C# - Working With .net Combo Boxes?
Mar 10, 2010
I have a form which has a Combo Box Control. I have selected the drop down style property to DropDown. I have also set the DropDown Width to 250.I have set the auto complete mode to suggest and the auto complete source to listitems.it works absolutely fine when i click on the drop down. but when i type in somethin, the auto complete mode activates a drop down which has a small width.i wanna know how to increase the width of the auto complete drop down via code so that the list items are viewed properly.I am using C#
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May 4, 2010
How can I set something to the default option when the form is loaded? Meaning...If I want the combo box to have the options of "Hoops,Jams,Dunks", how can I set "Hoops" to be displayed in the combo box before it's clicked?
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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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Mar 20, 2009
what is the syntax to clear a combo box and also a list box?
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Nov 30, 2009
I am trying to create a WPF browser application that allows you to search and display recipes. The combo box presents choices, the Ingredients display in one list box and the "cooking" instructions appear in the other list box. What's happening is the first time you make a selection from the combobox nothing displays, and this could be happening because the first line of code under Selectionchanged clears the List Boxes however, it should be populating those list boxes with content, shouldn't it? Anyway, as you make other selections List boxes 1 & 2 get populated but they do not match what displays in the Combo box, i.e. if you select "Easy Taco Dip" any random recipe might appear in List Boxes 1 & 2.
Option Explicit On
Class Page1
'User Makes a selection from the ComboBox which populates List Boxes 1 & 2
[Code].....
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Oct 8, 2011
I was having a heck of a time populating a gridview combo box.I learned a ton in the last 48 hours but would really like to know the answers to the bottom three questions.You guys are the experts, so I'm hoping you will enlighten meBut the summary of it is below:I was never able to get the ComboBox to bind to the data source. I tried everything until I turned blue. So I went to the basics and coded all the automatic stuff. I'm curious as to why the automatic binding didn't work. Perhaps its because my gridview datasource was LINQ.Here is how I pulled it off. I hope someone down the road benefits from the last 48 hours of my delima:First of all, know that I have two drop down lists on my form, one is the GPField and the other is the BankField. These are already populated DDLs that are static. So I used them to cheat on the values instead of using enums.
Sub fillGPFieldListDDL(ByVal obj As Object)
Dim db As New CompanyDataDataContext
Dim myConn As New Connection With {.ConnCls = ConnCls}
[code].....
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Jan 26, 2011
i am using a couple bound comboboxes in a bound datagridview. It seems though, when the combo's are changed, and the tableadapter is filled again, the changes are not being saved to the table. Is there a special trick to getting the data in the combo boxes to saved when the values are changed?
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Apr 14, 2010
I have two combo boxes: cboRepairCategory (plumbing, landscaping, etc) and cboVendors. I am using Stored Procedures in SQL to store the data from my database and then load them into the combo boxes.The cboRepairCategory will be loaded first. Once the user has selected what type of repair it is I want it to restrict the amount of vendors that can be selected, so instead of saying:CREATE PROCEDURE dbo.up_Fill_Vendor_Combo
AS
SELECT VendorID, CompanyName
FROM Vendors
[code].....
I would select only the vendors that have the RepairType of say Landscaping, so thecboVendor would load now only Vendors with Landscaping instead of all vendors.My question is this: Is this done in SQL in my Stored Procedure or is it done in VB in my functions for my combo boxes. I've never tried this before I am totally lost on it. I have fiddled with the code on both ends but to no avail.
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Aug 19, 2010
im trying to learn how to code more efficiently and was wondering how to preload combo boxes better. im working on a project atm that has many comboboxes with the same menu information. how to i link the information in a sub procedure when the comboboxes all have different names?
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Jun 9, 2011
i've been searching everywhere to try to get this setup. I am running Visual Basic 2008 I have 1 Combo Box that Has 3 Entries, Kyocera>Konica>Toshiba I have a 2nd Combo Box that has entries for each of those manufactors ...Kyocera has 3035,4035,5035....the konica has c250,c352,c452......the Toshiba has c3520, 4520
[Code]...
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Jan 12, 2011
i've been searching everywhere to try to get this setup. I am running Visual Basic 2008 I have 1 Combo Box that Has 3 Entries, Kyocera>Konica>Toshiba I have a 2nd Combo Box that has entries for each of those manufactors...Kyocera has 3035,4035,5035....the konica has c250,c352,c452......the Toshiba has c3520, 4520
I want it so when i click on Kyocera the 2nd combo box only reads 3035,4035,5035 and when i click konica it only reads c250,c352,c452 etc etc
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Oct 14, 2009
I have an employees form with the employees home anddress and work address. I am working with VB
2008 Express.In each address I have a combobox bound to a table of the States.Wn I select any state
in either one the other is locked to it. How can I break this synchronization.I tryied using a
different dataset, another bindingsource, with the same results.
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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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Jul 15, 2009
I am using the following code for populating the combo boxes in my application. It is really nice. If any one requires, may use this. It takes three parameters. The first, the name of the Combo Box and the second, the SQL Statement to populate the combo box and the third is the number of column to be displayed (from the SQL statement)
[Code]...
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Mar 20, 2010
I need to know how to clear what is currently in the combo box with a 'Clear' button. Basically, I have a combo box with a list of destinations for the user to choose from. Say the user selects Australia, when I click a clear button, I need this selection to disappear, and be ready for the next user to select a destination.
