I'm converting some C# code to vb, and (having had some help from the community here already) have encountered another problem. [code] SurveyQ is a class I'm referring to. Converting the type doesn't seem to work. I've figured that I can't use "=" when converting types and have got this as far as: [code] but I now get errors on the GetType(SurveyQ) part, with the error "Keyword does not name a type".
View 2 RepliesI have a DataGridViewCell object and I need to find out if its a string.
If row.Cells(cellIndex).ValueType Is "".GetType() Then
or
If row.Cells(cellIndex).ValueType Is Type.GetType("System.String") Then
I am making a function to create a dataTable but I have problemt with the getType() of the columns
Public Shared Function createDTable(strArray as string, separator as string) as dataTable
Dim newArray as new arrayList(stringToArray(strArray,","))
[Code].....
I have a very simple problem where I have a MyList As List(Of MyBaseClass) but and a couple of MySub(ByVal Dummy As MyDerivedClassA)/MySub(ByVal Dummy As MyDerivedClassB). So I want to do the following ...
For Each MyInstance As MyBaseClass In MyList
MySub(DirectCast(MyInstance, MyInstance.GetType())
...
[code].....
I'm trying register presenters with Windsor using the convention based method but trying to do this in VB.NET, but the problem is it does not want to compile this statement:
Dim type = GetType(AbstractPresenter(Of))
I am getting : Too few type arguments to AbstractPresenter(Of TView, TPresenter)
Which I don't understand because this is a valid statement according to question. Also showing valid in other C# to VB.NET converters when converting typeof(AbstractPresenter<>).
The "GetType" method returns a type so why does VS flag the "DirectCast" statement as invalid?
Sub Main()
Dim d As C = New C
d.Value = 5
Dim o As Object = d
[code]....
I'm developing a vb.net program with VS2008. In my case, dt_list is a instance member as List(of Single). When I wrote dt_list = CType(ser2.Deserialize(r), dt_list.GetType()) VS2008 complains about "Type 'dt_list.GetType()' is not defined.".
View 2 RepliesWhat's the difference between "typeof" and "getType"?
View 3 RepliesI am trying to get the type of a class by calling Type.GetType(), however it is throwing an null reference exception. I'm supplying the fully qualified name of the class as a string, I'm not sure what I am doing wrong. Here is what I am doing:Type.GetType("The.Name.Space.TheClassName")That is the fully qualified name of the class, it works fine for import statements.
View 2 RepliesThe code below works for the class that I hard coded "XCCustomers" in my RetrieveIDandName method where I use CType. However, I would like to be able to pass in various classes and property names to get the integer and string LIST returned. For example, in my code below, I would like to also pass in "XCEmployees" to my RetrieveIDandName method. I feel so close... I was hoping someone knew how to use CType where I can pass in the class name as a string variable.
Note, all the other examples I have seen and tried fail because we are using Option Strict On which disallows late binding. That is why I need to use CType.I also studied the "Activator.CreateInstance" code examples to try to get the class reference instance by string name but I was unable to get CType to work with that.When I use obj.GetType.Name or obj.GetType.FullName in place of the "XCCustomers" in CType(obj, XCCustomers)(i)I get the error "Type 'obj.GetType.Name' is not defined" or "Type 'obj.GetType.FullName' is not defined"
'+++++++++++++++++++++++++++++++
Imports DataLaasXC.Business
Imports DataLaasXC.Utilities
[code]....
I found on msdn samples and modified (add Thread.GetDomaind.UnhandledException)
<SecurityPermission(SecurityAction.Demand, Flags:=SecurityPermissionFlag.ControlAppDomain)> _
Public Sub Main()
' Add the event handler for handling UI thread exceptions to the event.[code].....
It appears that my favorite thing in the world is tackling projects that are beyond my current knowledge and abilities. I have a little project that I am working on which is a simple image viewer stocked with (upon completion) your standard Load..., Next/Previous, Zoom In/Out, Actual Size, and Full Screen capabilities. However, I am running into a few snags:
(1) I've been able to get my "Load..." button to display a file dialog box, but I cannot seem to get a working filter (with which only image file types are allowed to be selected) in working order.
(2) I have a PictureBox object (entitled PictureBox1) that displays the image selected via the file dialog box, but it loads images in their full size (1:1/100% zoomed) state without scrollbars, etc. to allow me to navigate the loaded image. I would like to have it load the image, initially, to fit within the dimensions of PictureBox1 and from there be able to zoom in/out via my "Zoom In/Out" and "Actual Size" buttons and be able to scroll if the zoom level is beyond the dimensions of PictureBox1.
(3) It dawned on me that I haven't the faintest idea how to get my "Next/Previous" buttons to allow the user (me) to navigate, in succession, the images contained in the folder in which the currently loaded image is stored. [code]
If it is deemed that this thread is inappropriately requesting help, I ask that it be locked/deleted quickly as I recognize that this is a large community with many discussions going without need of unwelcome posts.
I'm using loop to read data from sql and then make some calculations then save it again to another table but when application loop for 3 or 4 times it's freeze but the job is done but if loop = 10 or more then it is freeze and hangup for long time .i need to learn how to make my application working better and never freeze and make application working with any count for loop without freeze .
View 7 RepliesI can't understand why this is not working.
[code]...
