I use .net framework 4, and petapoco to create a my first Web API module in dnn. here is my code:
[TableName("TblBPMProcess")]
[PrimaryKey("ProcessID", AutoIncrement = true)]
[Cacheable("ProcessInfo", CacheItemPriority.Default, 20)]
[Scope("ModuleId")]
public class ProcessInfo
{
public int ProcessID { get; set; }
public int ModuleID { get; set; }
public string DynamicModuleID { get; set; }
public string ProcessCaption { get; set; }
public int Availability { get; set; }
public int CreatedBy { get; set; }
public string CreatedDate { get; set; }
public string ModifiedDate { get; set; }
}
In controller:
public IEnumerable<ProcessInfo> GetList(int ModuleID)
{
IEnumerable<ProcessInfo> item;
using (IDataContext ctx = DataContext.Instance())
{
var rep = ctx.GetRepository<ProcessInfo>();
item = rep.Get(ModuleID);
}
return item;
}
In codebehind:
protected void Page_Load(object sender, EventArgs e)
{
var cnt = new StateController();
IEnumerable<StateInfo> lst = cnt.GetList(1);
rptHostList.DataSource = lst;
}
in Page_Load, lst returns null. i double checked all columns and table names. there is neither error nor data. Any Idea?
As I understand the method may return an IEnumerable with items or null (if there is no items).
So all what you need to do is check if the returned value is not null:
protected void Page_Load(object sender, EventArgs e)
{
var cnt = new StateController();
IEnumerable<StateInfo> lst = cnt.GetList(1);
if (lst != null)
{
rptHostList.DataSource = lst;
}
}
In [Scope("ModuleId")] , I believe that puts in the current ModuleId instead of the one you are passing in.
You may want to comment that out or change it, and see if it works. It may be getting it confused some how.
Related
I want to populate listview with information retrieved from database using WCF in C# and am not able to retrieve correct data for listview binding.
public interface IServicePl
{
[OperationContract]
[OperationContract]
IEnumerable<InterventiiCuEchipament> GetInterventiiCuEchipaments();
}
[DataContract]
public class InterventiiCuEchipament
{
[DataMember]
public string EchipamentInterventie { get; set; }
public int id_interventie { get; set; }
public string tip_interventie { get; set; }
public string responsabil { get; set; }
public DateTime data_finalizare { get; set; }
public bool status { get; set; }
}
public IEnumerable<InterventiiCuEchipament> GetInterventiiCuEchipaments()
{
try
{
IEnumerable<InterventiiCuEchipament> query = from sel1 in dataP.interventiis
join sel2 in dataP.sesizaris
on sel1.id_interventie equals sel2.id_sesizare
select new InterventiiCuEchipament()
{
id_interventie = sel1.id_interventie,
EchipamentInterventie = sel2.echipament,
tip_interventie = sel2.tip_sesizare,
responsabil = sel1.responsabil,
data_finalizare = (DateTime)sel1.data_finalizare,
status = (bool)sel1.status
};
return query;
}
On the client side I have the following code :
if (client.InnerChannel.State != CommunicationState.Faulted)
{
List<InterventiiCuEchipament> ListaInterventii = new List<InterventiiCuEchipament>();
ListaInterventii = client.GetInterventiiCuEchipamentsAsync().Result.ToList();
InterventiiList.ItemsSource = ListaInterventii;
InterventiiList.Items.Refresh();
}
Output from query is ok, like in this image
Output for listview binding is like in this image
Why I can see just the count of query? and not correct values returned by query.
If the query returns values, then ListaInterventii should also have values.
I wrote a similar demo, you can compare it.
You can use foreach to see if there is a value.
ListaInterventii = client.GetInterventiiCuEchipamentsAsync().Result.ToList();
foreach(var a in ListaInterventii)
{
int A = a.id_interventie;
}
Demo
public class ProductService : IServicePl
{
public IEnumerable<InterventiiCuEchipament> GetInterventiiCuEchipaments()
{
// This comes from database.
var _dbCountries = new List<InterventiiCuEchipament>
{
new InterventiiCuEchipament {id_interventie = 1, tip_interventie="1"},
new InterventiiCuEchipament {id_interventie = 2, tip_interventie="2"},
new InterventiiCuEchipament {id_interventie = 3, tip_interventie="3"},
};
return _dbCountries;
}
}
[ServiceContract]
public interface IServicePl
{
[OperationContract]
IEnumerable<InterventiiCuEchipament> GetInterventiiCuEchipaments();
}
[DataContract]
public class InterventiiCuEchipament
{
[DataMember]
[Key]
public int id_interventie { get; set; }
public string tip_interventie { get; set; }
}
client side
ServicePlClient client = new ServicePlClient();
List<InterventiiCuEchipament> ListaInterventii = new List<InterventiiCuEchipament>();
ListaInterventii = client.GetInterventiiCuEchipamentsAsync().Result.ToList();
I was doing mapping with wildcards. I get this error because the definition of the rule to be searched only comes from a table.
