Preventing Duplicate Selections From Multiple Combo Boxes?
Jun 10, 2011
Ive got 10 comboboxes on my form, each of them have the same items. I'm trying to get so that if I pick something from the first combo box it doesnt show up in the list for the 2nd box, etc. Also, I didnt want to just remove the item, incase the user changes their selection in a previous combobox.Example of the code I used, as im on a different computer right now.
Code:
Dim cboList As New List(Of String)
Dim index1, index2, index3, index4, index5, index6, index7, index8, index9 As Integer
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code]....
Rest of the comboboxes have that last piece of code, with the boxes and stuff changed to the correct ones.Problem is that it doesnt remove the previous selections correctly.
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Aug 6, 2009
Ive got 10 comboboxes on my form, each of them have the same items. I'm trying to get so that if I pick something from the first combo box it doesnt show up in the list for the 2nd box, etc. Also, I didnt want to just remove the item, incase the user changes their selection in a previous combobox. [code] Rest of the comboboxes have that last piece of code, with the boxes and stuff changed to the correct ones.
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Nov 1, 2009
I'm using Vb .net 2008
I could use some advice/examples to acheive the following:
I have 1 form, 4 text boxes, (textbox1 ,2, 3, 4)
Textbox1 and Text box 3 and single line text boxes.. Textbox2 is multiline.. (a description field which can be as long or short as the user desires..)
Textbox 4 is a large multi-line textbox that will contain the output of Textbox1,2,3.
I need to find out how to output the contents typed into Textbox1,2 and 3 into Textbox4 while maintaining formatting..
For example, contents of Textbox1 should always be the first text displayed in textbox4, immediately under that should be the contents of Textbox2, and under that, Textbox3
I want to ensure that the text is displayed in that order even if the user enters information into Textbox3 first.. and still displayed in the proper order if Textbox2 has 1 line of text or 20 lines of text.
How could I do this? How can I make the text from one box always be inserted before or After text from another specific textbox when its displayed in the destination Textbox.. (think of Textbox4 like a "preview window" of sorts.. which will later be outputted to an actual txt file.
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May 17, 2011
I have a school project where i have a form that works as a class registration. There is cboGradeLevel and cboCourse and cboNumber. If cboGrade level is freshman i only want the numbers that start with 1 in cboName to be displayed, sophomore =2, junior =3, senior =3. Then i want cboCourse to work the same for the second number in cboNumber. english=1, history=2, math=3, science=4. So if freshman and history were selected i only want the numbers that start with 12- to be displayed. What can I use to make this happen?
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May 13, 2011
I am very new to VB 2010 and SQL This is my first project.
Have multiple combo boxes that can use the same dataset.
The issue I have is that when I select data in one combo box the other combo box will change to what i selected fo rthe first box and visa-versa.
The only way I found around this is to create a new dataset for each combo box.
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May 3, 2012
First i am pretty new to coding and everything so yeah...I wish to make a distance and fuel calculator as my project. Included will be multiple combo boxes with different sets of information (The manufacturer of the vehicle, model of vehicle, the vehicles fuel use per 100Km, its transmission type, users choice of where they will depart from and arrive etc.) Is it possible to achieve this without using a lot of combo boxes? I've experimented using if statements for example:
if combobox1.selected item = "Holden" then
combobox2.visible = true (it's bad i know)
Then from this they would choose their model type in another combo box and then choose their transmission type etc..I don't want to use this because then it will mean i will have to do it for each and every combo box for each and every different set of data because making one 'visible = true' i will have to make the other 'visible = false' and this will cause problems when i start adding a lot onto it.
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Jun 14, 2011
ok so What I am trying to do is have one combo box with employee name and once you choose the employee name for it to populate another combo box with the pay periods that the employee has in the database. So far I have that down and here is my code for it:
[Code]...
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Apr 21, 2012
how to make this save multiple combo/text boxes instead of just one, here is my save code which
Private Sub SaveToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripMenuItem.Click
Dim Save As New SaveFileDialog
[Code]....
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May 13, 2011
Bind multiple combo boxes to same data table with minimal code
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Mar 22, 2012
I am trying to create the code which will stop duplicate entry of an Account Number being entered in the column 'Account Number'. The user is to input an account number (three digit account number i.e 153) using an input box and this will then be printed into the A column.What is the best way to prevent duplicate account numbers being entered?
