I have the following code and I can't get the lost focus to work.
Private Sub txtSpeed_KeyDown(ByVal eventSender As System.Object, ByVal eventArgs As System.Windows.Forms.KeyEventArgs) Handles txtSpeed.KeyDown, txtSpeed.LostFocus
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Error1'KeyChar' is not a member of 'System.Windows.Forms.KeyEventArgs'.
Private Sub gradeTextBox_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles gradeTextBox.KeyDown
Select Case e.KeyChar
Case "0" To "9", vbBack, vbCr 'only allows 0-9 in the textbox
e.Handled = False
Case "." 'also allows a decimal point
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I have a test app driven by bluetooth serial events In my form load code I hide the cursor so it doesn't get in the way of pictures (fullscreen) When one event is called by bluetooth, it brings up a msgbox and the user has to click OK. I tried Windows.Forms.Cursor.Show() but it doesn't work.
I'm guessing it's something to do with delegates and events and the form, but the debugger doesn't complain at any point. It just refuses to show the cursor. How can I get my serialport event to show the cursor? And then hide it after?
When trying to compile my newly created ClassLibrary class 'Validator' that validates entries made into TextBoxs or MaskedTextBoxs, I get the following error:
Warning 1 Namespace or type specified in the Imports 'System.Windows.Forms' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. C:Users erryDocumentsVisual Studio 2008ProjectsMillerClassLibMillerClassLibValidator.vb 1 9 MillerClassLib.
Following is the first part of code in the class:
Imports
System.Windows.Forms
Public
Class Validator
[code]....
What can I do to resolve this problem? The classes in this class library will be used to validate forms data input in a number of varied projects.
I am trying to change the background color of a tooltip
I am using tooltip.backgroundcolor = color.colr
No errors but thecolor doesn't change
I have the code which checks if there is a selected tab
Private Function GetBrowser() As WebBrowser
If TabControl1.SelectedTab IsNot Nothing Then
For Each c As Control In TabControl1.SelectedTab.Controls
If TypeOf (c) Is WebBrowser Then
Return c
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With the following imported namespaces in my project :
Imports System.Windows.Forms
Imports System.Reflection
.. I cannot add..
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I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
View 4 RepliesI have a class library in which i have created a simple new application with a form and added AX webbrowser control on it. In order to apply events on popup of webapplication shown in webbrowser (or to detect whether a pop-up has opend), i am using LostFocus event on webbrowser control, it was working fine till now.But after i reset my IE settings (Internet options->Advance->Reset) the event stopped working. I am using IE9 and the class library is developed in VB.NET (VS 2010).
View 9 Repliesi've made a tabbed webbrowser (but i'm new and a noob with VB.NET)The tabs system is working, but the progressbar doesn't work and my titles aren't changing.
Imports System.Web
Imports System.IO
Imports System.Text
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An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll it also says make sure you do not have infinate loop or infinate recursion il give all code in order that they are executed in Check the chechbox and it disables all irelevent stuff and populates the combobox
Private Sub CheckBox_Spray_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox_Spray.CheckedChanged
If Me.CheckBox_Spray.Checked = True Then
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I have an issue with my .NET application and it can only be reproduced sometimes and only on client's location, which makes it extremely difficult to resolve. In the application the forms authentication is used. There is a login page to which every anonymous user is redirected. After user enters username and password, it redirects to DefaultURL or some predefined page. The problem is that sometimes when user enters correct username and password, it doesn't login, instead it just refreshes the login page without any error messages. After several tries of inputing username and password, user is able to login to the system.
See my login page Submit_Click code below:
Dim userName As String = tbUsername.Text
Dim password As String = tbPassword.Text
Dim returnUrl As String = Request("returnUrl")
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I've developed a small windows form application in Visual Studio 2005. I have tested the application on a completely fresh install of Vista 32-bit as well as Vista 64-bit and it works fine... But when I copy the application onto an XP machine the following problems occur:The application no longer has its icon, just the default .exe console box icon
Whenever I try to open the application, absolutely nothing happens
I have a listviewsorter that does work on Windows 2000, Windows Vista and Windows 7 (and maybe others), but it doesn't on Windows XP.
View 5 RepliesI've created a windows service which must produce a beep every 0.5 seconds.
I've installed and started that. but nothing happends.
what should I do?this is my service:[URL]...
This Module doesn't work on Windows 7 x64.What I should change?The module is : Runpe.
vb.net
Imports System.Runtime.InteropServices
Imports System.ComponentModel
Public Class rp
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I'm writing a Windows Service:
Code:
Public Class Service1
Protected Overrides Sub OnStart(ByVal args() As String)
System.Diagnostics.Debugger.Break()
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I've installed the service, I can run it with no errors but... I can't debug!
I thought that with the line System.Diagnostics.Debugger.Break()
the service should stop and wait for my input. But NO!
