Comparing Listbox Values?
Jun 29, 2009
I have five listboxes that are populated from five different datasources basically I have connected to an MS Access database and I am running SQL queries effectively so the five listboxes are populated via datatables for example dtInterests, dtHobbies, dtMovies, DtTV and dtMusic my question is how would I compare the values that are being stored in each listbox I want the application to check each of the five listboxes and if the value is the same (in my case the valuemember is the customer id) then store the result somewhere (in a textbox)
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Dec 19, 2010
I'm working on a Website in Web Developer 2010 where the content of a text box is checked against a list of values to find a match. There must be an exact match for the user to be allowed to proceed to the next step of the wizard.
Is there a shorter method to do this using the VB 'If' statement, other than specifying each condition individually?
I've tried something similar to the following, but for the amount of values it would be more practical if there was a shorter method.
If TextBox1.Text = "User1" Then
Label1.Text = "Ok, That username is valid. Click NEXT to continue"
LinkButton1.Enabled = True
[Code]....
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Aug 16, 2010
I am fetching DataTime value of a SQL Database, LockDate. Dim diffDate As TimeSpan diffDate = DateTime.Now - LockDate minutes = Convert.ToInt32(diffDate.Minutes) hours = Convert.ToInt32(diffDate.Hours) Minutes value is showing incorrect values.
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Sep 18, 2009
I am usingh VB.net, I have two textboxes see below:
<tr id="trCheckedBy2" runat="server">
<td>
Application Checked by 1:
[Code].....
Now I want to give error message "Username can not be same" when CheckedBy2TextBox text is same as CheckedBy1TextBox. It would be good if we can use .net validator.
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Jan 20, 2011
I have a form where the user is to enter the beginning odometer value and ending odometer value. I have the code correct to check and see if there is a numerical value entered into to each text box. When the user enters the ending odometer value and that value is less than the beginning odometer value I want an error provider to stop the user from tabbing to the next field and let the user know that the ending odometer value cannot be less than the beginning odometer value.how to set this up. I have some code in there that doesn't seem to be doing the job for me.
Private Sub BeginOdometerTextBox_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles BeginOdometerTextBox.Validating
'test beginning odometer for numeric value[code]....
I have a theory that the variable for the beginning odometer value is working in the ending odometer value block of code. Not really sure about that though.
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Nov 19, 2011
I'll use this image to illustrate my question.
[URL]
Basically, how would I go about it searching through the listbox for "String 4" and then a messagebox coming up?
But, if it doesn't find that string an error message comes up.
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May 24, 2012
I'm tried creating an analog clock and I realized I was terrible at trig and gave up. So instead I'm just creating a digital clock. I'm having problems getting the alarm to go off. Lemme explain my layout, I have 3 comboboxes. 1 is for the hour, 1 is for the minute and 1 is for am/pm.
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
'The commented out variables are global
[Code]....
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Apr 26, 2011
I have 10 values to compare against each other for duplicates and would like a recommendation to do this most efficiently. The values are associated with the NumericUpDown control. I'm using VS and VB 2010.
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Jul 8, 2009
I have a gridview(editable).
It may have more than 1 row with columns startdate and enddate.
StartDate EndDate
4/4/09 6/6/09 (valid-existing row)
1/2/09 3/3/09 (valid-existing row)
7/7/09 9/9/09 (valid- edited row)
3/3/09 6/6/09 (Invalid - edited row )
When you see the above table/gridview, you will know what I want to validate.
I should be checking whether there is any row having start-end dates lying within the existing date range, if so I should invalidate them.
I shd have only distinct date range in my rows.
How do I do that.
May be Useful note: I will be able to check which column name I tried editing in that row.
Do any of you have some ideas how to create a logic to accomodate my validation issue in my webbased gridview control ?
