Seeing If Value In Listbox Exists

Sep 4, 2011

i have 2 forms, when the listbox on form one wants to add to the listbox on form 2 i want to see if the item being added is already in listbox on form 2. I am not using searchlite as i don't understand it so this is what i have.LINE 4 IS THE LINE THAT IM TRYING TO IMPLEMENT.[code]i know that i can send selected listbox value to textbox and check that way but didn't want to code it that way.you wouldnot believe it, while writing the main post i re read it after i sent it and worked it out.[code]

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VS 2008 Remove Item From Listbox If Exists In Another Listbox?

Feb 1, 2010

I have 2 listboxes on my form.Listbox 1 - populated with "available" field namesListbox 2 - populated with "selected" field names.There cannot be the same field name in both listboxes - it's either one of the other.The logic I was going to apply was to populate Listbox 1 with every field name ... and then as I populated Listbox with the field names which the user has already selected, remove the corresponding item from Listbox 1.

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Listbox To See If A Value Already Exists?

May 8, 2011

I have a form that I want to check if the listbox contains a value then I want it to delete the image inside btnHouse, insert text into that button, and disable the use of the button. I have that done, but the problem I am having is that my if statement is only checking the first item inside the listbox, not all the items. Is there any way to have the statement check every item?[code]...

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Check If Item Exists In A Listbox?

Apr 30, 2009

This will check for an item in a listbox.[code]...

How do I check if an item exists in a listbox?

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ListBox PreferredHeight - Make ListBox Calculate Correct Integral Height Before ListBox Is Made Visible

Nov 19, 2009

If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:

a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).

b) PreferredHeight does not not appear to give the correct integral of item heights.

Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?

Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

ListBox1.Visible = False
ListBox1.IntegralHeight = True

[CODE]...

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Feb 17, 2011

This code bellow to compile a single listBox on form1 to listBox on form2 then listBox on form3.

I want to modified this code to compile 169 of ListBoxs on form1 to 169 listboxs on form2

and 169 listBoxs on form3.Try this code,not need the new coding.

Original code from JoOl and modified by John Anthony oliver

[Code]...

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Feb 13, 2010

1 when my listbox returns resaults it only brings back 10 how do I set it to return lets say 500

and question 2 is when I click on my links in listbox it's not opening webpage as I would expect it...

This is my code

[Code]...

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Apr 28, 2009

I am using VB.NET (version 2008). I have two types of items populating in a listbox (checked listbox). For example: lets say one is type "A" and other is "Type B". Their names maybe same so if the user sees those items in listbox then he won;t be able to determine their type until he click on them and checks out its properties. I wanted that I add each item to listbox and colour them so that blue for example means type "A" is there and red means the other. So this way I will be able to know at a glance that how many item of what type is present. I guess it may not be possible to do that in a standard checkedlistbox. I am also using component factory's krypton controls which enhance the gui of an application. But I dunno if I can progress using that.

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in my database there are 3 tables

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[Code]...

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Dim Manage = XmlFile...<track>
For Each XmlTag In Manage
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[Code]...

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This is the standard way of checking if URL exists [code]....

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I have a datagridview with two columns: name and str.

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sometimes the value of strvariable could be the same of a value that is already in the datagridview in the str column.

when this happens i dont want to add the row.

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Feb 10, 2011

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Public Function ValueExist(ByRef CheckValue As Object) As Boolean
Try
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[Code] .....

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This is the code I have
NewCustomerTable.Clear()
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[Code] .....
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Is it possible to use 2 exists function in 1 sql statement. Below are part of my

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I'm using the following code (System.Data.SQLite within VB.net)[code]...

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I have a windows service which fetches data from various datasources and build a XML file and send it to a webservice. For example first I will get customer details from Oracle Database and build the XML file and then the SQL Server database and build the customer details XML. I am planning to use the same function below to build the customer object irrespective of what the datasource is. But dr("age") column is not available in SQLserver datbase How can I check if a column exists or not.[code]

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I am trying to check if a folder exist, it doesn't work if the folder name has a space or "_" or "-". .

here is an example of cases that don't work:
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How would i just if a website exists, and, if so, launch a browser to open it. I am making a little tool for one of my freinds and it allow then to quickly launch websites. How would I check if that is a valid website to launch, so i don't get an error if it is not valid.[code]The error i want to stop is "Cannot start process because a file name has not been provided."So basically i want to make sure that the program can launch the URL so i don't get this error

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[Code]....

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