The code I have for the input/account number array so far is:
[Code]...
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Apr 28, 2010
saving data from a text field and multiple combo boxes to a file on a server in visual basic 2008
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May 10, 2010
I have 5 combo boxes that need to show the same list of items that come from a single dataset table. I have managed to bind the datatable to the combo boxes no problem at all.. but when I run the application and select an item from one of the combo boxes all the others change to the item I selected. After some research I believe that this problem is something to do with using the one datasource so I have tried assigning the dataset datatable to 2 different variables and used them as datasources for 2 of the comboboxes but the same still happens.
A work around to this I can see is to call the same methods and SQL select statements 5 times over to get individual datasources for each combo box but this doing that sounds crazy to me. how I can get around this easily? Code snippet below shows 2 combox boxes and their datasources. I'm using VS2005, .Net 2
ComboBox1.DropDownStyle = ComboBoxStyle.DropDownList
ComboBox1.DataSource = AllergyListDataSet.Tables("ListOfAllergies")
ComboBox1.DisplayMember = "Condition"
[Code]....
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Nov 20, 2010
I need to to able to save multiple text-boxes and a combo-box to a text file. the thing is, when I go to save, I check out the .txt file manually and its saved all in one line, no spaces. when I go to "read" it with the 2nd part (<-----this is a 2 part Challenge) it even reads all from that one line in the text file. What i'm asking is how can I make my text-boxes saved in the text file on different lines. [Code]
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Nov 3, 2010
So as the name states; I am a newer coder.
This is the code i have:
Public Sub RandomNumbers()
Dim s(4) As String
Dim RandomNumber As Byte
I don't know if you can tell what I am trying to do here, so I will try to explain. I what to create for random numbers and place them into for different text boxes. I also would like to do this with combo boxes and their selected indexes. So if the combo box has 10 items in it; the new selected index would be the random number generated above.
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Jan 23, 2011
I'm in the middle of creating an application that will be used to input customer information whilst the customer is speaking to someone over the phone. This involves the customer giving the employee information such as name, address, postcode etc and the employee inputting that information into text boxes and combo boxes that are in the application.
What I would like to be able to do is after the customers information is given over the phone, I need to be able to send that information to a database which will probably most likely be done by button click. In this case, I'm using Microsoft Access. I'm also hoping that I can do this within Visual Basic coding.
The database is set out with multiple tables which include a customer table and a ticket table and both have multiple fields such as first name, surname in the customers table. Both of these tables are in use with the information that the customer gives over the phone.
I've already asked on other forums and people are where replying giving me third party programs that I could use to implement this, something I don't really want to do.
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Jan 23, 2011
I'm in the middle of creating an application that will be used to input customer information whilst the customer is speaking to someone over the phone. This involves the customer giving the employee information such as name, address, postcode etc and the employee inputting that information into text boxes and combo boxes that are in the application.
What I would like to be able to do is after the customers information is given over the phone, I need to be able to send that information to a database which will probably most likely be done by button click. In this case, I'm using Microsoft Access. I'm also hoping that I can do this within Visual Basic coding.The database is set out with multiple tables which include a customer table and a ticket table and both have multiple fields such as first name, surname in the customers table. Both of these tables are in use with the information that the customer gives over the phone.
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Feb 27, 2009
I used this code to created 2 combo boxes General and Specific...and Only show Specific (Combo when Combo A is chosen.....What i need now is to know how to assign specific values to the items in combo b (Specific).??? If i chose a sode, Fanta, i want the total price to be $10.00 (this price will show up in the finial price box..
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May 22, 2012
I am developing a program that makes it easier for users to log on to a website and search for specific data. I have the first portion finished in which I have a form with the Ax Web Browser control.
The web browser control navigates to a local website and automatically logs in for the end user. This is done by using code which automatically fills in the username and password and then submits the form to logon using something similar to this: WebBrowser1.Document.Forms.Item(, 0).elements("txtUsername").value = "user"
Once logged on - there is a search page which contains a combo box and list box. I am trying to set specific values for the combo box and list boxes.For example - the combo box on the website is titled: cbxDate and contains the following values: Today, Yesterday, This Week, This Month.
