is it possible to add multiple strings per item in a Ilist?If so can someone point me in the right direction? I've looked on the msdn and can only find examples on how to add one string per item
View 16 Replies
For Each item As Object In ListBox1.Items
If item.ToString.Contains("http://" Or "www." Or ".com" Or ".net" Or ".org" Or ".biz") Then
I want it to check if item contaisn any of those, then it does something.
I have a piece of code that does an action to any collection that implements generic.IList<T>However to do this it needs to get the type <T> of the generic list.e.g. If I pass in a variable of type Generic.List(Form) then in my code I need to get the fact that the list is made of Forms. To add complexity the list may be empty (So you can't just look at Item(0).GetType)
View 6 RepliesI'm trying to use a variable that is simply a list of a list of strings.I've declared it as follows:
Dim iRows As New List(Of List(Of String))
Then I'm trying to pass it as a parameter to another method and I've defined the method as follows:
Public Sub Import(ByVal Rows As IList(Of IList(Of String)))
For Each Row As IList(Of String) In Rows
ImportRow(Row)[code]....
Unfortunately, when I try to run that code I get the following error where it tries to pass my variable to my method.
System.InvalidCastException was unhandled by user code
Message="Unable to cast object of type 'System.Collections.Generic.List1[System.Collections.Generic.List1[System.String]]' to type 'System.Collections.Generic.IList1[System.Collections.Generic.IList1[System.String]]'."
When I change the method definition to use the types rather than the interfaces as follows, it works.
Public Sub Import(ByVal Rows As List(Of List(Of String)))
For Each Row As IList(Of String) In Rows
ImportRow(Row)[code]....
So, is it not possible to use generics with interfaces in this way? It works fine as long as I'm not nesting them.
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
View 39 RepliesI want to know how I can check the string 'enabled' in my php page for each paragraph while being matching with each listview items that i have extract the strings from my php page?
Here's for an example: i check the string 'enabled' in paragraph one and if it does have it then tick the checkbox on the listview item 1 otherwise untick.
i check the string 'enabled' in paragraph two and if it does have it then tick the checkbox on the listview item 2 otherwise untick.
i check the string 'enabled' in paragraph three and if it does have it then tick the checkbox on the listview item 3 otherwise untick.[code]...
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
View 2 RepliesI am looking for a control to load text strings into. I want to be able to use different font sizes and perhaps font styles for each text string. I also want to be able to select each text string. I am using a rich text box to obtain the formatting I need but I don't know how to set this up so that I can select each test string independantly. Alternatively I coulg put them into a DataGridView and get rid of the lines but this would look to structured as the cell width is contant for each cell in the DataGridView.
View 3 Repliesi have an xml file that i drag drop onto a picture box and i would like to use the information in the xml file to draw a table. the values for the column widths, heights and what goes in which box are in the xml file.the table is split into three sections the title part, a header and then a body.the first challange is finding asking how i can expand what i have to withdraw all the info for the same "sections" of the table as these are contained within different parent nodes.what i have is
Dim reader As Xml.XmlReader
reader = XmlReader.Create(dragFil(0))
reader.ReadToFollowing("tgroup")[code]....
how to get 1 string to print but now i run into another dilemma. I have 3 strings, each string is just under a page long and i need the 3 strings printed at the same time (one button).
So here is my code for printing one string:
Private Sub btnSendToFile_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Print.Click
PrintDialog1.Document = PrintDocument1
[Code]....
My problem is storing multiple string in the my settings to clarify more on this ill try explaine as best as i can,
'I set my value like so
Dim strSettings As New My.MySettings
'On the form load i use this
Dim itemz As New ListViewItem
[Code]....
I've been working on a small project to sort through multiple text files which have all the same strings. Basically, I am looking to sort through and create a text delimited file for future use. The below script is what I have come up with so far, and have tried several "For Loops" but found that I was lot worse off than working with the "Do"[code]...
View 7 Replieswhen i add in another checkbox it shares the same info from a radio button, so i toyed with it for literally hours, and figured out how to make another string, so i include my strings in the email body, i put ail.Body = emailmail Body = cod4and now in the email form it only includes the cod4 string? what the heck? so i figured, put the strings on the same line in the same body, but it says i need an end statement, so how to i seperate the strings to make them seperate in the body?the mail.body parts are in alignment in the application, i accidentally moved the bottom one over when i posted it, so pretend they are one under the other, then answer
View 11 RepliesI am attempting to remove information from an html file, using known 'tags' (not html tags, just short sequences that only occur where my information is). My code worked fine until part of one tag was on a seperate line. Here's the function I have been using: (OriginalString conatins the HTML file)
[Code]...
I'm using this for a single value to search for.
intPositionOfApartment = InStr(StrConv(pStringToParse, vbUpperCase), "APT") Is it possible to search for more then one value such as "APT", "UNIT" ?
If yes please show me an example of how it should be coded.
I need to pass two variables/strings to a background worker at the same time. he background worker needs to return the first variable, and the time consuming boolean result of the second variable.From what I have read, I can only pass an object that contains multiple variables.This is where I get confused
View 1 RepliesHow do I use the IList(Of T).Max function in my example below?
Dim myList as IList(Of Integer)
For x = 1 to 10
myList.add(x)
Next
'Error: 'Max' is not a member of 'System.Collections.Generic.IList(Of Integer)'
MsgBox(myList.Max())
Anyone know right off hand a cleaver way to chop up a Text value from a table... Scenerio is this I have one table with a name (Smith, Timmy Alan) in a table text(30) format. I can pull the value to a string in VB but I want to only take the last name for one string and the first for an other string.
