I am trying to figure out if i can assign a numerical value to an item in the check box. I have two forms one with the checkbox and another that will show the total amount based on what was checked in the checkbox.
View 2 RepliesSo i have a text in my textbox something like this: [code] Let say that text is divided in 3 fields. Name, Age, Salary. Each field is separated by "*"How do i check if there is no empty field using VbNullString?And how do i check if the second and the third fields are numerical?End the execution if the fields are not correct with a message
View 7 RepliesI am checking for empty string values, but how do i see for the Quantity text box if the user chose only numerical values after the empty string. For example...
[Code]...
I wish to create a drop-down list box with items in it. Easy to do and done that. What I also wish to to is assign a numerical value to each list item. I believe under VB6 is was done using the list's `Value` property to set and get the item. It's so I can write a one byte value to a file but display a text value on the form. Don't wish to mess wish classes and arrays, but if I have to I guess it'll be have to be done.Was looking at some examples of making in-memory arrays/datasets for a list-box but just sees like a programming overkill for the simple thing I wish to do.Put it another way....
List box item 1 = "First option". List box value 1 = 35
List box item 1 = "Second option". List box value 1 = 44
List box item 1 = "Third option". List box value 1 = 3
If the user selects "Second item" from the drop down list box then that property do I use to retrieve that list item's value `44`. Also, when I pprogramatically populate the drop-down list, how to I set each lite item's `Value` property accordingly. As in the example 35, 44 and 3 Tried using `SelectedItem` and `SelectedValue`?
assign a particular value to each item in a combo box? Or, alternatively, some similar control? Specifically, I want a drop down list to select from a list of countries. I then want to get the ISO 2 letter abbreviation for the selected country. I could have a section of code like this
selected_country = cmb_country.SelectedItem.ToString()
if selected_country = "Afghanistan" Then
country_code = "AF"
ELSE IF selected_country = "Aland Islands" Then
[code]....
but this will get rather tedious.Is there an easier way to do it? I would like to be able to assign a value to each line in the list, like
Afghanistan, AF
Aland Islands, AX
Albania, AL
then get the value for the selected item. Is this possible? If not with a combo box, then any other control?
I have a form with a lot of PictureBoxes. I created an array of these by name, but when I index the array I cant assign an image to the indexed item. In fact all the indexes appear to be nothing. Is there a way to create an array of controls and access them from the array?
View 2 RepliesI've been trying to feed a multi line textbox into a string array then check item by item if a string contains part of it.
[Code]...
I am trying to develop a recipe manager that allows a user to create a shopping list. I've already determined that I want to use a list view for this job. I want to be able to group the items in the shopping list by the appropriate grocery aisle (i.e. Dairy, Bread, Canned Goods, etc.) I'm not sure how to assign the items to the appropriate group as the user selects each item.
I haven't started actually building the application yet as i'm still in the development stage, but i have been testing the list view out to figure out how it works. i've figured out how to add items. i just don't know how to specify the group that each item should belong to.
[code]...
Just started on vb.net
I have a combo box with "yes" and "no" with i select Yes i want the label2 to change the text to "yes" likewise with "no"
I've tried to code it in a logical way as possible but it just doesn't works except for the "wtf" so i think that overall my code is correct but the way i want to retrieve the selected item from combo box is wrong.
Public Class Form1
Dim aa As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
[Code].....
How can I assign a context menu strip to a listbox item and not the listbox itself?
View 1 RepliesI'm sure it is negligible, but given that I want to assign true to a boolean field from within a method, does this choice make any difference? If so, why? field = true; // could already be true, but I don't care
View 4 RepliesI have a property called ReplacementTo and I set a value to it based on the selecteditem from the combobox, like this:
classEquipmentItem.ReplacementTo = cmbReplcmnt.SelectedItem.ToString
Now I can't use cmbReplcmnt.Text because what I actually need is the value of that SelectedItem
So problem is, if the user leaves the combobox as blank, it throws a null exception.I decided to use the IIf function then:classEquipmentItem.ReplacementTo = IIf(IsNothing(cmbReplcmnt.SelectedItem.ToString), classEquipmentItem.ReplacementTo = "", cmbReplcmnt.SelectedItem.ToString)
Unfortunately I still get the error I tried using a Try-Catch for it and it worked, but I don't want to rely on the Try-Catch, so I was wondering is there a another way to work this through?
