I have created VBA form in which I have list box and few buttons. I want to handle the enter key event when some one has selected some item from list box and pressed enter. If I can make some specific button click event default for enter key then also fine.
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I'm having some difficulty with a sorted & grouped listbox in WPF vb.net 3.5 that has an items source bound to an ObservableCollection.
What I want to be able to do is to retrieve a piece of data from the ObservableCollection items source depending on what item in the listbox the user has selected.I've almost got it working but because the listbox is sorted it does not match the index of the items source.
[code]...
As I previously mentioned, because the lstBox is sorted and also grouped the index's don't match up.Does anyone know how I can get the correct information I want from the List Source depending on the selected item in the list box?
What did I do wrong below? When I pass the enter key but for somehow the enter key event doesn't get triggered.
CODE:
i have a sub that checks all drives on a computer;
Dim getInfo As System.IO.DriveInfo()
getInfo = System.IO.DriveInfo.GetDrives
For Each info As System.IO.DriveInfo In getInfo
TextBox1.Text = TextBox1.Text & info.Name & vbCrLf
Next
this shows all drives in textbox1. now if i select the drive i want, i can then check the free & total space with this sub;
Dim cdrive As System.IO.DriveInfo
cdrive = My.Computer.FileSystem.GetDriveInfo(TextBox1.SelectedText)
TextBox2.Text = TextBox1.SelectedText & " has " & cdrive.TotalSize / 1024 / 1024 / 1024 & "gb total space" & vbCrLf
TextBox2.Text = TextBox2.Text & "and " & cdrive.TotalFreeSpace / 1024 / 1024 / 1024 & "gb free space"
all this is good if i select the drive i want to check. but if i only click the drive, since no text is selected, the second sub does not work.is there a way to check at which index the cursor is, grab the item of the index, and pass it to the sub so i don't have to select the text itself?
can't seem to find the answer to this anywhere.I need to know how to add an item in a list box above the currently selected item. I know there is a RemoveAt function which removes selected but is there any way to control where an item is added?
View 7 RepliesI have a list box that contains some values. I want to checked just whether any of the item from tha list has been selected or not? If selected output should be true otherwise false.
View 3 RepliesI'm trying to figure out a code to do the following:If the item is found in the list box, make the item in the list box selected.
View 8 RepliesI'm having a problem with a program I am re-making. I used to be quite good at this stuff but I stopped and now I've pretty much forgotten everything. In hopes of gaining my knowledge back, I wanted to remake a program I made years ago but I'm having a problem.
I'm trying to split a selected item in a list box. This is what the item looks like:
|DATA|DATA|DATA|DATA/ELSE|
I can split it fine using this code:
Private Sub ListBox1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox1.Click
Dim LineofText As String
[Code].....
in VB10 Express is there a way to verify that something in a list box has been selected BEFORE an action can be taken? I was debugging and found an unhandled error when I accidentally told the program to do something, but there was nothing selected.
View 2 RepliesHi is there a way I could keep the highlight of all selected item in list view. every time listview lost focus it's gone?
View 1 RepliesI'm currently creating a tabbed browser. Everything works fine as i expected. When it comes to history, I'm excepting a difficulty to navigating items from list view.
View 4 RepliesI am trying to select an item in the listbox (e.g. January) and retrieve the number of days to display in the label. Have listbox (listMonth) created but cannot seem to add the data ("31") to show in the label box(lblDays.text) when January is selected.
Public Class MonthDay
'Declare global variables
Dim Jan As String = "31"
Dim Feb As String = "28 or 29"
[code].....
I have a comboBox that is populated with a dataset. The values are:
KG - Kilograms
LB - Pounds
and so on.
So when the user clicks the comboBox in the DropDown the user will see:
KG - Kilograms
LB - Pounds
and so on.
[Code]...
I have items in a listbox. the user have to select one item(its mandatory) and after have to click next button to proceed to the next form. in the second form the selected item should be displayed in a label.
View 6 RepliesMy listbox is bound to a datatable. The listbox is initially set to not show any data using selectedindex = -1.I have a second listbox that populates based upon the entry selected in listbox1. I use the Bindingsource PositionChanged event to populate the 2nd listbox.My problem is when the 1st entry in the listbox is selected the PositionChanged event does not fire, because the row selected is the default current position of the bindingsource. Can the Bindingsource be set to a "Null" position, I tried Position = -1 and that has no effect.
View 3 RepliesI've worked out how to create a DropDownList using the following code: <select id="salesPersonDropList" runat="server"></select> In my .aspx page, then my code behind loops through database output running:
Dim newListItem As ListItem
newListItem = New ListItem("Title", "Value")
salesPersonDropList.Items.Add(newListItem )
What I can't figure out is how to programatically set which of the List Items created is the one to be pre-selected in the rendered DropDownList, ie, how to create what I'd write in HTML as:
[Code]...
i have a listbox (listbox1) which is populated via the user selecting a folder and the listbox1 displays all the subfolders of that folder, and a second list box (listbox2) which display all the files within the folder selected in the 1st list box.
