Trying to create a prayer time app for prayertimes in Oslo. I have a XML file located in the app.
What i want to do:
Based on month and the day, get value for morning prayer, evening prayer and so on.
I want one value at a time, and show it in a textblock. how do i do it?
I am currently getting the info in a listBox but i rather want the single value to be shown in a textblock. Or should i use some other thing?
public class PrayerTime
{
public string Fajr { get; set; }
public string Sunrise { get; set; }
}
To get the value:
XDocument loadedCustomData = XDocument.Load("WimPrayerTime.xml");
var filteredData = from c in loadedCustomData.Descendants("PrayerTime")
where c.Attribute("Day").Value == myDay.Day.ToString()
&& c.Attribute("Moth").Value == myDay.Month.ToString()
select new PrayerTime()
{
Fajr = c.Attribute("Fajr").Value,
Soloppgang = c.Attribute("Soloppgang").Value,
};
listBox1.ItemsSource = filteredData;
Also i want to know how best the XML should be set up for this purpose.
Like this:
<PrayerTime>
<Day>1</Day>
<Month>5</Month>
<Fajr>07:00</Fajr>
<Sunrise>09:00</Sunrise>
</PrayerTime>
Or like this:
<PrayerTime
Day ="1"
Month="5"
Fajr="07:00"
Sunrise="09:00"
/>
yourTextBox.Text = filteredData.First().Fajr;
As to know whether it's best to put information in a XML file as attributes or nodes, that's a recurrent question with no definite answer. In most cases, it's just a matter of taste.
Related
guys!
I have a small issue with LINQ (Im total beginer in this topic). Maybe it is some desing mistake, but let you decide it.
I'm coding a Windows Store App, which is kind a calendar. It has a Day object. Because of the semantic zoom (and some groupping hack), I put this Day into a wrapper class, named as Month.
After loading all data, and after getting the current data, I want to extract from this structure the current Day object.
Here is the important code:
public class Day
{
public int nr { get; set; }
...
}
public class Month
{
public string Title {get;set;}
public List<Day> Days{get;set;}
}
Later I have this:
List<Month> Months;
It is correctly filled with lists of days. Now comes the tricky part:
Day Today = Months.Find( ??? )
I had some idea, but none of them was statisfying...
So, the question is:
How can I select an item from a multiple list hierarchy in LINQ?
(List<List<Day>>, and one condition must met in each list (Day.nr and Month.nr))
Create an Enum for every month:
public enum NamesOfMonths
{
January = 1,
February = 2,
// so on and so forth
}
Now, you can use it to find the correct Month, and eventually the correct Day.
var dayToday = DateTime.Now.Day;
var monthToday = DateTime.Now.Month;
Day Today = Months.Find(m => m.Title.Equals(((NamesOfMonths)monthToday).ToString()))
.Days.Where(d => d.Nr == dayToday).FirstOrDefault();
I think you're looking for SelectMany:
var days = months.SelectMany(m => m.Days); // Gets all the days in those months
var today = days.Where(d => /* some condition goes here */);
Im using VS to develop a windows phone app. Im doing it wp8 but it doesnt matter because it the code works for 7 too. Anyway, I have a text box and a button. When the text from the text box is entered, and the button is clicked it adds that to isolated storage.
On my other page, I have a textblock. Which should display what I wrote in the text box. It does work, but first let me sho you my code.
if (appsettings.Contains("name"))
{
appsettings.Remove("name");
appsettings.Add("name", TitleTextBox.Text); //rename if already exists
}
and then the second page that collects the info is below.
if (appsettings.Contains("name"))
{
string content = appsettings["name"].ToString(); //converts to string
titleTextBlock.Text = content; //shows title in text block
}
The problem is, the "name" works. However, if I call it ANYTHING else it does not. I want to add a different name because i want to be able to input two lots. For example two text box's and then when you press the button and go to the other page, it has two textblocks displaying each string in each one. I can't seem to do this because only "name" works. Ive changed it to other names and it doesnt work. Does anyone know why?
IsolatedStorageSettings works as a Dictionary. If you want to acces a specific key it should exist in the Dictionary.