I do not know exactly how right I am doing this here, but as a result I have a mistake and I expect your help.
public class Ekstre
{
private readonly DataClasses1DataContext db = new DataClasses1DataContext();
private readonly KdrGnyClassesDataContext kg = new KdrGnyClassesDataContext();
public bool check { get; set; }
public int Id { get; set; }
public DateTime Tarih { get; set; }
public string Kodu { get; set; }
public string Açıklama { get; set; }
public decimal Tutar { get; set; }
public string bankaKod { get; set; }
private string kod = null;
public string muhKod {
get { return kod = kg.kuralTanimlari
.FirstOrDefault(a => Regex.IsMatch(Açıklama, WildCardToRegular(a.kural))).hesapKodu;
}
set { kod = value; }
}
private string hesap = null;
public string hesapAdi {
get {
hesap = !string.IsNullOrWhiteSpace(muhKod) ? db.MUHHESAP.First(p => p.MUHKOD == muhKod).MUHADI1 : null;
return hesap;
}
set => hesap = value;
}
public string kodTipi { get; set; }
}
public static string WildCardToRegular(string value)
{
return "^" + Regex.Escape(value).Replace("\\?", ".").Replace("\\*", ".*") + "$";
}
You can only use supported functions on dbcontext queries over IQuerable.
You have two options
1. Fire db query by doing ToList() or ToArray() and then .FirstOrDefault(.....)
This has a drawback that it will fetch all records from db and then apply your
function to results.
Convert your filtering function to a simple sql supported function. As far as i know Regex is not supported in entity framework
public string muhKod {
get
{
var firstOrDefault = kg.kuralTanimlari.ToList()
.FirstOrDefault(a => Regex.IsMatch(Açıklama, WildCardToRegular(a.kural)));
if (firstOrDefault != null)
kod = firstOrDefault.hesapKodu;
return kod;
}
set => kod = value;
}
It works so beautifully. Thank you.
I have class
public class Gallery
{
public string method { get; set; }
public List<List<object>> gidlist { get; set; }
public int #namespace { get; set; }
}
Button code
private void button1_Click(object sender, EventArgs e)
{
List<object> data = new List<object>();
data.Add(618395);
data.Add("0439fa3666");
Gallery jak = new Gallery();
jak.method = "gdata";
jak.gidlist.Add(data);
jak.#namespace = 1;
string json = JsonConvert.SerializeObject(jak);
textBox2.Text = json;
}
Here I get System.NullReferenceException. How to add item to gidlist ?
You get it because in now place you initialized the list within jak.
You can:
Add a default constructor and initialize list there:
public class Gallery
{
public Gallery()
{
gidlist = new List<List<object>>();
}
public string method { get; set; }
public List<List<object>> gidlist { get; set; }
public int #namespace { get; set; }
}
If in C# 6.0 then you can use the auto-property initializer:
public List<List<object>> gidlist { get; set; } = new List<List<object>>()
If in under C# 6.0 and don't want the constructor option for some
reason:
private List<List<object>> _gidlist = new List<List<object>>();
public List<List<object>> gidlist
{
get { return _gidlist; }
set { _gidlist = value; }
}
You can just initialize it before using (I don't recommend this option)
Gallery jak = new Gallery();
jak.method = "gdata";
jak.gidlist = new List<List<object>>();
jak.gidlist.Add(data);
jak.#namespace = 1;
If before C# 6.0 best practice will be option 1. If 6.0 or higher then option 2.
I need some help with passing the ListView Tapped Id (which I get from a json).
I populate the listView with an API call to a server:
private async void searchButton_Click(object sender, RoutedEventArgs e)
{
var textFrom = odTextBox.Text;
var textTo = doTextBox.Text;
var searchResult = await PrevoziApi.SearchRidesAsync(textFrom, textTo, datePicker.Date.UtcDateTime);
var array = searchResult.CarshareList
.OrderBy(cs => cs.Time)
.Select(cs => cs.Contact + " " + cs.Time)
.ToArray();
listView.ItemsSource = array;
}
Now, when I click on an item of listView, I want to navigate to another page(CarShareDetailedPage) and make another call to the API, to get more detailed data about that item. So I need to pass the selectedItem id from one page to other. How do I do that ?