And i have a checksum scanner on the same form, which when the 'scan' button is clicked i want to scan the listbox2 selected item, but i cant seem to get it working, heres my
Private Sub scan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCrc.Click
Dim c As New CRC32()
[Code]....
[code] I am trying to append the name of each checked list box item selected to the end of the current directory but i am obviously doing something wrong.
View 3 RepliesVB.NET Winforms Application... When a user starts typing in the search box of the application it automatically populates the name list dropdown box with the valid results and sets the droppeddown value to true... Everything is working fine except the fact that the user is forced to select a value from the name list or press the esc key because without doing so the mouse cursor just disappears and you have to move the mouse all the way outside the application for it to come back and it will only do so while outside the applicaiton.. Below is the code that I am using for this and it should be noted that I am using the droppeddown value else where in the application and none of those instances have an issue its only this one..
Private Sub u_lastName_Box_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles u_lastName_Box.TextChanged
u_nameLook_Box.Items.Clear()
[Code]....
I am creating a program that allows a user to view a list of foods in a combo box, add that food unto a list box, and adds all of the calories of that food together. When the user highlights their select food, the program automatically shows the amount of calories for that particular food in a text box. The program is getting the food and calorie information from an access database. I managed to get all of the food calories to add up properly, however, I ran into a problem. Sometimes, well, most of the time, when I select certain foods from the combo box, the program automatically reselects another random food, usually a food that begins with either an A, B, or C. Also, the other random food that the program chooses usually has the same amount of calories as the food I originally wanted to choose. I have over 6,000 items in the database. I don't understand why this is happening. This is what my code looks like for the button that adds each food to the list box:
Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click
Foods_Selected.Items.Add(ComboBox1.Text)
Static i As Single
[CODE]...
And this is what my code looks like for the button that adds all of the foods together:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim x As Single
Dim TotalCalories As Single
[CODE]...
I have no idea what to try. It's like the program just skips over random foods, even though all of the information for them is in the database.
i i have a listbox and 1 button in my application thing i want is when i click on some listbox item auto press that button or when i click on some item in list box it remove selected items from list box just with mouse click
View 3 RepliesI have a class called solution. This class has a property named cost. I also have a class called solutionList that inherits List(Of Solution). I have an instance of the solutionList class in another class called solutionGroup. Within the solutionGroup class I have a property called totalCost that sums the solution.cost property for all solutions in the solutionList.
But, I need a way to know when the cost has changed so that I can recalculate the solutionGroup.totalCost. I've added events to the methods that add or remove solutions from the list but I need a way to know if someone does something like
SolutionList.Item(0).cost = 100.
How to raise an event when the cost property of a solution that is in the solutionList is changed but with no luck.
Here is my solutionList class:
Public Class solutionList
Inherits List(Of Solution)
Friend Event listChanged(ByVal sender As Object, ByVal e As EventArgs)
Public Sub New()
End Sub
[Code] .....
Currently, when I double click on my current list, even if there isnt an item at the current mouses location, it calls the event and uses the last highlighted item. I know it is possible to fix this by using a selected index change event, but I require the list items to be double clicked
View 5 RepliesIn my application I have a listbox and SelectionMode should be MultiSimple because users need to see which items they selected. In another tab we have another listbox this one should show all the selection users had done in first tab. Private Sub
[Code]....
I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.
View 2 RepliesI'm building a Dialog in Winforms. It's got the two OK and Cancel buttons that are there when you create it, which is what I want. In this dialog I also have a TextBox and a Sub (coding in VB.NET) that handles its KeyPress event. I need stuff to happen when the 'Enter' key is pressed. Now, I've done such KeyPress handling times and times again. This situation, however, is different, because as soon as 'Enter' key is pressed, the dialog automatically assumes you're pressing the 'OK' button, returns a result and closes.
In both the Designer and the actual form when running the application, the OK button is highlight, which means is has some kind of a focus (for the lack of a better term) at all times. How can I disable this feature of a dialog? When I debug my code, pressing enter does not even get to the sub handling the KeyPress event. It simply closes the dialog and returns the result, therefore I can't really step through the code and see what happens behind the scenes. To restate the question, how can I disable this functionality?
I have alot of experience in working in VBA for excel, but not so much experience in creating my own structures so it's all still a bit foggy. I'm trying to capture the event for when the F1 key is pressed, not just when the form is active, but anytime the program is running. The code below expressing the handling is automatically generated for me in VB Express... But I'd like to change the situation to encompass anytime the program is open. I guess I have to reference events that happen in windows in general, but i don't know how to do it. I think i have to create the even in a class module?
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i declared a global variable button:
Dim button1 As New Button()
Now, i dont know how to add a click event in this button since it is a variable.
I have a list box on the form which functions as a copy/paste. When you copy something, it is automatically added to the list box as a "clipboard helper". Here is the problem,however: if the text is more than 1 line, the list box does not show all the text.It ends up looking messy.So getting back to my question, is it possible to make the list box item height for an item depending on the amount of lines that item contains?This is a one line sentence in the list box and should take up one line.This is a multi line sentence in the list box and should take up two lines for item height.
View 11 RepliesJust 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].....
