My problem is ComboBox, with the text of the first item longer than the combo - I don't see the text from the start, I see the end of the text. I wanna see text from the start. I've tried 'SelectionStart' property set to 0, but it has nothing to do with my problem - it only sets where from text is selected.
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I have custom asynchronous WebRequest class that I am testing to find out how fast the request will be cancelled and found some odd results, that starting 6 WebRequests with TPL and cancelling them right away takes 25 sec, but when I used just regular background threads it took only 5 sec.
Update: Running them without cancelling takes with Task.Start 9 sec and Thread.Start 3 sec accordingly.
Imports System.Net
Imports System.Threading
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My FormLoad event contains a simple line which is Me.Hide. Then I make the tray icon visible so the application can be shown if the user needs it. However, the Me.Hide statement doesn't work during the form load procedure. It seems to work fine after the form has been loaded. So, my question is, how can I simply stop the form from becoming visible in the first place or hide it after it has loaded?
View 4 RepliesOkay, so I'm doing a card game and I'm trying to set that when picturebox (PictureBox1) is clicked, a random card from 13 cards will come visible. Problem is, that when i start the program and click the picturebox, the same card will always come visible. As you can see i've put a button (Button1) which will hide every card. If I press Button2, then Button1 and then the PictureBox1 it will show differend card, but the cards which come visible are always the same.
e.g i press PictureBox1 (which will make card visible), then Button1 (which will make PictureBox1 non-enabled) and then Button2 (which will hide every card and make PictureBox1 pressable). Lets say i pressed the PictureBox1 four times and i got cards: 9, 6, 7, 3, then I close the program, start it again and press PictureBox1 again 4 times and it will show the same cards (9, 6, 7, 3). How can this be done that it will not show the same cards always?
Here's my code...
Public Class Form1
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
End
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I have a table in MsAccess with the fields CustId,ItemId,Description,Price,Amount.On a form in vb express..there is a combobox for ItemId which is already populated with the ItemIds of all the Description of Items. the program is running fine and it is saving data into table through a saveButton Click event.Since ItemId is not necessary to be visible to the User so i set the Visible property of Combobox as False. Now what happened that it gave error while saving data because the programme took as ItemId field is missing for the information to save in table.When i set the Visible property of Combobox as True the programme works fine.How i can hide Combobox ItemId without interrupting the programme to save data.
View 4 RepliesOn a form in vb express.........there is a combobox for ItemId which is already populated with the ItemIds of all the Description of Items. the program is running fine and it is saving data into table through a saveButton Click event.Since ItemId is not necessary to be visible to the User so i set the Visible property of Combobox as False. Now what happened that it gave error while saving data because the programme took as ItemId field is missing for the information to save in table.When i set the Visible property of Combobox as True the programme works fine.
View 12 RepliesI am disabling combobox in VB.net. But in disable mode it not visible properly. I tried changing both BackColor and ForeColor but it is not working.
Code :
cmbbox.BackColor = Color.FromName("Window")
or
cmbbox.ForeColor = Color.FromName("Window")
I am making my component enable false.But I want to make it viewable.You can reffer the link.This is what exacly I want but in VB.Net : A combobox that looks decent when it is disabled
How to use a databound combo box to display one field in the drop down, and another as the combo box text on roll up? Using VS 2005... For example, I have a datatable that has 2 fields. One called "ShortDesc" and one called "LongDesc". I want to be able to see the "LongDesc" column values in the drop down on the combo box. When I make a selection, I want the text in the combo box to read the corresponding "ShortDesc" value.
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Well I'm using VB 2010 and I need my 'Sub Main' coding to start before my forms do. But I can't find the Start Up Object combo list anywhere! I can find a Start Up Form combo list, but (as the name suggests) it only lists my various forms. I need my 'Sub Main' coding to start first!
View 5 Repliesi wan to display the text from combobox into the textbox and clear the combobox text when click on the button.But when i select another text from the combobox and click the button, the textbox display and overwrite the previous text.How can i do so that when click, textbox display text from combobox and clear combobox text. Then click again, display the new text at 2nd line of the textbox without deleting the previous text?
View 5 RepliesI just had a question because I cannot seem to find the answers anywhere on the internet... also we are not upto this part in class yet.. Say I have 2 combo boxs... cmb1 and cmb2.. both are datasets from an access table.. how do I make it so cmb2 refreshes based on the value of cmb1? eg; if cmb1 is say, period 1, then i want cmb2 to only show results bases on items I have in period 1?