I'm navigating to another page like this:
private void listView_Tapped(object sender, TappedRoutedEventArgs e)
{
Frame.Navigate(typeof(CarShareDetailedPage), listView.SelectedIndex);
}
The OnNagiatedMethod on that page is:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var value = e.ToString();
carShareTextBox.Text = value;
}
And my json class is:
public class CarshareList
{
[JsonProperty("id")]
public int Id { get; set; }
[JsonProperty("type")]
public string Type { get; set; }
[JsonProperty("from_id")]
public string FromId { get; set; }
[JsonProperty("from_country")]
public string FromCountry { get; set; }
[JsonProperty("from_country_name")]
public string FromCountryName { get; set; }
[JsonProperty("to_id")]
public string ToId { get; set; }
[JsonProperty("to")]
public string To { get; set; }
[JsonProperty("to_country")]
public string ToCountry { get; set; }
[JsonProperty("to_country_name")]
public string ToCountryName { get; set; }
[JsonProperty("time")]
public string Time { get; set; }
[JsonProperty("date_iso8601")]
public DateTime DateIso8601 { get; set; }
[JsonProperty("added")]
public DateTime Added { get; set; }
[JsonProperty("price")]
public double? Price { get; set; }
[JsonProperty("num_people")]
public double NumPeople { get; set; }
[JsonProperty("author")]
public string Author { get; set; }
[JsonProperty("is_author")]
public string IsAuthor { get; set; }
[JsonProperty("comment")]
public string Comment { get; set; }
[JsonProperty("contact")]
public string Contact { get; set; }
[JsonProperty("date")]
public string Date { get; set; }
[JsonProperty("full")]
public string Full { get; set; }
[JsonProperty("insured")]
public string Insured { get; set; }
[JsonProperty("share_type")]
public string ShareType { get; set; }
[JsonProperty("confirmed_contact")]
public string ConfirmedContact { get; set; }
[JsonProperty("bookmark")]
public object Bookmark { get; set; }
[JsonProperty("from")]
public string From { get; set; }
}
public class CarshareResponse
{
[JsonProperty("search_type")]
public string SearchType { get; set; }
[JsonProperty("carshare_list")]
public IList<CarshareList> CarshareList { get; set; }
}
Let me say this is the first time ever I'm doing any work with Apis and json.
Thanks for your help!
EDIT: I added the code for the API below, so this now should be all the code I have.
public class PrevoziApi
{ public static async Task<CarshareResponse> SearchRidesAsync(
string fromCity,
string toCity,
DateTime date,
string type = "shares",
CancellationToken token = default(CancellationToken))
{
using (var client = new RestClient("https://prevoz.org/api/"))
{
var request = new RestRequest("search/" + type + "/", HttpMethod.Get);
request.AddQueryParameter("f", fromCity);
request.AddQueryParameter("fc", "SI");
request.AddQueryParameter("t", toCity);
request.AddQueryParameter("tc", "SI");
request.AddQueryParameter("d", date.ToString("yyyy-MM-dd"));
request.AddQueryParameter("exact", "true");
return
(await client.Execute<CarshareResponse>(request, token)).Data;
}
}
}
So with this, you are ordering by the time but displaying a string only that says "[Contact] [Time]". This in-and-of-itself does not hold any relation to the JSON that was returned from your search method. What you'll want to do is instead of making it an array, instead making a List<> object that can store some additional "background" data about that request to send off.
This will require a bit more effort though on your end. You will want to create a class
public class CarItemView {
public string DisplayText {get; set;}
public int ID {get; set;}
}
and fill it with whatever data you want to pass along. Then in your filtering you would do:
List<CarItemView> array = searchResult.CarshareList
.OrderBy(cs => cs.Time)
.Select(cs => new { DisplayText = cs.Contact + " " + cs.Time, ID = cs.Id}).ToList();
You will then, in your XAML, have to add a template to your listview for display. (Note, this is a real rough outline for a XAML Template)
<ListView>
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding DisplayText}" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
NOW when you get your selected item changed event fired, you can handle it and get the ID.
private void listView_Tapped(object sender, TappedRoutedEventArgs e)
{
var obj = (CarItemView) listView.SelectedItem; // convert item to our new class
Frame.Navigate(typeof(CarShareDetailedPage), obj.Id.ToString()); // send ID as string
}
Then for the receiving page:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var value = e.ToString();
carShareTextBox.Text = value; // will show the ID number
var caritemret = /* write a new restful function to return based on ID */
}
UPDATE: This answer was updated from original to reflect the use of an array instead of a list<> object
I hope this helps!
This works:
private async void searchButton_Click(object sender, RoutedEventArgs e)
{
var textFrom = odTextBox.Text;
var textTo = doTextBox.Text;
var searchResult = await PrevoziApi.SearchRidesAsync(textFrom, textTo, datePicker.Date.UtcDateTime);
List<CarItemView> array = searchResult.CarshareList
.OrderBy(cs => cs.Time)
.Select(cs => new CarItemView { DisplayText = cs.Contact + " " + cs.Time, Id = cs.Id })
.ToList();
listView.ItemsSource = array;
}
private void listView_Tapped(object sender, Windows.UI.Xaml.Input.TappedRoutedEventArgs e)
{
var obj = (CarItemView)listView.SelectedItem; // convert item to our new class
Frame.Navigate(typeof(CarShareDetailedPage), obj.Id); // send ID as string
}
And on navigated to method on the destination page:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var value = e.Parameter.ToString();
carShareTextBox.Text = value; // will show the ID number
/* write a new restful function to return based on ID */
}
Thanks #daniel, it was mostly as you suggested, with a few errors, but with the help of some guys at the c# chat channel I managed. Thanks to all.
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.