I've run into a bit of a roadblock trying to figure out how to programmatically not allow the same data in multiple comboboxes. I'm usnig VS2008 and I have 3 comboboxes on a form, all with the same data, say "apple", "orange", and "red". The comboboxes are nothing more than a user definable sorting method on which gets calculated first. When I use the .SelectedItemChanged event on any of these, I'll obviously be duplicating. Any idea on how I can program to automatically switch the combobox that is duplicated to the value that is missing? I don't want to hard code it as further down the road I will have up to 7 comboboxes. Below is what I started with coding. Not sure if it is the best way to go about it, but it works on 4 of the 6 combinations.
I need to sort an array. I need the most repeated strings at the start and the least repeated at the end. Any easy way to do this? My brain is currently fried
have a project due tomorrow and this is the first part I am so close to getting the answer but when I click display nothing appears in the list box.txtLetter.text is the letter I input from A to Z and Display is what needs to be displayed in the list box.The function selects a letter and finds the letter in an array an
How would you add data source to your combobox from a combobox that is connected to the access atabase?they are both ın the same form of course and the software language ıs Visual Basic. I ve got two comboboxes that I need to connect with eachother combobox1 is showing the "itemsonsell" from the "table_items" table from my access database, the second one should show the "prices" value from "table_items" depending on which "itemsonsell" item is chosen on combobox1,I ve done the solution below,but it didnt seem to be working,it is showing all the "prices" that are under the "table_items" table's "prices" class.
this is a subset of a previously posted problem, I have narrowed down my issue and am reposting a question from this thread: [URL] I have apparently confused the compiler by renaming some comboboxes in Visual Basic .net express? (See relevant code below) I think the confusion is in who should handle what, with two routines named with variations of ComboBox1 and one handling the other ( it confuses me just trying to interpret it mentally):
I have a form with 4 comboboxes and a button. The first combobox is enabled, but the rest of the controls are disabled. When the form is opened I fill the first combobox (cbxMethod) with a datatable. When the user selects something in cbxMethod the next combobox (cbxStudy) will be filled and so on. When the last combobox (cbxAnalyte) has a selected value I want to enable the button and give it focus so the user can move forward with the program. I basically want to force the user to move from one combobox to the other, until all are filled.I am currently using the SelectionValueChange event, but this event only fires when the user changes the value with their mouse or hits the Enter key, not when the user hits the Tab key.
Public Class frmCalculatedAnalyte Private cv_dt As New DataTable Public Sub New()
I have a form that lists all of the clients in a DataGridView and when I click on a column that is a Link I want the data to populate into the form I use to capture. My problem is that when I click on the link all the TextBoxes on the form are filled correctly but my ComboBoxes are not.[code]
I'm using VB 2008 Express I have 2 Comboboxes, and an Access Database with 5 coloums, I have managed to connect to the database and populate the first combobox.But I then wish to use the second combobox to filter the data further. ie 5 coloumns Country, City, Cinemas, address, Tel.no I wish to use the first combo to select Country, then use the second to select city so that if there is more than 1 city in the country coloumn I can select it and then I wish to display the results of the other coloumns in textboxes/labels
I am having difficulty trying to fill two different comboboxes (cbo) with data from a database. More accurately, the 1st cbo gets filled correctly, but when I attempt to do something similar with the second, I'm getting an error about not being able to use the & Operator in my SQL string (Operator is not defined for string and DataRowView types). So evidently the SelectValue from my combobox isn't acting the way I expect.
The overall goal of what I am attempting to do is to fill two cbo's, one with a list of contracts and a second as a list of parts given the selected contract from the first cbo. There are 3 tables in the database that I am drawing the data from: the "contract" table, the "parts" table, and a bridge table called "partList" that has foreign keys pointing to the two other tables. The first cbo is a basic query to the "contract" table using "ContractName" as the display member and "idContract" as the value member. The 2nd cbo I would like to display the name of the part from the "parts" table but use the id of the part from the "partsList" table, and to further filter this list based on what contract was selected.
