionName" i recive from sf.GetMethod is nice that it throws the type of the Parameter of a given Method i liked the idea , only that it is containing parameter.type's Father + Grandfather + Great-Grandfather, but i would like only the bottom Type :
System.Windows.Forms.View
this is one of the shortest (: and i tried to get to View by it self via playing with .Replace()
so is there anothere way to strip it down or actually another method in same family that extract it the way i mentiond above or i could use a list containing every possible most-used types and do a foreach with stringReplace?
and more importently , how do i get the Method(parameterName) as well ?
thanks alot in advance !!
can someone Show An easy to comprehend , Simple syntax Example
of getting parameters name ?

The crux of this is the line that involves sf.GetMethod(); if you instead store that:
var method = sf.GetMethod();
string name = method.Name;
var parameters = method.GetParameters();
you have access to the full signature, and note that the .Name is just the simple name - not the full declaring type-name, etc. You can of course access method.DeclaringType.Name if you want more context. Note that you can only get the declaration of the parameters; you can't get their values via any normal mechanism.
However!!! I will also observe that all this has a performance cost associated with reflection and stack-walking. If you have the C# 5 compiler, you may prefer:
public void AAdToAppLog([CallerMemberName] string callerName = "")
{ ... }
which means that the compiler will supply the name of the caller voluntarily (as a constant geneated in the IL) - no need to either supply it, or go walking the stack to figure it out. You cannot, however, get the parameters like this.