I am trying to grasp using Linq to read and filter xml files. I've been googling and trying all day long but still not successful.[code]
1. Firstly I want to select a contact with a certain node value, my code looks like this:[code]
2. The third level nodes have some same descedants child elements. Is it possible to sort the entries by <contactId>? How can I do that? For example I want to have a result like this:[code]
Example-I have a person class
Public Class Person
Private _fname As String
Public Property Fname() As String
[Code]...
Public Sub adjectAllNormals()
Dim qry As LinkedList(Of CElement) = From elm In Elements
From id In SelectIDs()
Where elm.ID = id
Console.WriteLine(qry.Count)
End Sub
I'm trying to filter out the time which is greater than 8:00 am and store it in array . Can anyone give me some suggestion?[code]
View 1 RepliesI have a list(of t) and I got a iqueryable(of a)
I want to filter out any item from the iqueryable(of a) where a.id = t.myotherid
I'm not really sure how to write this query[code]...
Imagind I have the following in VB:
function doSomething()
From ou In ctxt.Users.Where(Function(p) p.UserName = username)
...
end function
how can I send the filter as parameter (something like below)?
function doSomething(filter as whatTypeHereAndHowToInstantiateInCallingFunction)
From ou In ctxt.Users.Where(filter)
...
end function
I am trying to write a query for an existing database, I am using LINQ on EF3.5 inside VS2008 as that is the only environment available to me.I have a starter query that gives me a list of items so the user can select what they want.
"e.Result =
From c In MLDb.TBL_FeatureInfoSet
Order By c.INSP_ROUTINE_NM
Select c.INSP_ROUTINE_NM
Distinct"
The user can then select from the list one or several items they are intersted in and i want to use these as the filter in a further database call. It's not then difficult to have a where to filter on one string however, I would also like to be able to allow the user to select several items from the list box and the data for all of those to be returned.
[Code]...
I`m looking for a way to parse a parameter name like linq does.I want to filter before i download the date from the database.With LINQ the data is already red into a dataset. I only want to select data from the database witch i need. how i can send a property name to a function without using the property name as string and without to use to mutch code inside the function and without creating an instance of the object, etc.
Module
Module1
Dim user
As user =
[code]....
I have a LINQ query:[code]How can I pass "MyField" to the Sub and make the LINQ "Where" clause work?
View 2 RepliesI am wondering if it is possible to filter data from a datatable.Sample datatable
Quote:
Sno CatID Nos
1 XYZ 25
[code].....
I've got a datacontext and created a binding source using LINQ to sql but cannot filter said bindingsource. The supportsfilter of the bindingsource is set to false ? why ? I can't find any info to say that I cannot filter a binding source based on a linq query.[code]
View 3 RepliesOK I have a base query that is returning a list (ObjectQuery, actually but I don't think it matters) I have about 5 subtypes based on the main type and I need to filter them. Everything works fine until I want the results to be of the main type (not a subclass) Basically I have a query that includes everything, then I filter out the types that are not checked in a checkedbox list. (asp.net) Lets say I have an Entity named Task, and SubTask1 and SubTask2 that inherit from Task
[Code]...
Could not find this through Google or in SO questions.I have a checkbox listbox on my form. I want to filter my List by the list of selected Ids from that listbox that are checked, in SQL I would have done this like "Where TypeId In (1, 4, 5, 7)"... how do I do that in LINQ?
I feel like I am missing a really obvious answer, but cannot get it.
For argument sake... here is the what I have for sample data:
In Colors (List<of currentColors>)
ID, Name, TypeId
1, Red, 1
2, Blue, 1
3, Green, 2
4, Pink, 3
Selected Types 2 and 3 in CheckboxList: filteredColors
[Code]...
Basically i have a list(of TransRecord)
vb Public Class TransRecord
Public TableName As String
Public PKs As String
[CODE]...
And want to create a linq filter to select only unique records for TableName + PKs (group by) ... but want it to select only the record with the highest ID for this group by.
Did it but now second thing is I want to add more field like Name etc.I can do that but I want to know how do I read a line of .ini file ?I know that password will be in first line.ame in second etc etcAlso if it is not possible/easier then I also though of reading line through filterLike creating Pass=UserPass and then searchinf for Pass= in fileBut I think that reading from line would be easier.Here is code i have created till now.
Private Sub ButtonRegister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonRegister.Click
Dim usr As String = InputBox("Please enter a username", "Username")
[code].....
I'm having a little trouble trying figure out a way to filter specific file formats to only show in a Listview. For example I only want .txt files to show in a Listview and no other file formats. Is this achievable?I've had a look around the net but not found anything relevant to what I am trying to achieve.
View 2 RepliesI am populating a datagrid control using files in a specified path (DirectoryInfo).I would like to filter the files based on a user specified date range (start date & end date). While search S/O, I found this post, but I am getting an error on DateComparer ("'DateComparer' is a type and cannot be used as an expression.")
