how do i determine if the current listview line is selected or not?
Private Sub lst_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles lst.DrawItem
If lst.Items(e.Index).selected = True Then
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Using VB.net 2010 i am trying to figure out if an item was selected or not. Reason being is that if the user clicks on an item and pushes a button then everything works just fine. However, if the user selects an item and then clicks on a blank spot on the bottom of the listview and then clicks the button then it crashes.
My code is this:
If (lstMaster.SelectedItems(0).SubItems(1).Text) Is Nothing Then
MsgBox("test")
End If
im trying to determine if there is an item selected on the listview..
i have a listview that displays customers name with a .tag that holds there ID.
how do you tell if the tag is 0 or empty before executing code?
[code..]
the code i want to execute if there is a tag (or atleast a listitem is selected) is down here.
I'm a student and I have a small project to create for my VB class. For the personal touch, I tried using a ListView to manage a SQL database (on a remote web server).What I need to do right now is determine how many items are selected (if more than one, enable delete and edit buttons, if more than one, disable edit button). I searched a lot for that, but didn't find anything working with me.Do you know a simple way I could get the number of items that are selected in my ListView?
View 2 RepliesI'm trying to get the selected line num (or anything which helps me to identify the line) in a multi line texbox.The meaning for current or selected line is for the line that the user's characteristic (I found that word on the dictionary) is placed on.
View 10 RepliesI have a multicolum listview. When I click once, just to select a item, the whole line doesn't get that blue coloer behind it. Just the text in the first colum. How can I make the whole line be selected?
View 3 Replieshow to read text from a listbox line by line and put current line in a label?
View 3 Repliesi am developing a point of sales system. currently i have my product code scanned and displayed in a listview. lets say that i have 5 product codes displayed in my first listview. By clicking on a button, how can i use these codes to call upon the details (prices, product name, etc.) of the corresponding codes and display in another listview?
i am using Visual Basic 2008 and MsAccess as my database. who have the idea on solving my question. (As my last thread has not been answered at all..
How do I know wich is the current folder of an App?? I mean... Is there a way to know where is the exe located from the running code?
View 5 RepliesIs there a 'simple' way to determine the current user's email address ? I want to automatically send an email when an application detects an unhandled exception, but would like it to come from the current user.I found this on the net and haven't yet worked out what its doing (although it seems to work). Unfortunately, as I'm not sure how it works, I also don't know what drawbacks there are to this technique.[code]...
View 5 Repliesi am developing a point of sales system. currently i have my product code scanned and displayed in a listview. lets say that i have 5 product codes displayed in my first listview.
By clicking on a button, how can i use these codes to call upon the details (prices, product name, etc.) of the corresponding codes and display in another listview?
i am using Visual Basic 2008 and MsAccess as my database.
Ok, basically, I need to know what the current hard drive letter that the current user is using, along with the user's name, followed by Music. When using the command prompt, we can use a simple code that is just %currentuser%Music but, I guess Visual Basic is a bit more complicated. Haha.
If you're curious why I need this, it is because I am making a program for my company to help backup our music and documents from their computers before we get new computers.
When using the code above in the command prompt in Windows, you would get something like: C:UsersRobertMusic, but this does not work for Visual Basic 2008.
My current operating system is Windows 7. I can supply more information if needed.
I want to populate a listview and leave selected records that are true
I have a DB record which is ID int, desc varchar, selected boolean.
I have tried the code below
LVProducts is a Listview and DS is a dataset
CODE:
I have two listview in a separate form, basically what i want to do is whenever I select a row in my first listview the items in that selected row will be copied in my second listview which is empty.
View 5 RepliesDo I really have to go through all this just to find out what item has been selected in a ListView?
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Isn't there something fundamental like this? Is absolutely everything in VB.NET buried beneath a colossal heap of bureaucracy?
I am having difficulty using the selected value of the combobox while calling it from the ok button click event procedure. While debugging in the Ok button coding none of the values are their, but for the comboxbox coding it appears that it is working properly.I made a seperate funciton to handle the combobox, could this be my error?
ComboBox
Public Function choosepipecomboboxcoding(ByVal cboChoosePipe As Object,
ByVal HDPE As Double,
ByVal PVC As Double,
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I want to add a context menu to a datagrid in VB2008 and I need to find out which menu item the user selected.
I don't want to use the ContextMenuStrip that's available in the toolbox since it doesn't allow for dynamic placement depending on what row is active in the grid (I haven't found a Top and Left property in the ContextMenuStrip)
Here's what I've got so far, I'm aware of the fact that the MsgBox uses a non-existing property, it is meant to show my intention.