View 2 RepliesI have 2 comboboxes. When I choose a country in cboLand I want only the states to show in cboStaat that are associated with the country from cboLand. I tried the code below but I get all different error messages. Perhaps you can see something in my code that I missed.
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I got a combobox which is filled with values from datasource. By default the first value is chosen which is fine but I need to display "Choose country" as the default combobox text. The user then can choose from the drop down list.
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I have a hidden button on a form.When text is entered into a TextBox, i want the button to become visible.
View 3 RepliesI am just learning Visual Basic Express, having last used VB about 15 years ago.
I start a new Windows forms Application project and drag a combobox onto it.
In the properties panel, I set DropDownStyle to "DropDownList" (i don't want it to be editable) and the Items to be[code]....
I've found some unexpected behaviour in my ComboBox, which I'm hoping someone can help me with. If focus is lost by pressing the Return key on a form which has AcceptButton set, then after handling the Validating event and cancelling the validation,the ComboBox will not drop down any more. When you click on the drop-down arrow, the list drops down momentarilly then goes away again To reproduce this, create a new VB.NET Windows Forms application. Drop a Combo Box and a Button onto the default form, then add the following code:[code]....
Run this application, click on the Combo Box, enter some random text (e.g. "asdf"), then press Return. After this, click on the drop-down arrow on the Combo Box.I'm using Visual Basic 2010 Express on Windows 7 Home Premium.
I am using a label to display a song for an mp3 player. I wanted to scroll the text inside the label for anything that is longer than the label width. I figured out the width of the label and if the width of the text inside the label is longer. But I have no idea how to turn this into subtracting parts/pixels of the text currently displayed and how to append the subtracted parts to the end of the new text.
Sub f1timer2tick()
Dim g As Graphics = f1l2.CreateGraphics
Dim s As SizeF
If f1l2.Text.Length > 19 Then
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Vigenere Cipher which I am trying to code in VB.Net. The main thing is to decrypt to plain text with keys provided. Currently, I did a small code to decrypt NIOZS to COMPU with the key LUCKY. This is done by storing the cipher text, the key text and the English alphabets in 3 different arrays each starting at index 0.
However, I do not know how to proceed on if my cipher text is longer. My cipher text file consists of texts in .txt, every 5 words are group together (e.g. NIOZS ECPQE TOGCG YMKQF E). The keys are all different in lengths. I also understand about checking letter frequency to deduce the key but I do not know from which point to start on.
Can anyone give me some pointers as to how I can get to start for my program? I tried looking for samples but some applets on the web wasn't exactly accurate or I can't start it up after I dl-ed.
I added a Combobox. Unbound mode, added the lines (text) I needed. What I want to do is on certain lines, click the text and it fires off a process.start.
Private Sub ComboBox2_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox2.SelectedIndexChanged
Process.Start("mailto:test@test.com")
How to identify each line to assign a different process start command.
I have a Text Box not visible and disabled upon form load. by the time I wanna close the form the text box is enabled.
This is happening without any code enabling it.
I have changed all IF statements that check if it's enabled to
IF <textbox>.Enabled.ToString = true THEN[code]...
I want to Know about ComboBox
i am created a form with three comboboxes. means
FirstNameComboBox
MiddleNameComboBox
LastNameComboBox
all ComboBoxes are fill ( names ) from a "CustomerName" table
"CustomerName" table is have more than ten thousand records
i am use three binding sources Like CustomerName.BindingSource, CustomerName.BindingSource1 and CustomerName.BindingSource2
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I've got a panel - that's in a group box. All of this - with lots of other textboxes on labels - is in another panel (the big panel).I make the big panel visible and not visible based on selections made by the user.This small panel - that's in the group box. I cannot seem to make it appear.Even if I leave it VISIBLE at design time - the objects in it will not appear.Is there some kind of nesting problem that I'm not aware of!
View 9 RepliesI have five menu items that i have created as a user control and placed on the master page. Now i want one of the menu items to be visible only for particular user role and not visible for others. Here is what I did. Its not working though.
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I just pasted a datagridview on the form , added a button and named its text as "ADD". I even changed the UseColumnTextForButton
property to true . But when the form loads the button text is not displaying .