If you try to change the value that already exists you can do like this:
if (appSettings.Contains("key")) appSettings["key"] = "new value";
else appSettings.Add("key", "new value");
Don't also forget to save your appSettings:
appSettings.Save();
And also according to your code - in ISS you can put not only string - it can be any object, if you want to get it, you should make a cast or use as:
string content = (string)appsettings["name"]; //converts to string
string content = appsettings["name"] as string;
EDIT - after comments, rebuild once more
If you want to have a to-do-list and you know that every task has its specific title, description and time then I would advise to create a special class for this, for example:
public class myTodo
{
public string TaskTitle { get; set; }
public string TaskDescription { get; set; }
public TimeSpan ElapsedTime { get; set; }
}
I used TimeSpan because I think it's easier to manage Time with it. Then if you want to Save/Load your myTodo you can do like this:
// create an example of your task
myTodo newTask = new myTodo() { TaskTitle = "Clean", TaskDescription = "Clean room", ElapsedTime = new TimeSpan(2, 0, 0) };
// add it to ISS and save
if (appSettings.Contains("firatTask")) appSettings["firatTask"] = newTask;
else appSettings.Add("firatTask", newTask);
appSettings.Save();
// try to load
myTodo read = appSettings["firatTask"] as myTodo;
You can access your item like this:
read.Title = TitleTextBox.Text; // and so on
Consider also making a List<myToDo> and be aware that ISS shoul also handle this:
List<myTodo> listJob = new List<myTodo>();
listJob.Add(firstTask); // firstTask is myToDo
listJob.Add(secondTask); // secondTask is myToDo
if (appSettings.Contains("listTask")) appSettings["listTask"] = listJob;
else appSettings.Add("listTask", listJob);
appSettings.Save();
List<myTodo> readList = appSettings["listTask"] as List<myTodo>;
I'm using Telerik OpenAccess and SQL Server on a project and I need to be able to search by what someone's age will be on a certain date. The problem that I am running into is that the person's date of birth is stored in one table and the date to compare to is in another table, which prevents me from using a computed column. They are, however, joined together so that I can calculate the age by creating my own non-persistent property in the partial class like so:
public partial class Student
{
[Telerik.OpenAccess.Transient]
private int? _ageUponArrival;
public virtual int? AgeUponArrival
{
get
{
try
{
var dob = DateTime.Parse(this.StudentProfiles.First().Person.YearOfBirth);
var programStart = (DateTime)(this.StudentPrograms.First().ProgramStart);
this._ageUponArrival = programStart.Year - dob.Year;
if (dob > programStart.AddYears(-(int)(this._ageUponArrival)))
{
(this._ageUponArrival)--;
}
}
catch (Exception e)
{
this._ageUponArrival = null;
}
return _ageUponArrival;
}
set { }
}
}
Please ignore how bad the tables are set up, it's something that I inherited and can't change at this point. The problem with this approach is that the property is not available to search on with Linq. I know that I could create a view that would do this for me, but I would much rather not have to maintain a view just for this. Is there any way at all to create a calculated property through Telerik that would be calculated on the db server in such a way as to be searchable?
It appears that this is not possible at this point. http://www.telerik.com/community/forums/orm/linq-questions/dynamic-query-with-extended-field.aspx
I am trying to conditionally calculate some values based on user inputs in a form. The "inputs" themselves tie into the calculation, in that if a user is presented with two radio button lists their selections will determine whether or not a currency amount is attached, and then later added together. I don't understand jquery, and so I cannot figure out how to use something like knockout.js to do what I want (besides, my calculation will be served up in a confirmation view only and will not be "re-calculated" unless the user goes back and changes their selections).
Note, I am not talking about the scenario where you have a textbox that accepts a value and adding it to another textbox value the user inputs (e.g., user enters 10, then 10, then form calculates 20). The values are static based upon selection.
For context, I am using Serializer and a wizard which is stepping through and passing model selections/inputs to the subsequent view.