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Jan 19, 2012
I am updating an application I've written used by my employer, a University, to allow students to register for their desired residence hall. I'm working on a new feature that will allow students to "partner" with another student - so that when one or the other registers for a room, the other student will be registered as well.
[Code]...
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Aug 5, 2009
I've tried different approaches to query a simple xml and compare one of it's values but none of them worked well.
Consider the following XML structure:
<?xml version="1.0" encoding="iso-8859-1" ?>
- <Shops>
- <Shop>
<text>Northampton</text>
<value>NN</value>
<currentdate>050809</currentdate>
<labelcounter>1</labelcounter>
[Code] .....
I have the shop name in a drop down list which is ShopsDDL and it's set to autopostback. What I want to achieve is:
On postback, check for a xml node where node's text = shopDDL shopname
And retrieve also this node's currentdate and label counter.
Rhen, if the node currentday = today then increment labelcounter by 1
Else set labelcounter = 1 and currentday= today
My problem is the XML query, I can do all the logic as soon as I manage to retrieve data from the XML.
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Jul 10, 2009
I am making a app that reads options of a ini
dim config as new iniconfigsource("patch.ini")
dim test as string = config.configs("news").getstring("test")
Then I made a dropdown with options
I want my script to compare the values of the dropdown with the string readed from the ini
then uses it as selected value (the so called standard value) the one uc without clicking on the arrow if the none of the values match with the string value of the ini then it executes
dropdown1.selectedindex = 0
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Sep 19, 2010
I accept both C# and VB.NET suggestion, even though I'm writing an app in VB.NET I have two lists of intergers
List1 {1,2,3,5}
List2 {2,4,6,7}
I want to have new List3 {4,6,7} which is composed of elements of List2 that are not in List1. I know I can write a nice For Each loop for this but I want it done in LINQ I've been looking for such methods at Enumerable Methods, but I can't find it.
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Jun 19, 2011
how to compare two list boxes and remove identical values or add them to a 3rd list box, but for some reason it's not working when I retrieve the data from a mySQL database using ADODB, here's my work cut down by a fair bit for it to be easy to understand.
For k As Integer = lstFriends.Items.Count - 1 To 0 Step -1
If lstDBFriends.Items.Contains(lstFriends.Items(k)) Then
lstFriends.Items.RemoveAt(k)
End If
Next
I've tried everything from changing the data type on the mySQL database to storing the retrieved data from the database to String declaration and it simply wont compare the two listboxes
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Aug 11, 2009
I have a query in Access 07 that identifies the following fields: ContractID, status, start date and end date. For each contract, I've been able to search a network share and upload its corresponding file; however I need to skip the import and write a record to a table for contracts with the same start and end date. I've included a placeholder (in bold below), but how do I make the date comparison work? Do I need to create a multi-dimensional array for that or can it be done with the code I have?
Private Sub cmdRefreshList_Click()
DoCmd.SetWarnings False
'Create an array based on the true-up contract IDs.
[code]....
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Jun 21, 2010
I have a program that reads in lottery results from the past 6 months (from the national lottery site) from a text file
31-Mar-2010,29,18,38,44,14,43,13,3,GUINEVERE
27-Mar-2010,32,38,11,15,42,6,24,2,GUINEVERE
24-Mar-2010,3,49,28,5,23,42,41,4,GUINEVERE
and stores it in an array (n-1,6) where n is the number of lottery lines, so the array looks like
0 1 2 3 4 5 6
0 29 18 38 44 14 43 13
1 32 38 11 15 42 6 24
then, in a 1D array I store the player's numbers, simply as
0 23
1 16
2 19
[code]....
I want it to take each number from the player's number array individually and compare them to each row individually in the lotto results array i.e. the first six cells in each row in the results array will be compared with each user number to find any matches, if a value matches then a count is incremented. if the count is greater than 2 but i'm getting no where with it :( i've been trying to use the For To loops but keep getting index out of range, or else nothing is happening at all!