Here is my code:
Dim dirInfo As New DirectoryInfo(strDirectoryPath)
Dim dStartDate As DateTime = "03/01/2011"
Dim dEndDate As DateTime = "6/30/2011"
[code].....
I need to write a process which filters out 'old/dead' job files from a directory (actually two directories). This process needs to 'read' a number pattern (in a fixed position) off the filenames (for which there will almost certainly be duplicates), and having then 'got a list' of unique number patterns, give these to a function (which I already have) which will give a boolean, from which I can decide to either delete those files whose name contain this particular number pattern or not - this is intended to be run each night (windows task scheduler). Example directory content is:
[ode]...
I know I can get a listing using Directory.GetFiles(dirpath, "SUB_*.xml") but am stuck on how to go about the rest.
I am using open file dialog on my windows form. In the directory, there are all txt files but what I would like to do is to filter those txt files that does not contain XML in the filename. Is there a way to do it?
View 2 Repliesjust want to know how to filter the php and html files in openfiledialog in vb.net
View 1 RepliesHow do you set the FileSystemWatcher.Filter to check only two files.
Here's my code that doesn't even work.
watcher.Filter = "*.txt|*.ini"
I have an array of filenames and I would like them to be filtered depending on a string variable. An example: If my filter was *.txt, then I would like to only display files with the .txt extension. *.* (All files) *asc.* (Files that have asc in them (and any other data before asc) So on and so on. Just like popular search programs. What is the easiest way to do this?
View 2 Repliesi have a form with one combobox and textbox now on other hand i have a sql database named balance with two column one as customername and and another as obbalance now i had binded all the customer name to the combobox now what i have to do is wen user selects a customername from the combobox the textbox should show the obbalance of the selected?
View 1 RepliesI have an warning for the Functions below on SaveDestFile and MakeFile. I am not sure why.
Warning1Function 'SaveDestFile' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.
Module Functions
'Global Variables
Public MyStaff As String
Public MyFile As String
Public DestFile As String
[Code]...
I want to develop an application which can Write, Save, Read text files(or html files) What I want the application to do is. When I open my application I can write stuffs and then it will save it to my hosting/server. Then, the application will read the text which I already save.. So far, I can only make the application read it by using WebBrowser control and navigating it to a specified URL. Example: [URL](or message.txt) Which I modified from the website not from the application. I want to modify the text or html files from my application.
View 6 RepliesI want to read data (read only) from excel files
I use this connection string
Con_BarCode = New ADODB.Connection
With Con_BarCode
.ConnectionString = "Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm,
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I'm trying to filter the results of a xml file. One of the fields I've been requested to filter is the attribute price of each node. The problem is the xml is from a spanish source and the prices are with decimal separator being , instead of . and thousands separator is , instead of .I'm trying to get an xml file filtered where only nodes withprices lower than one supplied appear.
The xml structure is:
<RoomStays>
<RoomStay InfoSource="" Price="201,60" Discount="0" MealPlan="Sólo alojamiento" MealPlanId="1" Provider="Marsol" ProviderId="3" HotelName="HOTEL LA ESTACION" Rating="" Latitud="" Longitud="">
[code]....
I've tried to filter using XPath and Linq2Xml. I've come to the conclussion I have to replace , with . and . with , but I get 0 results.With values below 1000 where there is only , I've got it using:
doc.XPathSelectElements(./RoomStays/RoomStay[translate(@Price,',','.')<=256.78])
But when there are prices above 1000 with thousands separator . it doesn't work, so I tried:
doc.XPathSelectElements(./RoomStays/RoomStay[translate(translate(@Price,'.',''),',','.')<=256.78])
But it returns 0 results (I tried to use replace function instead of translate to remove the . characters but I get an exception).
I have two classes, one nested in the other. [code]Neither "Name" or "ID" are unique between operations and records.I wish to construct a dictionary using LINQ = Dictionary(Of String, Of List(Of Integer), whereby the keys are uniqe examples of Names in my collection and the values are the collective set of distinct IDs that are associated with those names.
View 2 RepliesHow do I work out what the namespace declaration is for the Extension node?I want to return all of the child nodes under: GPO->User->ExtensionData->Extension..[code]I get the following error: Sequence contains no elements..Also, the XML sample I have provided is only a small snippet, the ExtensionData->Extension nodes can be nested in different areas, so I was hoping to find the way of specifying the full path.
View 2 RepliesThe LINQ VB code below is to read the first record data for database table
ProductTable that has 3 colounms (or 3 fields):
TableCol1, TableCol2, TableCol3. The reading data is stored at variable
MyArrayFirstRow.
'-------start LINQ VB code in Visual Studio Web Developer 2008-------'
Dim MyArrayFirstRow
[Code].....