I need to get a string from an items collection in a list box on one form to a list box on another form in VB 2008. Here is the code (I've tried a couple ways in the code to get the values over).
Public Class frmPrintBooks
Private Sub btnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles btnClose.Click
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how to add a string item to a text box, returned from another form that has a list box?
I have two forms. on the first form I have a button which calls another form that has a List Box.
When I select the value from the list box and click on the apply button then the value should be
passed to the first form that will also have a text box. The text box should contain the value of
list box.
there's a list-box with items, and say you want to modify an item in the middle of the list. You select that item and click "Modify" button and a new form appears with the previously selected item data from first form ready to be modified in a text-box. After modifying and clicking Ok the second form suppose to return that modified string to the first form and insert the modified string into the same spot instead of the originally selected item, so it looks like it was edited to the user.
View 2 RepliesOne displays a list of contributors for a charity and the amount given in a text box.However iv created another button but i need this to sort the list of names to just display the names and in alphabetical order.
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I want the Function to accept List(Of String), Array & String and similarly return List(Of String), Array & String respectively. The Function simply adds a string (month) to the input collection. I just want to use it for string, array and list with needing to think of conversions.
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I have squiz my mind out for this but no luck I have a Windows Form with a list box that gets data from a MS access Database table(table1).The table fields are NAME,SURNAME,AREA.In the list box i see the recors of AREA(for example:NY,Chicago,L,...).I want to do this,when a user selects a item from the listview and click OK Button to open a new form with the selected records(with all the table fields).How can i do this
View 4 RepliesI have a main form with datagridview containing a list of contacts:
VB
Public Class Form1
Private Db As New DataClasses1DataContext
Private Sub Form1_Load
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After saving, I get the correct message ("Saved"), and the DataGridView in the first form gets updated in real time.
But... when I take look at the data (or close and reopen the forms) the data in the database (SQL server) have not changed! What happens!
I got an object of List<List<string>>I need to bring this into a ist<string>I have no idea how to do this with LINQ.
View 1 RepliesWe're working on a big ASP.NETVB.NET website project. I need to populate three dropdownlists. To last two are independent of the previous ones. The population data comes from an SQL Server. I'd have no problem doing this with code-behind with post back but we don't want any PostBacks so I started to develop this in AjaxjQuery.
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I'm trying to solve a problem regarding types of list. First of all I have a stored procedure in my DB which does a select of a single column and I try to proceed it in my app in VB. By making a method function I declared a DataTable that loads through the SqlCommand(with the CloseConnection behavior). After that I publicly declared a List(Of String) which needs to be populated with the rows/items from the stored procedure that is on the way. Below is my snippet of the code:
Dim dt As New DataTable()
Try
If conn.State = ConnectionState.Open Then
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It's LPrefix = collection.Cast(Of String)() where I get an exception error telling me that I can't really convert it. The old fashion way is to iterate with for/for each loop but that's not what I want for best use of performance especially if the list will have thousands of rows from a single column. So basically, I want to insert those items from that DataTable to the List(Of String) without For/For Each loop.
Running on VisualStudio2010 Ultimate, .NET FrameWork 4.0.
I'm doing an assignment with VS 10 that involves making a program for calculating orders but got stuck in trying to link the "invoice" listbox on the invoice sub form to the one in my main form. The list box on the main form is where the user adds, edits and deletes products. It's working perfectly fine it's array and select codes.The receipt form also has a list box, which should display all the products entered in the main form's listbox. My question is, what is wrong with my code? The text boxes seem to be working fine:
Public Class BillForm
Private Sub BillForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lstBikesBill.Items.Add(DavidBicycles.lstBikes)[code]....
When I enter some data into the main form's list box and then click on the bill, the other list box shows up as empty.
I have the following code:
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The intention is to convert an IList of custom objects to a string equivalent comprising each element in the Ilist. Unfortunately I can't seem to find a way to get the underlying data of the custom object, and of course as in the above example, using object simply gives me a string of types definitions, rather than access to the underlying data.
I am having a problem getting a series of regex matches to post over to a list box on a different form.[code]...
View 7 RepliesThis is what I'm sure will be the first of many noob-ish questions from yours truly... I'm studying as a mature student for a Computing Degree (encompassing web design, hardware, programming and systems analysis). The programming seems to be my weak spot this year. I enjoyed C++ last year, doing basic console applications, but progamming visually with VB in Visual Studio 2008 I'm struggling!
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I think (?) this is about object design, and perhaps about structural and/or creational patterns. But a bit hard to say when I only know a couple of patterns yet.[code]But... what if we INSTEAD want each Product instance only to (in some way) refer to one instance of a specific list of Components. So we wan't to save the products list to one file, and the components list to another file. Then would I build the objects the same way, or different? So let's then say we have now Class B as below. [code]
1. Will not need to update each component variable of the products list when the components list changes.
2. If the Product object shall be shown in a DataGridView, for editing properties, it seems easier to implement the selection of the component property.