A list box titled: lstArea contains the following values: Zone A, Zone B, Zone C, All.I am trying to figure out if there is a way through code to select, in this example, "Yesterday" in the cbxDate and "Zone B" in the lstArea on the webpage.If anyone knows of a solution, please feel free to let me know. Be advised that I am using the Ax Web Browser Control.
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Nov 16, 2011
I am getting an error when i try to populate some combo boxes with a value, the combo box has values in and the right amount the code is getting the right number.
the error msg is "Object reference not set to an instance of an object."
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Jan 7, 2010
i have a textbox1=Year and a textbox2=Month and a datagridview and as datasource access i want to know the code if i search for a year in databinding and how to look for a month of the focused year?
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Sep 18, 2011
I have 2 listboxes, listbox1 holds File names, listbox2 holds fullpath of the files(listbox2 is hidden just to keep things looking tidy).
What i want to do is (using multiselection) is select files in listbox1 and have listbox2 have the same files(indexes) selected as well.
i am rather new to this but i have tried several ways but listbox2 only selects the first selected file from listbox1.I am using vs2010 visual basic & wpf?
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Sep 23, 2011
In a small app for demonstrating the use of Regular Expression matching in a text box, I have set it up so I can select one of the matches at a time in the text box to emphasise it. Is it possible to set up a text box so several isolated sections in the text is highlighted so all of the matches are highlighted at the same time. I'm thinking not and could use a picture box to do this but with all the hidden features in vb.net, I wanted to be sure since this would be very handy for my project and would be more useful for large amounts of text. I've read you can make multiple selections in the text box of a combo box.
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May 31, 2010
I'm using this code to select all the IDs from the mysql database:[code]The command will return all the names. How can i process each one individually ?
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Oct 20, 2010
Working with a couple of listboxes to display userid and emailaddress. I am writing an application for viewing SSRS reports instead of using the Report Manager. I am able to select the report and also send an email to users with a web link to SSRS report so that ReportViewer comes up for them to view, export or print the report. Currently I am only able to send to one recipient and I'd like to be able to send to multiple recipients. However I am having difficulty with the multi-select from a listbox. I have set the SelectionMethod to MultiExtended and so I can select multiple items from the listbox. Here is my code -
[Code]...
and I also add a messagebox.show to display my values, in EmailAddressTo variable, it displays "System.Data.DataRowView" so it was not able to capture the email address at all. Then if I debug further I eventually get the error msg - "The specified string is not in the form required for an e-mail address." because of the empty variable. Using SelectedValue, I was able to get at least the first email address but not the second one.
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Mar 20, 2009
what is the syntax to clear a combo box and also a list box?
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Apr 5, 2011
I am a new student of Visual Basic. I am using Vis. Studio 2010. Is there some sample VB code that I can gain access to that shows how to test on multiple selections that were selected within a listbox using the "For each" construct? In this scenario, multiple items have been selected but not 100% of them. I need to know how to test on which ones are selected as I examine each one in the list using the "For each" construct.
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Nov 5, 2009
My name is Tim I'm having a problem getting my multiple selections from my list box to display in the results label and there is no examples in the text any how I'm thinking I need to use a loop to get it done. is this evern in the ball park?
Option Explicit On
Option Strict On
Option Infer Off
Public Class MainForm
[code].....
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Oct 23, 2009
I have code that works to place two items in listbox into two textboxes when selected (multiple select extended).
Private Sub lstOutput_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lstOutput.SelectedIndexChanged
Dim i As Integer = lstOutput.SelectedIndex
[code]....
I need also to be able to modify the data in the textboxes and replace the lines in the listbox. The reverse code doesn't work properly, it only replaces the first selected item. The "lstOutput.Items(i + 1)" appears not to lead to the second selected item.
Dim i As Integer = lstOutput.SelectedIndex
lstOutput.SelectedItem = lstOutput.Items(i + 1)
lstOutput.Items(i) = txtName.Text
lstOutput.Items(i + 1) = txtPhone.Text
I have scoured the web for ways to manipulate the selected index/indices, with no success.
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Mar 29, 2009
need help please on how to prevent multiple instances of a form at runtime in vb so tha when a user clicks a button to load a form it loads an if the user clicks the same button again whilst the other instance of the form is running it doesnt open a new one but insted sets focus on the currently running form.br2
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Dec 14, 2011
I am trying to get duplicate values from dgv into a combo:
[Code]...
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