I am working on a produce inventory database in my VB Express program. I have a form on the bottom and a spreadsheet at the top. I want to enter all the data in the form and have that data automatically transferred as a group to the spreadshet in the upper part of the page when I press a button.
I know that there's an insert function. I set it up correctly. The problem is that I have to convert the textbox, which contain string data, to the datatype used in the database spreadsheet. HOw do I use CAST or do this?
how can i convert these datatypes: date to string and integer to string.Because it must be in a string datatype when I display it in a datetimepicker and textbox.
I need to call a function that expects a DataType as a paremeter. I fail to get the right syntax to specify a datatype (integer, string, single, boolean, etc):
Public Sub AddSetting(ByVal PropertyName As String, ByVal PropertyType As Type, ByVal DefaultValue As String) Dim p As New SettingsProperty(PropertyName) p.PropertyType = PropertyType p.DefaultValue = DefaultValue [Code] .....
Ever since I moved from VB6 to VB.NET somewhere in 2005, I've been using CType to do casting from one data type to another. I do this because it is simply faster to type, used to exist in VB6 and I do not know why I have to be using DirectCast if there is apparently no difference between them.I use TryCast once in a while because I understand that sometimes casting can fail. I however cannot get the difference between CType and DirectCast.
I defined the following extension of the Date? data type
[Code]...
But when I moved my compiler definition to a separate DLL, I the ToObject method was no longer available from my project even though I had referenced the Class project which now contained the extension. Is this a limitation of the Compiler Extensions? HOw do you get reusability out of them?
It looks like they are converted to regular date types in the generated proxy object.I'd like to optionally pass null values for these dates.Other than switching to WCF (no time to learn it right now), what is the best way to handle this situation. It looks like I also cannot pass NULLABLE date types.
LANGUAGE: Visual Basic .NET VERSION: 3.5 IDE: Visual Studio 2008 OPTION STRICT: on OPTION EXPLICIT: ON
I need to populated a ComboBox and a CheckedListBox with a list of the Windows Accounts on the host computer. I also need to the user to be able to apply settings to the users individually. Thirdly, I need to find a way to add a startup registry key in the CURRENT_USER for a different user than the "Current User" (For example: User1 is an Administrator. User2 is a Limited Account [can't modify registry]. User1 needs to add Registry key to User2's "CURRENT_USER". This is a parental control application so the Admin accounts need to be able to access the registry from all users without affecting all users at once. I do not have any code to paste because I still have not the foggiest idea of where to start. I think it probably has something to do with an array (I have no experience with arrays whatsoever) but I am stumped from there. I'm a new, self-taught programmer so I speak idiot at times,
Summary of Questions 1) How do I retrieve a list of Windows Users? 2) How do I populate the objects above with such a list? 3) How do I interact with the items on that list (specific user accounts)? 4) How do I modify another user's CURRENT_USER Registry key?
my project was intially mandated to be done in c#.however a large contributor to the project wrote much of the business logic, which he knows well, in vb.net.How difficult would it be to convert the following c# code into vb.net.
i wanna try to convert this ASM code into vb.net or at least find a solution that will allow me to enable this script after creating a handle on a kernel32 process.
I am looking for some library or code that will allow me to convert mp4 video to mp3I want it to be for free and compatible with the latest .NET framework (4).Also, if possible, I am looking for a free ffmpeg wrapper than I can have in my vb.net application without trial or messageboxes.
Will Microsoft Visual Studio 2008 convert my app to an app I can use on the Internet. I've used it to help convert up from 2005 but I'm looking so save time in creating a web app version.
I developed a windows application in VS2008 as 2.0 . I would like to migrate to 3.5 . This really basic but how do I do that? It seems like I should just change a few parms somewhere, but I can't find it.
Dim hex as String = "FFFF" Dim int as Integer = Val("&h" & hex)
The problem is that it only returns a signed integer, so the example above gives -1 instead of 65535. Is there a way to make Val return a Long instead f.ex. , or an other way ?
I'm currently converting a VB6 app to vb.net 2010 and i'm struggling to convert the following code and was hoping that someone could assist me. Im rather new to .Net [code]...