Is this wrong approach? Is it suitable in some cases, and if so, when? Are there other solutions I perhaps am not aware of that would be appropriate? Is this about structural design patterns? and if so, can the alternatives above be catagorized to some pattern type? I don't really know exactly what I'm looking for.. But I think probably I'm looking to understand whether the object design will be determined by the way the objects are saved.. And if i shall save the objects by serializing to file, vs saving to a database, would I create the business objects differently?
I have a small problem i'm trying to fetch list of directoies from 1 special ftp server wich does not support LIST command i was try this code and it works for all ftp server i have try exept this special one :
'' Get the object used to communicate with the server.
'Dim request As FtpWebRequest = DirectCast(WebRequest.Create("ftp://" & txtFTPhost.Text), FtpWebRequest)
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I'm getting error 502 which means command is not supported and app crashed. I would just simple said leave it but i have try normal ftp clients like FlashFXp and it works just fine (i can see error in the log but it just pass it and show direcoties)
I want to reorder a list of strings into a different list of strings. I am creating multiple loops to do this, however i was wondering if there was a better way to do this.
Dim values As New List(Of String)
For Each val As String In vals
If val.Contains("10") And val.Contains("Year 1") Then
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There are going to be quite a lot of these loops to do what I want can anyone offer any help or a better way to go about doing this? Note that I want the values list to return 10,10,10,20,20,20 so that lines that have 10 should be added first and lines with 20 then afterwards.
I am having trouble adding a list box to a form that I have added during run time.[code]...
View 3 RepliesI have the following code which takes input from a text box and then writes everything to a file...
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now because it's not convenient for me to type one by one the words in the text box...what i thought i could do is to find a way to feed a list of the words and then choose with the arrow keys which word it should be written to the specific file.
Dim FILE_NAME As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) & " ext.txt"
Dim i As Integer
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I have this VB.Net form and I need to know the names of all the controls on it. I would suppose that Microsoft keeps a list of all the controls on any given form I just don't know how to access it.
View 4 RepliesI am creating a text editor in Visual Basic .Net 2005. I want to get the list of filenames dragged into the MDI form. I can't figure out the proper code to do that.
View 2 RepliesI have a form with over 60 items. These are a combination of lables, text boxes and combo boxes.I am using Visual Basic Express 2010.Is there a way to print a list of all the items on the form?I mean the names of the boxes.
View 2 RepliesSo I'm doing an assignment with VS 10 at college that involves making a program for calculating orders but got stuck in trying to link the "invoice" listbox for the receipt to the one on my main form.
Let me illustrate my example:
This is the "main menu" is where the user adds bikes, edits existing ones and deletes if needed.
This is my receipt form, it opens perfectly fine and even shows the totals that are stated in my main form:
However, the listbox in my receipt form doesn't link or take in the information stored in my main form, which in this case, would be all the bikes. Here's my
Public Class BillForm
Private Sub ReceiptForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
What is wrong with it? The text boxes link up, but the list box always shows up empty when I try to add some bikes in on the main form.
I am trying to populate a form from a list of values. I am fetching data into a recordset. I have a textbox that displays the date, however, when I try to assign a date value I am getting the error message that I cannot set the textbox value to a textfield. Is there a way to assign the date value to the textbox?
lForm.txtFromDate = dgvRequests.CurrentRow.Cells("leaveStart").Value
Is there a way to print a list of all objects on a form? I have lots of textbox boxs on a form and i would like to print a lit of them.
View 10 RepliesI want have a print procedure and I want to print items from my list box in a form. The code I have doesn't print the items from the list box. Could any ones show me how to do it?
My printing
Private Sub PrintText(ByVal sender As Object, ByVal ev As PrintPageEventArgs)
'Create a headingfont so that the same piece of code doesn't need to be typed in multiple times
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I've searched and searched for an answer to my question, but as of yet, have yet to find a solution to what I'm looking for. My background - 6 months out of College (Computer Studies)
Right now I'm working on a program that is going to be used to handle database information (Access 2007). On the main form the user can select 3 pieces of required info from drop down list boxes. Those are required. Then after that they are able to enter a first name and a second name. They then add that name to a list box below. They can add as many names as they want to a list box. Then from there they have the option to either just save the info, or if required (which will more then likely be the main option) print each person in the list their own certificate. I have designed a separate form laid out the way required for the certificate.
The trouble that I'm having at this time is that I am unable to make the printing process show all of the certs that are going to print in a print preview. I have been able to get it to only show one. The form is set to load where hidden = true.
i have this In a txt file
118.97.75.226:8080,
218.14.227.197:3128
118.96.151.110:8080
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How do i get this in an array! and then how do i display each line seperately (using a variable e.g 1 would display line 1 and 2 would display line 2) this simple project is going on forever!
Ok i'm trying to declare a global list of type T (or is it <anonymous type>) i declare it in a module with something like Friend query As New List(of {whatever type i try}) the app takes some xml and parses it into a list but i need this list available to other classes and methods within the app, everything i have tried fails resulting in an error like Value of type 'System.Collections.Generic.List(Of <anonymous type>)' cannot be converted to 'System.Collections.Generic.List(Of {whatever type i try})'.
What would be the correct way to declare a list of this type? is there another way i could do this?