I also tried to click on Tools > Attach process to debug but I can't see anything, just a gray background!
In the registry event it's written that the process started successfully, but the process doesn't show me the message box "Up and running"
I have built a recursive file system crawler that amasses file system data from a file share. I use the FileInfo object to get my metrics, however, I am finding that in especially deep file structs, that the ol' 260 character MAX_PATH MS bug crops up ':8-0:'. This puts me in my angry place, since I do not seem to be able to get around it no matter what kind of programmatic tom-foolery I try.
So far, I have tried:- converting to 8.3 format --> no good path + filename STILL is > 260 (believe it or not) - tried to go with a Straight low-level API approach
What I have found is some pretty Sketchy information regarding VB implementation of the kernel32 api's in this regard (just try & find a createfile port for vb.net, I couldnt)
Anyway, I guess I was hoping that someone else has run into this pain, and knows how to make a surefire way to get a file's information (size, dates esp), regardless of how long and painful the path may in fact be...
I have a form created in VB.net. It is used to get some information form a user. The form is not bound to any data source.
A combobox on this form is used to enter a cost. I want the value entered by the user to be displayed using currency format. I have used the Format String Dialog that opens from the ellipses button on the FormatString property of the combobox and selected Currency. This put C2 into the FormatString property.
When I run my application, this format is not applied to the value entered into the combobox at the time the number is entered or when I leave the combobox.
I am currently making a game with multiple levels when you complete one level the form hides and shows the form for the next level. But the keydown event doesnt work on the second level. How can I make it work?
View 1 RepliesVisual Studio 2005 SP1cr10 developer also installedOn XP machine, works fine. Got a Windows 7 machine(64bit and all) and copy over the project, run it and can't, I get an error in each crystal report gets an error [code]I take these lines out, and no more error for the report. Since there are like 40 reports in a project and there's 5 different projects that would have to be altered, this will be a pain. And I'm not the only developer. Another developer, on Vista and another will be coming in on XP, don't have this issue. I've tried uninstalling everything Cr and visual studio, then reinstalled visual studio and ran it, same thing, then installed SP1, same thing, then updated security fixes, same thing. CR10 isn't installed. I've removed and added the references back ,they seem to be the exact same versions.
View 3 RepliesI have a basic three form application. It doesn't seem to close after navigating through forms. If I were to open the application, and the main form is displayed. If I press the X button, the application closes fine(Goes from processes) If I were to open the application, and then navigate from the main form to another form using me.hide & form1.show, and press the red X on Form1, the application again, closes fine.
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I'm having trouble getting this sub to work on Windows 2003. It works on Windows XP and Windows 7. Windows 2003 has "wininet.dll".
change_proxy("123.115.112.222:3128")
*********************************
Public Sub change_proxy(ByRef proxy_port As String)
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I am trying to SendMessage to an app called 'Signal threads' - a test app which sends out a message called TV1_Threads, and listens for a reply. I have shown the values of each variable in the commented areas.
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I have a MDI form that has a child form that is opened by default when the application loads. I also automatically maximize the child form. Even though I have set ShowIcon to false, the little blank image that indicates that there is no icon appears in the upper left hand corner of the form. Is there a way to get rid of this?
Private WithEvents m_frmLineItems As frmLineItems
m_frmLineItems = New frmLineItems(Me)
mfrmLineItems.WindowState = FormWindowState.Maximized
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When I do this
Public Class cInherits : Inherits Panel
I get this: Base class 'System.Windows.Forms.Panel' specified for class 'MenuButton' cannot be different from the base class 'System.Windows.Forms.UserControl' of one of its other partial types.
How do I inherit?
i need to get data from checkbox in a groupbox. in the groupbox, it also have a label. so my coding as below
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I have one tool which we developed on visual studio 2010. there are basically two parts of my project, one is UI part which i wrote in VB and algorithm part which is in C++ on back end. When we compile C++ part it creates a .dll which is used by my front end VB program.
Now my problem is little weird since i am compiling and deploying this tool on windows xp machine but some of the users are using windows 7 64 bit machines and after running the program for about 5-10 minutes, it crashes on windows 7 with following error
Not enough storage is available to process this command and when i view details of that error, i get the following description.
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.ComponentModel.
************** Loaded Assemblies **************
mscorlib
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i am completely clue less for this error since this program works fine on xp but doesn't work on windows 7.
I am trying to use values from form1 in my project, in form2, but Im not sure how to do it. I've tried
txtboxTotal = (Form1.vsbLength * Form1.vsbWidth) * Pattern
But I get: operator '*' is not defined for types 'System.Windows.Forms.VscrollBar' and 'Systems.Windows.Forms.VscrollBar.'
Private Sub wb_Scrape(ByVal sender As System.Object, ByVal e As
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