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Assign string[] array field to another array field of same type c#

I have two classes defined in my solution
public class Registration {
[...]
public list<Account> Accounts {get; set;}
}
public class Account {
[...]
public string Code { get; set; }
public string Name { get; set; }
public string Address { get; set; }
}
In the web service that I am consuming, the following class definitions are available
public partial class VendReg {
[...]
private Payment_Details[] requestDetailsField;
[System.Xml.Serialization.XmlArrayItemAttribute(IsNullable=false)]
public Payment_Details[] RequestDetails {
get {
return this.requestDetailsField;
}
set {
this.requestDetailsField = value;
}
}
}
public partial class Payment_Details {
private string bk_CodeField;
private string bk_NameField;
private string bk_AddressField;
public string Bk_Code {
get {
return this.bk_CodeField;
}
set {
this.bk_CodeField = value;
}
}
public string Bk_Name {
get {
return this.bk_NameField;
}
set {
this.bk_NameField = value;
}
}
public string Bk_Address {
get {
return this.bk_AddressField;
}
set {
this.bk_AddressField = value;
}
}
}
I want to assign Account to Request Details which is an array of Payment_Details. I tried this code below
vendReg.RequestDetails = registration.Accounts.Cast<Payment_Details>().ToArray();
I got invalid cast exception: Unable to cast object of type 'Account' to type 'Payment_Details'
Please guide on what I am not doing right

You need to convert this yourself (or you can look into things like Automapper)
vendReg.RequestDetails = registration.Accounts.Select(acc =>
new Payment_Details {
Bk_Code = acc.Code,
Bk_Name = acc.Name,
Bk_Address = acc.Address
}).ToArray();

Issue with C# get and set properties for a List Collection

I need a seperate class where I want to add to some Lists anytime I set a new value. Using _name.Add(value) within the set method doesn't work.
I tried the following
public class XMLInformation
{
public String BusType
{
get
{
return SubBusType.LastOrDefault();
}
set
{
SubBusType.Add(value);
}
}
public List<string> SubBusType { get; set; }
}
I use it like this:
public STARC.GlobalVariables.XMLInformation XMLInformation = new STARC.GlobalVariables.XMLInformation();
XMLInformation.BusType = "Test";
now i get an error message (sorry error is partly in geeman)
ISSUE
What am I doing wrong?

It can solve your issue. List is not initialized and you are using it. so initialize it first and then use.
public class XMLInformation
{
public String BusType
{
get
{
return SubBusType == null ? null: SubBusType.LastOrDefault();
}
set
{
if (SubBusType == null)
SubBusType = new List<string>();
SubBusType.Add(value);
}
}
public List<string> SubBusType { get; set; }
}
Or
public class XMLInformation
{
public String BusType
{
get
{
return SubBusType.LastOrDefault();
}
set
{
SubBusType.Add(value);
}
}
public List<string> SubBusType { get; set; } = new List<string>();
}

You have to Initialize the SubBusType object because at starting it will be null.
You can do either by creating in the constructor like below
public XMLInformation()
{
SubBusType = new List<string>();
}
or initiate on declaring the SubType itself like below.
public List<string> SubBusType { get; set; } = new List<string>();

Deserialize my JSOn and bind to list in C# UWP

My Service returns a JSON like below, I want to Parse this and bind category_name to my list, how to do this in C#, UWP apps.
Iam trying to Deserialize this in this way
var content_resp = await response.Content.ReadAsStringAsync();
content_resp = "{ \"root\": " + content_resp.Trim().TrimStart('{').TrimEnd('}') + " }";
var xmlProducts = JsonConvert.DeserializeXNode(content_resp);
var xmlProductNodes = xmlProducts.DescendantNodes();
foreach (XElement xmlProduct in xmlProductNodes)
{
Places pl = new Places();
var node = xmlProducts.Element("category_parent").Value;
pl.category_name = xmlProducts.Element("category_name").Value;
}
}
catch (Exception ex)
{
//throw or return an appropriate response/exception
}
when the debuger comes at this line
var xmlProducts = JsonConvert.DeserializeXNode(content_resp);
it is giving an error like
"This operation would create an incorrectly structured document."

The easiest way that I have found is to use Newtonsoft.Json
Firstly you should create class with data equal to your JSON:
public class AppsData
{
private string _category_id;
private string _category_name;
public string category_id
{
get { return _category_id; }
set { _category_id = value; }
}
public string category_name
{
get { return _category_name; }
set { _category_name = value; }
}
}
Then you can create some helper class:
static class JSONhelper
{
public static IList<T> DeserializeToList<T>(string jsonString)
{
var array = Newtonsoft.Json.Linq.JArray.Parse(jsonString);
IList<T> objectsList = new List<T>();
foreach (var item in array)
{
try
{
objectsList.Add(item.ToObject<T>());
}
catch { }
}
return objectsList;
}
}
Then create instance of List
IList<AppsData> appsdata;
and try to deserialize:
appsdata = JSONhelper.DeserializeToList<AppsData>(stringWithJSON);

