My code sets icon svgs like this:
Current.Resources["HomePageIcon5"] = (new[] {
"resource://Japanese.Resources.5_Light.svg",
"resource://Japanese.Resources.5_Gray.svg",
"resource://Japanese.Resources.5_Dark.svg" })[thc];
It does the same for many more icons and the same string
"resource://Japanese.Resources."
Appears many times.
Is there a way I could create a local method that could do this for me? What I am looking for is something I could call like this:
Current.Resources["HomePageIcon5"] = X("5_Light","5_Gray","5_Dark");
something like:
private static readonly _resourcesPath = "resource://Japanese.Resources.";
public void FillResource(string key, string value, int idx)
{
var content = new[]
{
_resourcesPath + value + "_Light.svg",
_resourcesPath + value + "_Gray.svg",
_resourcesPath + value + "_Dark.svg"
}
Current.Resources[key] = content[idx];
}
and use it like:
FillResource("HomePageIcon5", "5", thc);
The exact implementation for your request will be the following:
public string[] GetFormattedResources(params string[] strings)
{
const string STRING_FORMAT = "resource://Japanese.Resources.{0}.svg";
return strings.Select(str => string.Format(STRING_FORMAT, str)).ToArray();
}
This function uses the params keyword for grouping the strings and LINQ functions to handle the collection easily. (For example: Select)
The call will be as follows:
Current.Resources["HomePageIcon5"] = GetFormattedResources("5_Light","5_Gray","5_Dark");
I have below comma separated string. This string contains relation which is needed in the application for processing.
string userInputColRela = "input1:Student_Name, input2:Student_Age";
Now, i need to extract Student_Name if i provide input as input1 and Student_Age if the input provided is input2.
How can i achieve this? I know i can go with looping but that will be a little lengthy solution, what is other way round?
You could parse the input string by splitting firstly on the comma, then again on the semi-colon to get the key-value pairs contained in it in dictionary form. For example:
string userInputColRela = "input1: Student_Name, input2: Student_Age";
var inputLookup = userInputColRela
.Split(',')
.Select(a => a.Split(':'))
.ToDictionary(a => a[0].Trim(), a => a[1].Trim());
var studentName = inputLookup["input1"];
If your strings are always in the format input1:Student_Name, input2:Student_Age then probably you can use a Dictionary<k,v> and Split() function like
string userInputColRela = "input1:Student_Name, input2:Student_Age";
string input = "input1";
var args = userInputColRela.Split(',');
Dictionary<string, string> inputs = new Dictionary<string, string>();
foreach (var item in args)
{
var data = item.Split(':');
inputs.Add(data[0], data[1]);
}
Console.WriteLine(inputs[input]);
I have a comma separated string variable and i need to check its values exists in a given List
string freeServices = "1,7,13,21";
List<int> selectedServices = booking.SelectedServices.Select(x => x.ServiceID).ToList();
i have tried something like this
if (selectedServices.Contains(Convert.Int32(freeServices.Split(','))
{
}
can i do this? or is there any other easy way to find whether the free service ids in selected id list?
To check, all values are contained in SelectedServices:
string freeServices = "1,7,13,21";
var values = freeServices.Split(',').Select(o=>Convert.ToInt32(o)).ToList();
List<int> selectedServices = booking.SelectedServices.Select(x => x.ServiceID).ToList();
if (selectedServices.All(o=>values.Contains(o))
{
}
Try below query, you willget contains records
var containsValues = booking.SelectedServices.where(e=> freeServices.Split(',').Contains(e.ServiceID));
You could use All and int.Parse;
string freeServices = "1,7,13,21";
List<int> selectedServices = booking.SelectedServices.Select(x => x.ServiceID).ToList();
var splittedFreeServices = freeServices.Split(',').Select(k => int.Parse(k));
var result = selectedServices.All(x => splittedFreeServices.Contains(x));
if (result) //booking.SelectedServices contains all elements of freeServices as integer
{
}
Okay so I am stumped and have looked around for this and I know I am doing the implementation of something very simple more complex than it needs to be. Basically I have a POCO object that will have a member that contains a string of other members. This is labeled as 'st' and it may have strings that are comma seperated series in one string. Thus I may have two members of strings be 'images, reports' and another 'cms, crm'. I have a list of objects that I want to match for PART OF those strings but not necessarily all as a DISTINCT LIST. So a member of 'cms' would return the value of anything that contained 'cms' thus 'cms, crm' would be returned.