I'm having an odd problem when making a form visible and not visible and it not continuing to function. Here is what I have happening. I have a main form (frmMain) that is an MDIParent. On this form I have a menu to open a second form (frmCalculate) and populate a listview from Items in the database.
As I click or select items in the listview on frmCalculate the tag is read and data is pulled based on the id stored in that tag and fills in various fields on the form. This works great. However, I also have a context menu attached to the listview that allows me to perform a "what if" scenerio on the items I am calculating. When I select this menu, I hide the frmCalculate and open the frmWhatIf form where I can mess around with values on the item I had hilighted in the listview on frmCalculate. Nothing is pulled from or written back to the database here, all the information is filled in from fields on frmCalculate. It just allows me to look at rising costs and how they will affect my margins.... anyway.
If I then close frmWhatIf, it brings my frmCalculate back by setting its visible propery to true (never closed frmCalculate, just hid it). At this point if I click an item in the listview I get an exception for a null reference. IF however I never hide frmCalculate, I can open and close frmWhatIF without ever having an issue. Why do I lose the functionality to select items just by hiding and unhiding the form? As a test I added two menus to the toolbar on frmMain one called hide and one called show. I then opened frmCalculate with original menu item to populate the listview and selected a few items to test that it was working and then using the hide menu I made the form invisible and the show button to bring it back. This yielded the same exception so without even opening frmWhatIf the problem still occurs.
have a combo box that is bound to a table in my database.When I start the form up the value in the combo defaults to the first row in the table which is "Yes" how can I have it display Select... until a value has actually been selected.
View 1 RepliesIs there any way to detect if the text in a label is longer than the label itself (assuming autosize is set to false)? I want to trim the text in a label so the last line is a finished sentence (everything after that sentence is removed). I hope you understand what I mean.
I want to go from this:"Hello. This is a test string. Most test stri..."
to"Hello. This is a test string."
Is there any easy way to do this?
I know if I use
webBrowser1.DocumentText
it retrieves all of the text on the document. But I want to retireve all of the visible text from a webpage. Like for Google would be: Screen reader users, click here to turn off Google Instant.
Web
Images
Videos
Maps
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I have a tab control application, each tab loads a particular user control and each of those user controls will then add other user controls that are used amongst other the user controls. For example, I have an "ucQuotes" page and an "ucInventory" page, when the specific tab is selected, the "uc****" user control is loaded on that page, and in the case of "ucQuotes" and "ucInventory" they both use a control called "ucPartNumber"; a user control consisting of a combobox, textbox, and button. I have no issues reusing the shared user controls, in this case. My problem arises with my "ucQuickPrice" control, as it is always present at the bottom of the tab control form (separate from the tabcontrol, but on the same form), and it too uses ucPartnumber.
Here's my issue, as I type into the ucPartnumber combobox, the text I type does not appear in the combobox, it appears in the textbox of the ucPartnumber control that is being used on the tabcontrol page. There are no shared instances of ucPartNumber, nor do I have this issue between typing on one tab page and the text showing on the user control of another tab page.I tried just creating the ucPartNumber controls on the ucQuickPrice control, not adding a new instance of ucPartnumber on the .Load event, and the issue persists.
The combobox(s) in question are bound programmatically with about 40,000 items, ".datasource = dataset.tablename" not to a bindingsource. Autocomplete is set to none, I added code to utilize tool tips and the basic combobox filtering functionality. Is this a bug, or is there something I'm neglecting? I'm about 95% complete with this application, and this just happened today. I made the decision, to just reuse the ucPartNumber control on the ucQuickPrice control (originallly it's size and orientation would not fit, but I added some coding to detect what parent is adding ucPartNumber and to change its appearance accordingly). Before, I made this change, I did not have this problem. And, in trying to go back to how I had things set up before the change, the problem will not go away. if the whole control within a control verbage I used is a bit confusing, let me know and I'll try to better explain what is happening. At this point, I'm going to close and reopen vbexpress, as when I started this ordeal, vb started acting weird and wanted me to save all my work, it usually does this before locking up.
I have made my application to start automaticly when windows start (registry ../currentversion/run/appname + path). In this mode the application start minimized and an little icon appear in the notification icon area. With this icon you can maximize the app or exit it.If you exit the app and start it again using the Menu (Start/programs etc) than the application start in minimized mode (and in this case I would like to have it in normal mode) because the setting autostart is still true.Is there a way you can detect when the application start when windows startup using the above registry or when people click on an icon in the programs menu (or desktop)?
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