I can do something like this as an example (it's simple, but based on responses I can figure out how to build it up to the more complex scenario I have):
Model.cs:
[DataType(DataType.Currency)]
[DisplayFormat(DataFormatString = "{0:c}")]
public decimal calculated { get; set; }
[DataType(DataType.Currency)]
[DisplayFormat(DataFormatString = "{0:c}")]
public decimal option1 = 500;
[DataType(DataType.Currency)]
[DisplayFormat(DataFormatString = "{0:c}")]
public decimal option2 = 100;
//Following is just my idea to calculate $0 if
//a selection results in a "no value option"
//although I suppose if nothing is selected I
//can just avoid calculating + $0
[DataType(DataType.Currency)]
[DisplayFormat(DataFormatString = "{0:c}")]
public decimal nooption = 0;
Then in Confirm.cshtml:
#{
Model.calculated = Model.option1 + Model.option2 + Model.nooption;
}
....
#Html.DisplayFor(m => m.calculated)
will display $600.00. That's easy enough.
However, my goal is threefold. First, I need to tie in, for example, option1 with the selection from a radiobutton list, and option2 with another radiobutton list depending on what the user selects. Second, depending on the selection I want to conditionally calculate all the options present which will obviously vary based on user selection (some users will select option1 and option2, others just option1, others just option2, still others neither). Third, where is the best place to have the calculation take place (the view, a .cs file, the controller (although I am trying to minimize code there), etc.).
So, if I have these enums for the radiobutton lists (each option corresponding to an option for now, later I will discuss two options per radiobutton list enum):
public enum radio1
{
radio1selection1, // this would correspond to nooption (or $0)
radio1selection2 // this would correspond to option1 (or $500)
}
public enum radio2
{
radio2selection1, // this would correspond to nooption (or $0)
radio2selection2 // this would correspond to option2 (or $100)
}
I've indicated in the enums how I'd like to "tie" the option to the selection.
My problem is in trying to do if statements, which I cannot figure out properly. Something like this in Confirm.cshtml:
#{
if (Model.radio1 == radio1selection1)
Model.calculated = Model.nooption;
else....
}
The above is completely wrong, I know. I am trying to think of all the permutations of calculating, but I don't think its worth the effort because it would either be wrong or it would work but be too long when there is an easier way. I was even thinking of trying case/break but that too seems oddly the wrong approach.
What's adding to the complexity for me is if my enums have more than two selections, and those other selections result in several options, say option1 and option1a, and depending on which the user selects will determine the calculation. So the enum becomes:
public enum radio1
{
radio1selection1, // this would correspond to nooption (or $0)
radio1selection2, // this would correspond to option1 (or $500)
radio1selection3 // this would correspond to NEW
// option1a (or $750) (with a corresponding
// "int" named "option1a")
}
One of the things I thought of doing was to just display all the options selected in a <table> in the view, so that even if something is a $0 value, it would just say $0 as the option. Then I thought I could just add all the values present. But still I don't know the best way to accomplish that.
Any opinions on how I would be able to and or all three of my stated goals above?
I would define the property as follows:
[DataType(DataType.Currency)]
[DisplayFormat(DataFormatString = "{0:c}")]
public decimal calculated { get { return option1 + option2 + option3; } }
You can make the logic as conditional as necessary inside the getter. I think model is the best place for those calculations, which is what we get with the calculated property.
To render a collection of options, define them as follows:
public class MyOption
{
public string ID { get; set; }
public string Name { get; set; }
}
List<MyOptions> options = new List<MyOptions>();
options.Add(new MyOption { ID = "1", Name = "First" });
model.Options = options;
You can have a method instead of the Options property that returns a list of options based on the data of the option* properties.
Then convert it to a SelectList object in some helper method. An HTML helper can be defined as follows:
public static class MyHelperExtensions
{
public static SelectList MyOptionList(this HtmlHelper helper, List<MyOptions> options)
{
return new SelectList(options, "ID", "Name");
}
}
In the view, use the following code to render the options:
#Html.DropDownListFor(x => x.MyOptionProperty, Html.MyOptionList(Model.Options))
I figured out how to do this (might not be clean/efficient/standard practice, but it got the job done):
Model.calculated =
Model.PriceQuote.priceChapter7Solution +
((Model.radiobuttonlist1 ==
Namespace.ViewModels.MyModel.radio1.radio1selection1) ?