I want to hook this up so a generic List can be queried but I cannot get it to work and was looking at other threads but there methods do not work in my case. I keep thinking it is something simple but I am missing it completely. Please let me know if anyone has better ideas. I was looking here but could not get the logic to apply correctly:
Linq query list contains a list
I keep trying methods of 'Select', 'SelectMany', 'Contains', 'Any', 'All' at different levels of scope of the continuations to no avail. Here is a simple excerpt of where I am at with a simple Console app example:
public class Program
{
public class StringModel
{
public string name { get; set; }
public string str { get; set; }
}
static void Main(string[] args)
{
string s = "";
List<StringModel> sm = new List<StringModel>
{
new StringModel
{
name = "Set1",
str = "images, reports"
},
new StringModel
{
name = "Set2",
str = "cms, crm"
},
new StringModel
{
name = "Set3",
str = "holiday, pto, cms"
}
};
sm.ForEach(x => s += x.name + "\t" + x.str + "\n");
var selected = new List<object> {"cms", "crm"};
s += "\n\nITEMS TO SELECT: \n\n";
selected.ForEach(x => s += x + "\n");
s += "\n\nSELECTED ITEMS: \n\n";
// works on a single item just fine
var result = sm.Where(p => p.str.Contains("cms")).Select(x => new { x.name, x.str}).ToList();
// I am not using select to get POCO on other methods till I can get base logic to work.
// Does not return anything
var result2 = sm.Where(p => selected.Any(x => x == p.str)).ToList();
// Does not return anything
var result3 = sm.Where(p => selected.Any(x => selected.Contains(p.str))).ToList();
result.ForEach(y => s += y + "\n");
s += "\n\n2nd SET SELECTED: \n\n";
result2.ForEach(y => s += y + "\n");
s += "\n\n3rd SET SELECTED: \n\n";
result3.ForEach(y => s += y + "\n");
Console.WriteLine(s);
Console.ReadLine();
}
}
result2 is empty because you're comparing an object (x) with a string (StringModel.str). This will be a reference comparison. Even if you convert x to a string, you'll be comparing each value in selected ("cms", "crm") with your comma-separated string values ("images, reports", "cms, crm", "holiday, pto, cms").
result3 is empty because selected ("cms", "crm") does not contain any of the string values ("images, reports", "cms, crm", "holiday, pto, cms"), although in this case at least the comparisons are value comparisons.
I think you're looking for something like:
var result = sm.Where(p => selected.Any(x => p.str.Contains((string)x)));
I got one big question.
I got a linq query to put it simply looks like this:
from xx in table
where xx.uid.ToString().Contains(string[])
select xx
The values of the string[] array would be numbers like (1,45,20,10,etc...)
the Default for .Contains is .Contains(string).
I need it to do this instead: .Contains(string[])...
EDIT : One user suggested writing an extension class for string[]. I would like to learn how, but any one willing to point me in the right direction?
EDIT : The uid would also be a number. That's why it is converted to a string.
Help anyone?
spoulson has it nearly right, but you need to create a List<string> from string[] first. Actually a List<int> would be better if uid is also int. List<T> supports Contains(). Doing uid.ToString().Contains(string[]) would imply that the uid as a string contains all of the values of the array as a substring??? Even if you did write the extension method the sense of it would be wrong.
[EDIT]
Unless you changed it around and wrote it for string[] as Mitch Wheat demonstrates, then you'd just be able to skip the conversion step.
[ENDEDIT]
Here is what you want, if you don't do the extension method (unless you already have the collection of potential uids as ints -- then just use List<int>() instead). This uses the chained method syntax, which I think is cleaner, and
does the conversion to int to ensure that the query can be used with more providers.
var uids = arrayofuids.Select(id => int.Parse(id)).ToList();
var selected = table.Where(t => uids.Contains(t.uid));
If you are truly looking to replicate Contains, but for an array, here is an extension method and sample code for usage:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ContainsAnyThingy
{
class Program
{
static void Main(string[] args)
{
string testValue = "123345789";
//will print true
Console.WriteLine(testValue.ContainsAny("123", "987", "554"));
//but so will this also print true
Console.WriteLine(testValue.ContainsAny("1", "987", "554"));
Console.ReadKey();
}
}
public static class StringExtensions
{
public static bool ContainsAny(this string str, params string[] values)
{
if (!string.IsNullOrEmpty(str) || values.Length > 0)
{
foreach (string value in values)
{
if(str.Contains(value))
return true;
}
}
return false;
}
}
}
Try the following.