I'm trying to assign an image which is stored in mySQL database to PictureBox item.
Here is my
...
Dim rs As ADODB.Recordset
rs = New ADODB.Recordset
Dim mystream As ADODB.Stream
[code]....
I need to create a Select Case statement to assign the per check processing fee:user inputs number of cks into textbox that i need to validate the input if user puts in a negative amount.
10 cents for <=20 cks written ea month
8 cents <= 20 to 39 cks written ea mo
6 cents <= 40 to 59 cks written ea mo
4 cents for 60 or more cks written ea mo.
Also, I have a label programmed to display the $10 monthly fee thats has to be included into the: Total monthly fees.
Here's the coding I have so far:
Const decSERVICE_FEE As Decimal = 10D
Const decTWENTY_OR_LESS_CHECKS As Decimal = 0.1D
Const decTWENTY_THRU_THIRTYNINE_CHECKS As Decimal = 0.08D
[code].....
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..
View 4 RepliesIm making something like a save file dialog that saves a file based on the text of a listview1.selected item.How can i check if an item is selected? How can i get its text and subitems?
If ListView1.SelectedItems(0).Selected = True Then
End If
This Returns An Error If No Item Is Selected.
I am looking to make a program to check if an item is in stock on a website, but I am not too sure about how to go about it.
View 2 RepliesRegarding 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].......................
This will check for an item in a listbox.[code]...
How do I check if an item exists in a listbox?
what is the fastest way to check if Item ID exist in the database?
From what i have done, i have an excel file uploaded to datagridview, then each itemID is retrieved line by line, then accessed the database to check if ItemID exists.
Is there a way to retrieve the whole column of itemID and then query it to MSSQL2000, then display the itemIDs that does not exist.
Is it possible to make one or more items in a checked list box collection non-selectable? I wnat to present the items to the user but not allow selection of them.
View 6 RepliesI have 20 RadioButtonLists on a page.
I need to create a validation method to ensure that at least one of these RadioButtonLists has an item selected.
What kind of validation would I need to use for this?
I am trying 2 enable a button when there is an item in my listbox.
View 10 RepliesI have a chechlistbox and i have 10 items. and items are checks randomly.
i want to determine which items in checklistbox is check.
DataGridViewX.CurrentRow.Cells.Item(0).Value.ToString
If the item is blank and no data is entered it will throw a null exception, so the question is that how can I check if the item is null or not? Even using this:
If DataGridViewX.CurrentRow.Cells.Item(0).Value.ToString IsNot Nothing Then ...
Will throw the exception!
The following code will save an item to file over and over again, but how do I save an item only once?
Dim w As New IO.StreamWriter("E:est.txt", True)
w.WriteLine(ListBox1.SelectedItem, True)
w.Close()
If, for example, number1 is already saved in the txt file then how do I not save it again, using something like the following?
dim exist As IO.FileAccess ("e:s.txt")
if exist.that.item.is.exist= true then
w.WriteLine(ListBox1.SelectedItem, True)
[Code] .....
I am using VS 2010.
How to check whether the listbox contain selected item or not in vb.net.
View 8 RepliesI have a window which has 8 items in a listview along with 2 radio buttons below the listview. The user is able to select one or more selections in the listview and turn the selection on or off with the radio buttons(live, prior to hitting the submit button), my question is how do I tell which selection was changed? I was going to put the one or more selections into a string/array and use that later for some messages once the user hits the submit button. I can almost think of it but can't quite get there, i'll be using an if/else with the .selected option in listview items but am not sure how to tell if the user, say,goes back and changes the option from On to Off(Off originally)to remove that option from the array.
View 2 RepliesI have a MenuStrip with several items in it. All I am trying to do is select(check) only one item at a time.
Example: Lets say I have a menu title Fruits, and under the menu are several fruits.
Currently, when I click on one fruit there is a check mark, good! The problem is when I click on another fruit there is also a check mark and so on. I only need the menu to check one item at a time, this will unchecked an item if I check another menu item. I tried using if statements but doesn't even come close to working. Any ideas on this?
i have create 1 listview & checkbox inside listview. how to print check item in listview.
View 6 Replies