Model.option1 :
(Model.radiobuttonlist1 ==
Namespace.ViewModels.MyModel.radio1.radio1selection2) ?
Model.option2 :
Model.nooption);
I could just add + after ... : Model.nooption) instead of ending the statement with ; to calculate conditions on other options.
Originally I did not know that the conditional (? :) operator could contain more than two expressions - i.e., it's right associative so additional conditions will be evaluated as a ? b : (c ? d : e). See Docs.
SLIGHT UPDATE BELOW
I am trying to use the [Description] data annotation attribute with enums in order to display a friendly name. I've searched around a lot and cannot get anything implemented. Right now I have code that will display an enum as a string (using an extension), but I am not liking ThisIsAnEnum as an enum name (which is spaced out by the string extension) and it prohibits me from having longer names (which I need to maintain) such as for a radio button item. My goal is to have longer descriptions for radio button items without having to write really long enums. An extension/helper will probably be the right way to go, but I need to "fit" it into the code I am using, which is where I failed using the many examples out there.
The code I am using is generic, in that depending upon some logic either a radio button list, check box list, drop down list, select list or regular text boxes are displayed. For multi-item lists enum's are used, and the enum name is what is displayed (after using the string extension).
Here is the particular code that displays the enum:
public static IEnumerable<SelectListItem> GetItemsFromEnum<T>
(T selectedValue = default(T)) where T : struct
{
return from name in Enum.GetNames(typeof(T))
let enumValue = Convert.ToString((T)Enum.Parse(typeof(T), name, true))
select new SelectListItem
{
Text = name.ProperCase(),
Value = enumValue,
Selected = enumValue.Equals(selectedValue)
};
}
ProperCase is the class that changes the enum to something readable.
I found something that almost worked:
public static string GetEnumDescription<TEnum>(TEnum value)
{
FieldInfo fi = value.GetType().GetField(value.ToString());
DescriptionAttribute[] attributes =
(DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
if ((attributes != null) && (attributes.Length > 0))
return attributes[0].Description;
else
return value.ToString();
}
in which case I changed code from Text = name.ProperCase(), to Text = name.GetEnumDescription(...) but if I put value in the parenthesis I get a "does not exist in the current context" message (which I tried fixing but just made the problem worse). If I leave it blank I get the "No overload for ... takes 0 arguments" (again, understandable - but I don't know how to fix). And if I put name in the parenthesis the code compiles but upon viewing the page I get the "Object reference not set..." error on this line:
DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes
(typeof(DescriptionAttribute), false);
I've spent a lot of time on this and know that my stumbling block is the
Text = name.ProperCase(),
code. Any ideas/help? Thanks in advance.
UPDATE:
If I do:
Text = GetEnumDescription(selectedValue),
I actually DO get the [Description] text, however, it just displays for the first enum. So, if I have 5 enums all with different [Description]'s the code just repeats the [Description] for the first enum 5 times instead of displaying differently for each. I hope that makes sense and gets to narrow down the problem.
I'd recommend you the Display attribute:
public static IEnumerable<SelectListItem> GetItemsFromEnum<T>(T selectedValue = default(T)) where T : struct
{
return
from name in Enum.GetNames(typeof(T))
let enumValue = Convert.ToString((T)Enum.Parse(typeof(T), name, true))
select new SelectListItem
{
Text = GetEnumDescription(name, typeof(T)),
Value = enumValue,
Selected = name == selectedValue.ToString()
};
}
public static string GetEnumDescription(string value, Type enumType)
{
var fi = enumType.GetField(value.ToString());
var display = fi
.GetCustomAttributes(typeof(DisplayAttribute), false)
.OfType<DisplayAttribute>()
.FirstOrDefault();
if (display != null)
{
return display.Name;
}
return value;
}
and then you could have:
public enum Foo
{
[Display(Name = "value 1")]
Value1,
Value2,
[Display(Name = "value 3")]
Value3
}
And now you could have:
var foo = Foo.Value2;
var values = GetItemsFromEnum(foo);
Also notice that I have modified the Selected clause in the LINQ expression as yours is not correct.
This being said, personally I would recommend you staying away from enums on your view models as they don't play nicely with what's built-in ASP.NET MVC and you will have to reinvent most of the things.