string input = "someString";
string[] toSearchFor = GetSearchStrings();
var containsAll = toSearchFor.All(x => input.Contains(x));
LINQ in .NET 4.0 has another option for you; the .Any() method;
string[] values = new[] { "1", "2", "3" };
string data = "some string 1";
bool containsAny = values.Any(data.Contains);
Or if you already have the data in a list and prefer the other Linq format :)
List<string> uids = new List<string>(){"1", "45", "20", "10"};
List<user> table = GetDataFromSomewhere();
List<user> newTable = table.Where(xx => uids.Contains(xx.uid)).ToList();
How about:
from xx in table
where stringarray.Contains(xx.uid.ToString())
select xx
This is an example of one way of writing an extension method (note: I wouldn't use this for very large arrays; another data structure would be more appropriate...):
namespace StringExtensionMethods
{
public static class StringExtension
{
public static bool Contains(this string[] stringarray, string pat)
{
bool result = false;
foreach (string s in stringarray)
{
if (s == pat)
{
result = true;
break;
}
}
return result;
}
}
}
This is a late answer, but I believe it is still useful.
I have created the NinjaNye.SearchExtension nuget package that can help solve this very problem.:
string[] terms = new[]{"search", "term", "collection"};
var result = context.Table.Search(terms, x => x.Name);
You could also search multiple string properties
var result = context.Table.Search(terms, x => x.Name, p.Description);
Or perform a RankedSearch which returns IQueryable<IRanked<T>> which simply includes a property which shows how many times the search terms appeared:
//Perform search and rank results by the most hits
var result = context.Table.RankedSearch(terms, x => x.Name, x.Description)
.OrderByDescending(r = r.Hits);
There is a more extensive guide on the projects GitHub page: https://github.com/ninjanye/SearchExtensions
Hope this helps future visitors
Linq extension method. Will work with any IEnumerable object:
public static bool ContainsAny<T>(this IEnumerable<T> Collection, IEnumerable<T> Values)
{
return Collection.Any(x=> Values.Contains(x));
}
Usage:
string[] Array1 = {"1", "2"};
string[] Array2 = {"2", "4"};
bool Array2ItemsInArray1 = List1.ContainsAny(List2);
I believe you could also do something like this.
from xx in table
where (from yy in string[]
select yy).Contains(xx.uid.ToString())
select xx
So am I assuming correctly that uid is a Unique Identifier (Guid)? Is this just an example of a possible scenario or are you really trying to find a guid that matches an array of strings?
If this is true you may want to really rethink this whole approach, this seems like a really bad idea. You should probably be trying to match a Guid to a Guid
Guid id = new Guid(uid);
var query = from xx in table
where xx.uid == id
select xx;
I honestly can't imagine a scenario where matching a string array using "contains" to the contents of a Guid would be a good idea. For one thing, Contains() will not guarantee the order of numbers in the Guid so you could potentially match multiple items. Not to mention comparing guids this way would be way slower than just doing it directly.
You should write it the other way around, checking your priviliged user id list contains the id on that row of table:
string[] search = new string[] { "2", "3" };
var result = from x in xx where search.Contains(x.uid.ToString()) select x;
LINQ behaves quite bright here and converts it to a good SQL statement:
sp_executesql N'SELECT [t0].[uid]
FROM [dbo].[xx] AS [t0]
WHERE (CONVERT(NVarChar,[t0].[uid]))
IN (#p0, #p1)',N'#p0 nvarchar(1),
#p1 nvarchar(1)',#p0=N'2',#p1=N'3'
which basicly embeds the contents of the 'search' array into the sql query, and does the filtering with 'IN' keyword in SQL.
I managed to find a solution, but not a great one as it requires using AsEnumerable() which is going to return all results from the DB, fortunately I only have 1k records in the table so it isn't really noticable, but here goes.
var users = from u in (from u in ctx.Users
where u.Mod_Status != "D"
select u).AsEnumerable()
where ar.All(n => u.FullName.IndexOf(n,
StringComparison.InvariantCultureIgnoreCase) >= 0)
select u;
My original post follows:
How do you do the reverse? I want to
do something like the following in
entity framework.
string[] search = new string[] { "John", "Doe" };
var users = from u in ctx.Users
from s in search
where u.FullName.Contains(s)
select u;
What I want is to find all users where
their FullName contains all of the
elements in `search'. I've tried a
number of different ways, all of which
haven't been working for me.
I've also tried
var users = from u in ctx.Users select u;
foreach (string s in search) {
users = users.Where(u => u.FullName.Contains(s));
}
This version only finds those that
contain the last element in the search
array.