Given the available properties in the ContextMenu object, I would think that there would be something like a SelectedItemCaption property but a search of the object tree yields no results.
dim grdContextMenu as ContextMenu
grdContextMenu = New ContextMenu
grdContextMenu.MenuItems.Add("Insert")
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I am having trouble using the values that were selected from the dropdown list. How would you reccommend passing the selected values from the view?Ideally, we want to use the selected dropdown values to determine a query.
View 1 RepliesIs there any way to determine if a line of a richtextbox has been wrapped up to the next? Something line
if line.length > richbox.width then 'do something
i have designed a form that generates e-mails for outlook. the form has a textbox which allows the user to write extra notes. these notes are then added to the e-mail body at the end.
here is the issue, suppose the user wants to enter the following as extra notes.but when i actually add this to the end of the e-mail body i get something like this
"Please send us a replyyours truly,user" i has similar issues when i was generating the e-mail body as i was not using the default SMTP client server but some other methods to generate the e-mail
i know how to make the characters come to the next line, but i do not know how can i determine when the user has moved to the next line is there a way to determine this, and if there is how can i replace it with this character " %0d%0A"
i am building an application which sum column of datagridview based on the row you are in .
when i try to get the current row using RowEnter event ... i found out that this event occurs when a row receives input focus but before it becomes the current row....
when i try to get the current row using SelectionChanged event it returns current row but it also slows down my app because this event activates when you move from one cell to another ...
so what i need is an event or some code that gets me the current row after the selection has changed but to work only when user changes a row
I'm writing a text editor for my own use ( I'm "home learning") where I want to be able to leave comments for myself, like in code section of the VB express IDE. I have figured out how to get the Integer Location of the apostrophy, but can't get it to color the rest of the line. I don't know how to tell the program to find the integer value of the last character in the line. I need that to be able to subtract the apostrophy's location from the last character's location, to get the "SelectedLength". Then I can add that to the apstrophy's location to give the SelectedLength the SelectionColor.This code was thrown together from excerpts of several codes I found on the web. I had to rewrite everything to get it to do what it does so far...
Apostrophy Location is char # 534 , the end of the line is 547. ( I cheated to get that count by placing another apostrophy there, and reclicking the btn. )Anyway, I want to take 547 - 534 to get (13) the SelectionLength, then give the SelectionColor ( green) to that selected text.
[CODE]
Dim Location As Integer
Dim char3() As String = {"'"}
Dim z As Integer = CStr(vbCrLf.Count)
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how can i get the number of spaces in the beginning of each line before a word..following code is just for example reasons, not to be misunderstood for code that needs to be fixed.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Clipboard.GetDataObject.GetDataPresent(DataFormats.Text) Then
RichTextBox1.Paste()
RichTextBox2.Paste()
End If
End Sub
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For some reason, before the selectedindexchanged sub routine finishes, combobox Description is still pointing on the last selectedindex changed and the combobox Image is on the actual current selected index changed. Once it exits the routine both combobox are in the current value.
I cant see why this is happening, causing a lot of trouble.
Private Sub Connection()
con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:TestDatabase1.accdb"
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I'm creating a type of drawing program. The user can draw a line, much like in word or paint, etc. But once the line is drawn (to a picturebox or bitmap in memory), I want the user to be able to click on the line and drag it around (translate it).
If I know the coordinates of the endpoints of the line, as well as the pen width it was drawn with, how can I tell if a certain coordinate (mouse location) is contained by the line?
My first thought was to take a mathematical approach, like get an equation for a line, and check to see if the coordinate belonged to it. But for a higher pen width, the line is thicker, and thus contains more points.
How can I tell what coordinates are part of the line? Is there some sort of intersect function in the gdi that takes a line?
I am using a webbrowser control, which is used for both internet and folder exploring. How can I determine when viewing files on the local directory, which file is selected?
I ran across something in my searches saying there was a property under the webbrowser.document called SelectedItem. But this must not be in 2008.
With the Listview in Details view:When showing a long (scrolling) list:Is there an (easy) way to return the index's of which range of items are currently visible in the control?
View 2 Replieswhat i am trying to do is that i have a textbox like this which is a muticolume
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I have created a vb.net program and released it to the customer. They are running the exe and at times the program crashes unexpectedly and display the message: "... has encountered a problem and needs to close" I know I should have added code to handle the exception, but is there a way that I can find out which line in the program caused the error? What is generally as good way to track errors in a program after it has been released?
View 1 RepliesI am having 3 radio buttons and a button The codes should be added to the button_click event, when ever the radio button is selected and the button is click then, The codes should determine which button is selected and assign it to a variable. Create a two parallel 1-dim arrays and populate it with the data below:
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