I am moving over to vb.NET and am experiencing the learning curve. Am learning quickly, but I do have a question for anyone who can respond. vb6 could be made to run much faster by going after the GDI API directly, rather than going through vb6's standard wrapped functions like Line(), and Circle(). Now that I am working with vb.NET and GDI+, as far as I can tell there is no wrapper anymore and you hit GDI+ directly "right out of the box". Is this true? It looks like trying to phenagle the old vb6 API code can't work because .NET does not use GDI anymore...it uses GDI+ via the System.Drawing namespace.
View 16 RepliesI'm developing application using RS485.
Which is working fine when i debug from project itself but when i run after building .exe it is not getting any reply back.
After some try and error i found that RTS(Request to Send) is the reason behind this problem.
Port.RtsEnable = True
Port.Write(DATA)
Port.RtsEnable = False
I added FileSystemWatcher in Form1_Load like this -
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
....................
[code]....
I can't figure out why my addhandler is not firing?In the Sub "CreateTagStyle" the AddHandler is not firing when the LinkButton is clicked Is there some reason that addhandlers can't be added at certain points of the page lifecycle?
<%@ Page Title="" Language="VB" MasterPageFile="~/_Common/Admin.master" %>
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
[code]....
I am using the CustomValidator for the first time but it doesn't seem to be firing DateExpireRequired_ServerValidate and just runs the code in the Click action.Been bugging me for a couple hours now! can anyone see a problem with what im doing?The DropDownList in my code below is populated using Roles.GetAllRoles()
ASP.NET
<asp:Label ID="lUserRole" runat="server" AssociatedControlID="tUserRole">User Role:</asp:Label>
<asp:DropDownList ID="tUserRole" runat="server" CausesValidation="True">
</asp:DropDownList>
[code]....
I'm trying to get get the short filename from a long filename but I'm having problem in c# code. VB.Net code is:
Declare Function GetShortPathName Lib "kernel32" _
Alias "GetShortPathNameA" (ByVal lpszLongPath As String, _
ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long
[Code]....
But I cant get the c# version work. Am I missing something or what is wrong?
I have a Class Library that is exposed to COM like this:
<ComClass(SomeClass.ClassId, SomeClass.InterfaceId, SomeClass.EventsId)>
Public Class SomeClass
Public Const ClassId As String = "GUID1"
Public Const InterfaceId As String = "GUID2"
[Code]....
Compile error:
Function or interface marked as restricted, or the function uses an Automation type not suppport in Visual Basic.
What do I need to do to properly expose this Method so I can use it like this?:
SomeClass.SomeMethod 1, 2, 3
I have an SQL command I am attempting to execute.The syntax is as follows
[Code]...
I'm using the ZipForge to extract an archive in VB.NET.When I run the code I get no errors, but it doesn't extract any of the files. This is the code I'm using:
ZipForge1.FileName = "Archive.zip"
ZipForge1.OpenArchive(FileMode.Open)
ZipForge1.BaseDir = "C:Extract"
ZipForge1.ExtractFiles()
I'm getting an ArgumentOutOfRange error when using substring function in .NET. I'm new to .NET so probably doing something wrong. I have a txtField, which is a text field component in GUI. I'm using Microsoft Visual Basic 2010 Express
txtField.Substring(txtField.Length-4,txtField.Length-1)
If txt.Field contains only numberic values it works ok, but as soon as the text field contains characters it breaks.
I have a COM dll that has been developed under vb.net. The Control works just fine in IE 6 and IE 7, but when IE 8 tries to load the control, the browser crashes. I look at the event viewer and I get an error 1000 about iexplorer.exe and mshtml.dll. Do I have to build this com dll with IE 8 on my development machine? How can I track down what is wrong with the Control?
View 2 RepliesI created an activex in vb6 and used it asp.net. It work perfectly in ie6 . But not working in ie8 . No errors showing. In security setting I enabled activex option just like i changed in ie6. Only the small square i can see in ie8.
View 2 RepliesAccording to all posts I have seen, this shold work, but of course it doesn't, does anyone see what is wrong....
DBF is on C: emp est.dbf
Dim DB As New ADODB.Connection
Dim RS As New ADODB.Recordset
[Code].....
Can someone please show me an example of how I would start a timer when viewing another window such as Mozilla Firefox? I would prefer it be started with a keystroke.
View 1 RepliesI have developed an application is VS2010 ( VB app using .NET4 ) ... the application runs fine under Windows 7 and on (3) XP machines we have here. Had one user looking for support on an XP machine ... when he started the app nothing happened. No errors or anything, just nothing happened. Had him install the latest .NET4 framework and everything was fine.
Just had another support issue ... user with the same complaint ... had him install latest .NET4 ... but this time did not fix the issue ... still nothing happens when he clicks to start the app ... no errors ... just nothing happens.
I can't check this because it runs on all our XP machines .... Is the only criteria that .NET4 be installed? I created an install that includes only the EXE from the BINRELEASE folder ... nothing else. Do I need anything else. Strange that it works on all our XP machines.
my application required the dropping of resources when a button is pressed.It seems when this button is pressed on XP everything works swimmingly, however...
on windows 7 and vista the button simply dosent do anything, ive tried elevating to admin etc..
Is it possibly due to how it creates/drops resources?