The best solution I found was to go ahead and create a Table-Valued Function in SQL that produces the results, such as ::
CREATE function [dbo].[getMatches](#textStr nvarchar(50)) returns #MatchTbl table(
Fullname nvarchar(50) null,
ID nvarchar(50) null
)
as begin
declare #SearchStr nvarchar(50);
set #SearchStr = '%' + #textStr + '%';
insert into #MatchTbl
select (LName + ', ' + FName + ' ' + MName) AS FullName, ID = ID from employees where LName like #SearchStr;
return;
end
GO
select * from dbo.getMatches('j')
Then, you simply drag the function into your LINQ.dbml designer and call it like you do your other objects. The LINQ even knows the columns of your stored function. I call it out like this ::
Dim db As New NobleLINQ
Dim LNameSearch As String = txt_searchLName.Text
Dim hlink As HyperLink
For Each ee In db.getMatches(LNameSearch)
hlink = New HyperLink With {.Text = ee.Fullname & "<br />", .NavigateUrl = "?ID=" & ee.ID}
pnl_results.Controls.Add(hlink)
Next
Incredibly simple and really utlizes the power of SQL and LINQ in the application...and you can, of course, generate any table valued function you want for the same effects!
I believe that what you really want to do is:
let's imagine a scenario
you have two database
and they have a table of products in common
And you want to select products from the table "A" that id has in common with the "B"
using the method contains would be too complicated to do this
what we are doing is an intersection, and there is a method called intersection for that
an example from msdn:
http://msdn.microsoft.com/en-us/vcsharp/aa336761.aspx#intersect1
int [] numbers = (0, 2, 4, 5, 6, 8, 9);
int [] numbersB = (1, 3, 5, 7, 8);
var = commonNumbers numbersA.Intersect (numbersB);
I think what you need is easily solved with intersection
Check this extension method:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace ContainsAnyProgram
{
class Program
{
static void Main(string[] args)
{
const string iphoneAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like...";
var majorAgents = new[] { "iPhone", "Android", "iPad" };
var minorAgents = new[] { "Blackberry", "Windows Phone" };
// true
Console.WriteLine(iphoneAgent.ContainsAny(majorAgents));
// false
Console.WriteLine(iphoneAgent.ContainsAny(minorAgents));
Console.ReadKey();
}
}
public static class StringExtensions
{
/// <summary>
/// Replicates Contains but for an array
/// </summary>
/// <param name="str">The string.</param>
/// <param name="values">The values.</param>
/// <returns></returns>
public static bool ContainsAny(this string str, params string[] values)
{
if (!string.IsNullOrEmpty(str) && values.Length > 0)
return values.Any(str.Contains);
return false;
}
}
}
from xx in table
where xx.uid.Split(',').Contains(string value )
select xx
Try:
var stringInput = "test";
var listOfNames = GetNames();
var result = from names in listOfNames where names.firstName.Trim().ToLower().Contains(stringInput.Trim().ToLower());
select names;
var SelecetdSteps = Context.FFTrakingSubCriticalSteps
.Where(x => x.MeetingId == meetid)
.Select(x =>
x.StepID
);
var crtiticalsteps = Context.MT_CriticalSteps.Where(x =>x.cropid==FFT.Cropid).Select(x=>new
{
StepID= x.crsid,
x.Name,
Checked=false
});
var quer = from ax in crtiticalsteps
where (!SelecetdSteps.Contains(ax.StepID))
select ax;
string texto = "CALCA 40";
string[] descpart = texto.Split(' ');
var lst = (from item in db.InvItemsMaster
where descpart.All(val => item.itm_desc.Contains(val))
select item
).ToList();
Console.WriteLine("ITM".PadRight(10) + "DESC".PadRight(50)+"EAN".PadRight(14));
foreach(var i in lst)
{
Console.Write(i.itm_id.ToString().PadRight(10));
Console.Write(i.itm_desc.ToString().PadRight(50));
Console.WriteLine(i.itm_ean.ToString().PadRight(14));
}
Console.ReadKey();
string[] stringArray = {1,45,20,10};
from xx in table
where stringArray.Contains(xx.uid.ToString())
select xx
Dim stringArray() = {"Pink Floyd", "AC/DC"}
Dim inSQL = From alb In albums Where stringArray.Contains(alb.Field(Of String)("Artiste").ToString())
Select New With
{
.Album = alb.Field(Of String)("Album"),
.Annee = StrReverse(alb.Field(Of Integer)("Annee").ToString())
}