View 4 RepliesSo, what I have is a windows form with multiple user selections. I need to display one message box upon click which concatenates strings based on the users input. The message box needs to show each specific reason why the user is declined. I'm typing out some really basic pseudocode below to give the basic structure of what I'm trying to do. [code]
View 4 RepliesI need to open up a cmd prompt, then run a file called adb.exe which opens a shell to communicate with my android cell phone...
Heres what I need:
My Form1
Label1.Text = "adb.exe shell"
Label2.Text = "su"
Label3.Text = "mkdir /etc/folder"
[Code]....
Heres the problem... I can execute any normal dos command automaticly, but once i open the ssh prompt (adb.exe shell), i dont know how to keep putting commands in there...
The commands are stored in strings, and i need to take the commands from the strings, and type them into the command prompt like above.
i have to develop API in .Net 4.0 which can be used in VB 6.0,i know how to use this and currently i am using my this API in VB successfully.but Stuck at one place,i have collection class and i have to expose it to VB with having functionality of List class of .Net.[code]i know that generic is not supported in VB, but i think with this declaration in VB 6.0 it creates interface class for class B as IList.but in VB using object creation of class B it doesn't provides me members of LIST in intellesense like (Add,Remove of List Class)
View 2 RepliesHow could I add ObjectCollection items to an IList(Of SomeType)?I have tried with:
For Each obj As SomeType In listBox.Items 'ObjectCollection MyObject.ItProperty.Add(obj) 'IList Next
I am creating a generic class that is Implementing IList(Of T) which requires that I implement the GetEnumorator of both IEnumerable(Of T) and IEnumerable. When looking at the members of IList(Of T) I see only one GetEnumorator function, yet it implements IEnumerable(Of T) and IEnumerable. How can I use one function to implement both interfaces when the function definitions only vary by return type?
View 8 RepliesI'm using the Dynamic LINQ library code sample to dynamically return some data. The number of columns I'm returning is variable depending on user input. I'm enumerating the IQueryable into an IList. What I need to do is step through the Ilist one field at a time. I can get one row at a time by iterating through the IList's rows but I can't for the life of me pull one field out of the collection.For example, here I'm returning two columns (hard coded for testing but in prod it will be variable depending on what fields the user chooses):
Dim Dynq = dc.dt _
.Where("RUN_ID = """ & runNumber & """ and Upper_Pressure > 95") _
.OrderBy("Upper_Pressure") _
[code]....
Now I can pull a field out of the Ilist if I know the column name with something like:
something.Run_ID.ToString
but I wont know the columns I'm using until runtime and dynamically inserting it in a variable that's set at runtime doesn't work.So in Summary I have a Ilist that looks something like this
1 | Auto
2 | Auto
3 | Manual
4 | Manual
and I'd like a way to return
1
and then return
Auto
and then
2
etc...
Regarding my college project. i'm working on a sales system . i have a form which consist of all the following information( item code , item name , item price , quantity of item ) which is display using a data grid . data input by user using text box and all this information will be stored in a database(sales database) i'm using ms access 2007. the grand total will be displayed in a text box . and amount paid will be input in a text box too , my major problem now is how to i create a reciept that will have all this information of the purcase. i have a reciept button . what the next step ? i dont have any idea how to get the reciept done.
Imports System.Data.OleDb
Public Class Form5
Dim con As New OleDbConnection
[CODE].......................
Okay, so I have a Generic IList of custom objects that I want to use as a datasource for a repeater.
Dim productRows As IList(Of MyCustomObject)()
'fill list with data
rptResults.DataSource = productRows
[code]......
i am having trouble displaying the values i get from an IList(Of T) and displaying that in a listbox found on another form. I have used a for loop to get the values from the IList, then i can display that in a msgbox. for eg:
Dim j As Integer
Dim path As String = ""
For j = 0 To best_tour.Count - 1
[code]....
best_tour is ot type IList() path keeps the name found in the list everything works fine inside the loop..but it does not populate the lst_output listbox.I have tried using files, but in vain. It just get the values from the list but does not display that on the listbox.If that can help, then listbox is found in a panel on the form2, but taking it out of the panel does not affect anything.
I am updating a legacy application, and it was reading a dll from another project for a Dictionary(of Guid, String) of items and using them.
The requirements have changed, and the method that was returning the Dictionary is now returning an IList.
This is the odd behavior of this; the intellisense is not throwing a cast error, nor is the compiler. It does not throw an error until runtime when it tries to set the Dictionary to the IList.
Example:
Dim someDictionary As Dictionary(Of Integer, String) = New Dictionary(Of Integer, String)
Dim someList As IList(Of Integer)
someDictionary = someList
why the compiler is not catching this?
I am declaring an IList:
Dim OrigVendors as IList
OrigVendors = new List( of IVendors)
I populate the OrigVendors variable and what I want to do is find all the objects that have the ID I am looking for. Then I need to update a property on that object for only the ones found. Is this do able with an IList or do I need to use some other type of collection? I am using VB.net.
In a program I am writing (in VB.NET, 2008), I have 2 classes, "Receipt" and "Group", each with similar properties, both implementing a custom interface entitled "IIDUser". In my program, I have a number of lists of "Receipt" and "Group", declared like:Friend receipts as List(Of Receipt)
I have written a few functions that apply equally to managing both lists of receipts and groups, declared like this one:Friend Function getNextAvailableUserLabel(ByRef theList As IList(Of IIDUser), ByVal startLabel As Short) As Short
Then called like this:getNextAvailableUserLabel(receipts, s)
I did all this in an attempt for interface-based polymorphism, as I thought writing 2 identical functions (except for that one would be for lists of receipts while the other for lists of groups) would be bad practice (and waste time). However, I get an "InvalidCastException" during runtime. It is explained, "Unable to cast object of type 'System.Collections.Generic.List`1[Receipt_Sorter_v2.Receipt]' to
[Code]...