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Oct 15, 2011
I am trying to get this Program to print. Most of it is working correctly except for the part of the Fragrance. When it prints it is printing the whole list not what I selected. The exterior and interior are printing correctly and I tried to set the combo box up the same way. I did the debugging and I can see it loop thru the printing process over and over to get all the names in my list. I just don't see why it is doing it or how to stop it.
Public Class CarWash7
'Declaring the Exteroir constants
Const EXTERIOR1_String As String = "Hand Wash"
Const EXTERIOR2_String As String = "Hand Wax"
[code]....
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Oct 10, 2009
In my program, I have recently found it necessary to include a settings window. Here, there are two "Combo Boxes" which the user can click on and decide what to select. For example, in FireFox, under Startup and "When Firefox starts: you have a selection. This is what I want integrated into my program. Also, when the preferences have been selected, they can click an "apply" button in which their input can be recorded into a settings file. At this point I do not know where to go. Another important thing you should know is that all of the input is based on "Yes/No (Boolean).
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Jul 20, 2009
I am pretty new on programing and for the past 2 days Iīve been trying to paint a table grid based on the selection made on 5 combo boxes. My problem is that I am trying to fill the combos based on the selections made on the other combos and really I am going insane. I have found a couple of examples that show how to do this using JavaScript but I donīt think this is the best solution. i would like to do this using a stored procedure which I think is more efficient. My db is on SQL 2000 and I am using asp for server script.At the moment all i have is this, which really doesn't do very much, all it does is composing the where clause so that whe i call the stored procedure if filters the results based on the combos, but ofcourse the combos are at the moment static: [code]
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Jun 5, 2011
I have four comboxes all containing A,B,C,D. My problem is if I have chosen letter A on the first combobox, the last three won't have letter A anymore, then on the second combobox, if letter B is chosen, the last two will have C and D and so on.
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Feb 5, 2009
i have connected my form 1 (User Details) to an sql server. On form 1 there are a couple of textboxes and 1 combo box. The textboxes all work fine however the combo box doesn't.
This is what my program is meant to do; when the user clicks Add (btnAdd) then edit (btnEdit) and inputs their information the clicks save (btnSave). Their details get stored on the sql server. This works fine so far. However when they call upon their details using search (btnSearch) the textboxes all appear correctly but the combo box remains blank.Here are my code sample's for btnAdd, btnEdit, btnSave and btnSearch, i'm not sure which one is making the combo box appear blank:
[Code]...
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Aug 19, 2009
I'm doing an application which uses the Database Wizard to link the textboxes, labels, and combo boxes to the data base. (Visual Basic in Visual Studio 2008). (Visual Basic 2008 by Shelly Cashman-Chapter 10)There are two problems: One of the combo boxes has the unique key identifier. You are supposed to be able to use the combo box arrow to select one of the unique keys. Every time I click on one of the unique keys to see the records connected to it, VB acts like I'm trying to input a duplicate key. My teacher hasn't been able to figure this one either. If I was connecting the code, I could fix this but I have no clue since I have to use the Database Wizard on how to fix it.
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Apr 9, 2010
I don't know how to ask what I'm hoping to achieve, so I'll give you an example.
I have two tables in my database...
Items...
Fruit SupplierCode Price
Banana
1
2.99
[Code]....
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Mar 20, 2010
I am building a simple GUI to view data within a database. I am getting stuck when it comes to filtering data. I have followed Beth Massi's video entitled How Do I: Filter data on the client?
However my datagridview will not filter, it simply moves the highlighted cell down to the location of the item selected in the combo box. The items in the combo box are also repeated as opposed to grouped by what they they are called, for instance I have a column called region and every cell contains the text "West" and the combo box just shows a list of all the cells as opposed to just one.I followed the video several times and every time this happens. Even with a new project. Could it be because my data isnt a table but a query of several tables? I can filter on this data in excel and access easily.
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Feb 24, 2009
i wanted to link options selected from Comb box A (general) to specific options in combo box B (specific). I want to pick a word in Combo box A that has specific words/phrases in Combo Box B show. But not all the words to show in the combo box B if they aren't associated with the Word picked in Combo Box A. Ex.When "Soda" is picked in A, only "Coke, Sprite, Fanta" should be visible in combo box b, not everything else.
This is the code i used to make the boxes, but i don't know how to link them. Do i use an If/Else/ Case Else statement or what?
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' fills the combo boxes with values
[Code].....
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Oct 2, 2010
I have a single table that has (3) Fields displayed in their own combo boxes. Right now they can only be sorted by one set of criteria. Unfortunately that leaves the other (2) Combo Boxes in random order. When "One" of the values, in "One" of the combo boxes is updated, ALL 3 of them jump to the same record and display the correct data. This part works as designed.The problem is, I need to have a way to sort the other (2) Combo box's data, which is also populated from the same table, AT THE SAME TIME, so that all (3) present sorted data in each of the (3) Combo Boxes. Then when one of the combo boxes is updated, ALL (3) will get updated, just like they do now.THis data populates three of the cells in a data grid, and then the underlyting table(s) after saving. Like I said, the (3) work, but only with one of the orders sorted. I need the same exact functionality, but with (3) different sort orders on the (3) Boxes.The (3) Combo Boxes are:
1.) cb_PlayerNumber - A Sorted list by the Player's Number (2 Digits as String)
2.) cb_Lastname - A Sorted List By player's Last Name (String)
3.) cb_FirstName - A Sorted List by the Player's First Name (String)
The table these three combo boxes is populated from is the "Players" Table. they all populate perspective colums in the "Gamedata" Datagrid, along with selected data from combo boxes populated from other tables which, when saved updates the "GameData" Table.
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