I am writing the code in VB.Net from VS 2010, storing the data in a MySQL DB, and using a DBFactory to create all the components from ".GetFactory(MySql.Data.MySqlClient)"Below is the code that has the two places I am attempting to fill the two cbo's. Also if there is a better way to handle this, please let me know.
my question is how to filter other comboboxes based in first combobox whish is having same data as all.i am using visual basic 2010 and a ms access database which is connected with code.a vb form have five comboboxes and all comboboxes are field with same data with this code:
Private Sub loadsubject() Dim OleDBC As New OleDbCommand Dim OleDBDR As OleDbDataReader
I have created a form with three comboboxes. means FirstNameComboBox MiddleNameComboBox LastNameComboBox All fields are select ( name ) from a "CustomerName" table. "CustomerName" table is have more than ten thousand records. I am use three binding sources its worked great but it is very slow bcz three comboboxes are filled data on form loading time. I am using visual studio 2010 (visual basic).
I have an edit Contact Form that pulls data from access and loads it into textboxes and comboboxes. The text is working fine, but I am trying to pull a number from the ddatabase and display that value in a combobox that already has selections in it, so the user can edit it. For example the combo box is filled with 1,000,000 - 60,000,000 and if the number in the database is 2,000,000 I wan the combobox to display 2,000,000 Here is the
[Code]...
I have tried selectedtext, selectedvalue, and selecteditem but none of them work because its a number.
I need to write client / server application... I need that client write it`s data in textboxes or comboboxes or check any checkboxes and etc. but I need that this info saved not in it`s own computer,on server...
The AreaOrigin is filled with lots of diffierent strings but a lot of them are repeated. What i need to do is distinct the strings but also show how many times they are repeated in descending order.
I want to get random numbers between 0 to 100..But i do not want the random number to be repeated.
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim objRand As New Random objRand.Next(0, 100) End Sub
Suppose first time random numb generated is 10..Next time if same random number is generated,den i want to get the other random number..
I am trying to populate a VB.net dropdown box which is repeated in a datagrid. Basically I have a bunch of images and the user needs to select from a dropdown listwhat colour the item is so that I can then save it in the database.
Dim DDLPlayColorList = New DropDownList DDLPlayColorList = dgImages.FindControl("DDLPlayColorList") Using oConn As New
However the Split() function cannot translate to a SQL equivalent, and so this can only be executed in-memory, which is excruciatingly slow by the time any number of records are involved.
The SQL to do this would be something like
WHERE Description LIKE '%word%word%word%'
And that's as far as I get - I can't work out how to get that SQL generated by LINQ to Entities. I tried the ugly hacky .Where(Function(x) x.Description.Contains("word%word%word") on the off chance, but I'm almost relieved that it doesn't work!
I'm trying to create a form with a lot of repeated components. I'm making a touch screen control system with a GUI in VB.net. I would like to make it so when a textbox is pressed a form pops up (form1.show()?). This form is basically a number pad. The user can press buttons (0-9) to get the desired integer to appear in a text box in the popup form. When the user presses an "Enter" button, the popup form returns the integer value that was entered to the initial textbox pressed.
So although we have plenty of keys from our subscription, to minimize tracking and confusion we just want to use2 or them over and over as we install, test, extended test, wipe and reload. Eventually we would have to recycle any way. Much of this will be scripted /automated and we were wondering what kind of problems we will run into for the activation cycle (human intervention required, phone call, etc.) Mostly working on Win7 (all versions) but still need to do some Vista and even XP.
The known part is the [0] or [1] or whatever number in the brankets.the unknown part is the rest of the message.So if i have this string i want to cut it to smaller substrings that start with [ and end before the next [ .To make it more tough, sometimes, before the next [ there is another message that comes like: Jun 19 17:13:40 2012 timestamp And after that it continues with the next [
how to create a Auto repeated Mouse movement.I wanna create a Form, with a button "start 01" and "start 02",so if I click on "start 01" button, and i open my other applications, and once I hit the F1 button (on my keyboard) the mouse will auto move from point A to B, and it will keep on repeat until I hit the F12 button, then it will stop auto moving.and if I click on the "start 02" button, and II open my other applications, and once I hit F1 button (on my keyboard) the mouse will now move from D to E, and it will keep on repeating it until I hit the F12 button, then it will stop auto moving.
Actually I am trying to make a datagridview in which there r 3 columns...payment_no, due_date and payment_date. In this DGV I want to show 5 rows (it depends on no of payments) of above 3 columns, something like this...
payment_no due_date payment_date 1 20.02.09 (filled by update query) 2 20.03.09 (filled by update query) 3 20.04.09 (filled by update query) and so on........