If there is no reason to deserialize to XML you can do the following:
Create the class to parse
public class Product
{
public string category_id { get; set; }
[JsonProperty("0")]
public string Zero { get; set; }
public string category_name { get; set; }
[JsonProperty("1")]
public string One { get; set; }
public string category_details { get; set; }
[JsonProperty("2")]
public string Two { get; set; }
public string category_link { get; set; }
[JsonProperty("3")]
public string Three { get; set; }
}
And then
var products = JsonConvert.DeserializeObject<IList<Product>>(your json);

list<classtype> model update in C# using linq

I have a model structure as illustrate below.
public class GuideLineSectionsViewModel
{
public GuideLineSectionsViewModel()
{
SectionsSet = new List<SectionViewModel>();
}
public string Title { get; set; }
public List<SectionViewModel> SectionsSet { get; set; }
}
public class SectionViewModel
{
public SectionViewModel()
{
SectionsSet = new List<SectionViewModel>();
QuestionsSet = new List<QuestionViewModel>();
ProblemsSet = new List<ProblemViewModel>();
GoalsSet = new List<GoalViewModel>();
BarriersSet = new List<BarriersViewModel>();
QuestionReferencesSet = new List<QuestionReferenceViewModel>();
}
public string Heading { get; set; }
public List<SectionViewModel> SectionsSet { get; set; }
public List<QuestionViewModel> QuestionsSet { get; set; }
public List<ProblemViewModel> ProblemsSet { get; set; }
public List<GoalViewModel> GoalsSet { get; set; }
public List<BarriersViewModel> BarriersSet { get; set; }
public List<QuestionReferenceViewModel> QuestionReferencesSet { get; set; }
}
public class ProblemViewModel
{
public string Text { get; set; }
public bool Identified { get; set; }
public List<GoalViewModel> GoalsSet { get; set; }
public List<QuestionReferenceViewModel> QuestionReferencesSet { get; set; }
}
Now Based on the condition I need to update the every list value of the ProblemViewModel using linq.Below is the condition
public GuideLineSectionsViewModel FindGuidelineType(GuideLineSectionsViewModel guidelineSectionModel)
{
//GuideLineSectionsViewModel result = new GuideLineSectionsViewModel();
string title = guidelineSectionModel.Title;
int count = Regex.Matches(title, "Low Intensity").Count;
if (count > 0)
{
}
return guidelineSectionModel;
}
The guidelineSectionModel.Title will contain the text as "some value : Low Intensity". So i used the regx to filter the text. Is there other way i can directly check the condition in linq. and update the model model.
I want to update list value of ProblemViewModelmodel property value public bool Identified to "true"
Currently it contain only False value.
Please can anyone help me to solve the issue.

Have a look at following method. I could not put LINQ but I think this answer can solve your purpose. Again Some classes structure are missing in your question so you may need to put that in following method.
GuideLineSectionsViewModel FindGuidelineType(GuideLineSectionsViewModel guidelineSectionModel)
{
//GuideLineSectionsViewModel result = new GuideLineSectionsViewModel();
string title = guidelineSectionModel.Title;
int count = Regex.Matches(title, "Low Intensity").Count;
if (count > 0)
{
foreach(SectionViewModel svm in guidelineSectionModel.SectionsSet)
{
foreach(ProblemViewModel pvm in svm.ProblemsSet)
{
pvm.Identified = true;
}
}
}
return guidelineSectionModel;
}

If you prefer LINQ:
if(guideLine.Title.Contains("Low Intensity"))
{
guideLine.SectionsSet.ForEach(s => s.ProblemsSet.ForEach(ps => ps.Identified = true));
}
Note: please read this answer https://stackoverflow.com/a/2962689/1525637 due to possible performance problems with the Regex.Matches, you should use String.Contains instead.

Adding model object to list fails

I have a model class like this
namespace ConnectBLL.DTO.Response
{
public class CategorySettings
{
public bool NeedsLoginToViewLongText { get; set; }
public bool NeedsLoginToViewAnyDetails { get; set; }
public bool ShowAttachment { get; set; }
public string CategoryPageID { get; set; }
public string TpUrl { get; set; }
}
public class CategorySettingsListResponse
{
public List<CategorySettings> CategorySettingsList { get; set; }
}
}
And I am trying to add data to it like this
private readonly CategorySettings cs = new CategorySettings();
CategorySettingsListResponse csr=new CategorySettingsListResponse();
public string GetAllCategorySettings()
{
cs.NeedsLoginToViewLongText = true;
cs.NeedsLoginToViewAnyDetails = false;
cs.ShowAttachment = true;
cs.CategoryPageID = "1";
cs.TpUrl = "url";
csr.CategorySettingsList.Add(cs);
}
But this fails and gives an error
Object reference not set to an instance of an object.
Can any one point out what is I am doing wrong?

Somewhere, you need to initialize CategorySettingsList.
public class CategorySettingsListResponse
{
CategorySettingsListResponse() {
CategorySettingsList = new List<CategorySettings>();
}
public List<CategorySettings> CategorySettingsList { get; set; }
}

You are tying to use an instance of List before initializing. Before
csr.CategorySettingsList.Add(cs);
Insert:
if (csr.CategorySettingsList == null) {
csr.CategorySettingsList = new List<CategorySettings>();
}

You are using uncreated objects cs and CategorySettingsList, you should create them before use:
public string GetAllCategorySettings()
{
csr.CategorySettingsList = new ListCategorySettings<>();
var cs = new CategorySettings
{
NeedsLoginToViewLongText = true,
...

What is cs? Something missing?
You forgot to do this:
var cs = new CategorySettings();
Also
You need to instantiate the CategorySettingsList in constructor for CategorySettingsListResponse.