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Jul 10, 2009
I have bound a listbox with a dataTable Now i want to move the values from the listbox to another listbox.i have changed the selectionMode of the listbox to multiple.So they choose multiple items and they get moved over to the other listbox.
for each item in listbox1.selecteditems listbox2.items.add(item) next
i get system.data.datarowview in the listbox2 how could i replace that with the actual value ?
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Dec 7, 2010
how to Compare text box text with listbox items text in vb.NE
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Jan 14, 2009
I am very new to vb.net. I have been using vb6 for a while and I am making the leap.I have a list box that receives entries from another text box, there will be multiple entries, and only some will be applicable per record(its a report writing app).e.g. The user says ok I need this and that signer for this record.
lstSigners.Items.Add(strSigner + strSigner)
The entries that are needed are then selected via checkbox in the listbox. I now need to be able to capture which items the user selected.
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May 9, 2009
I have a ListBox which is retriving mathematical data form a Texbox. I would like to know how to get the ListBox to automatically calculate all the mathematical data (finding the sum of all the data )
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Apr 1, 2010
The following is the code that i used to store all the values in the listbox ito the access database.but it is not working.I didn't get any error.but the values in the listbox is not being stored in the database.The field in sample table that stores the value from listbox is a multivalue field.[code]...
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Oct 10, 2009
..i am working in my project i am having problem in the list box part.. .
[Code]....
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Jun 9, 2011
I am using asp.net with vb.net. I have created 2 listboxes; lstselect and lstroles. List boxes lstselect contains all of the available roles that can be added into lstroles. How do I take the roles that have been added into lstroles and make them into a parameter to pulled into my database when the stored procedure runs?
Here is the code for how my list boxes share the roles:
Protected Sub btnRight_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRight.Click
If lstselect.SelectedIndex <> -1 Then
[Code]....
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Apr 28, 2011
So i have some HTML like this[code]...
My problem is, i want to also get div id="2" value at the same time and add it to my listbox, since the Persons ID is in div 1 and the Name of the person is in Div2.
I was thinking i could do another for each loop, and just add the username behind the id i pull.
Question is, how do i add to a value or position in a listbox, after its been filled?
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Mar 30, 2011
I'm trying to create a calculator that does this formula : Amount=Principal*(1+InterestRate) The point of it is to Calculate the compound interest earned over however many years the user selects between 1-15 from a listbox. The user also inputs the investment & interest rate. When calculate is clicked the results show in another listbox below.
year 1 $$$$$$
year 2 $$$$$$
etc
[Code]....
I stopped the code at Year 2 as it repeats the ElseIf to EndIf unitl selectedIndex = 15 & intYear 16.
it works for Year 1 but the problem comes with Year 2-15. it needs to take the value from the previous result in lstOutput and use it in the formula for principle.
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Mar 3, 2010
I have a list box which gets populated on the first run of the program by the user. On the next run it needs to be completely cleared so new values can be displayed.
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Sep 25, 2009
i have constant declared in form1.
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Oct 16, 2011
I need to put numeric values (only numeric, I should control that all numbers inserted are DOUBLE) and put in a listbox by the following criteria:
1-At the top
2-At the final
3-BY NUMERICAL ORDER (I tried to put it in Sorted=True but puts that 122 is lower than 22...)
How could I solve it? And how could I control that?
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Feb 25, 2009
I have a listbox, and its like this:
13
45
sdfg
34
13
And a button, which I want to search if the listbox has atleast 2 same value's [13 , 13], and delete it. So It will be:
13
45
sdfg
35
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Dec 21, 2010
I am facing a problem which I don't know how to sum up or use a function on all the values listed in ListBox.I am still new in Visual Basic so I need some help and I hope it is as simple as possible.This is a function of counting equivalent capacitance value of a combined circuit, the values are listed in listbox and I want to use a function.This is the code for my function part, I know it sounds silly but I have no any idea of coding it.[code]
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