In the following two code snippets, the code does the same thing, when I tested this.
Dim test As New Class1 Dim test As New Class1() Do the parantheses make a difference in some way? Is there an explanation of this in the msdn library?
I am using Visual Basic Express 2008 to make a simple game. I am trying to declare a dataset object and datatable but I'm getting a bizarre syntax error and I can't find a help reference.
Line A - I dimension GameTable as an Object
Line B - I instantiate the object
Line C - I edit data in the GameTable
Line D - I display the data in Visual Basic
Line C will crash in runtime if I don't do sometype of "New" declaration
Line B is my attempt at a "New" Declaration by I get an error message I don't understand - "Type Expected" - I think I have the syntax wrong here.
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im sure im mis-wording the concept but here it is anyways. I know in CSharp you can do
el.AppendChild(new UISize(file, "TSize") { CX = 95, CY = 20 });
which declares a temporary bucket variable and then assigns the associate property values to the variable. Which then sends it to the XMLElement AppendChild method. What is this design concept called? What is the conversion to VB.Net? I have tried using my own online utility that does a 90-95% conversion rate from C# <-> VB.Net. It has failed in this instance, and so need a hand-up on what i am looking to do to convert this from C# to VB.Net. I would really like to not have to do a long-declaration of a variable with assignments, if at all possible.
I have a query that pulls data from an ODBC linked table to a local table for later manipulation for a report. Our administrator has now required that this be done WITH(NOLOCK) I keep getting the runtime error 3257 syntax error in WITH OWNERACCESS OPTION declaration. I have tried to add it to the WITH but get the same error.
CurrentDb.Execute "INSERT INTO dbo_tblEvents_NEW SELECT dbo_tblEvents.* " & _
"FROM dbo_tblEvents WITH (NOLOCK)INNER JOIN DateRange1 ON dbo_tblEvents.DateCompleted = DateRange1.Date" & _
"WHERE (((dbo_tblEvents.UniqueActionID)=1110) AND ((dbo_tblEvents.ModifiedDate)<= " & dteEnd & "));"
dteEnd is previously instantiated
If we are within the derived class then ofcource we can use MyBase keyword to access base class's object reference . That's fine , how can we take that base class's object reference outside that derived class's definition.
My following code will explain what i want . Actually that is giving error right now, but it is explaining my requirement .[code]...
I see a sample code that an object is instantiated within the class definition block. But when I test the folllowing, I got error "Process is terminated due to
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Can you define this :
Class
Object
Inheritance
Polymorphism
Abstraction
And could you make it easy to understand I'm having a hard time to understand those terms.
The last line in the code below throws the error. Is it because I haven't intialized the size of the byte array?
Public Class Form1
Private toSocket_IPP As Byte()
Public Sub New()
[code].....
I'm running VS2005, and when I right click on an object and select Go to Definition it brings me to the object browser instead of the actual code.Is there some settings that I can change to fix this? Note: it works properly for C# solutions, I am having the problem with Basic.
View 2 Repliesif I created a new object like this Dim sqlconn As New SqlClient.SqlConnection(cs)
and Dim sqlconn = New SqlClient.SqlConnection(cs) Whats the difference?
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I am getting an error in above line says: objrpt is not declared it may be inaccessible due to its protection level I agree it may be inaccessible if the condition doesn't met - but here if it doesn't met it will take CrystalReport2 know ?
I got problem regarding declaration of dynamic runtime array declaration Here is my code
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If we are within the derived class then ofcource we can use MyBase keyword to access base class's object reference . That's fine , how can we take that base class's object reference outside that derived class's definition.My following code will explain what i want . Actually that is giving error right now, but it is explaining my requirement .
Public Class Base
Public x As String
End Class
[code]....
Actually there is error in ReadOnly Property BaseReference's Getter . Error is "Error 1 'MyBase' must be followed by '.' and an identifier. " how can i get base class object reference in Main method ?
What is the appropriate declaration such as "ValueChanged" or "Click" for a NumericUpDown that will execute the code when I press enter. I already know that setting the "AcceptButton" property of the main form to a default button will not work, especially if I want a different button to be selected depending on which control I give focus.
PS: Is the syntax any different from Visual Basic 2010 Express than it is on Visual Studio 2012 RC (running in Visual Basic Mode)?
I'm using a MS Access 2007 database. I modified the field definition of one of the fields in a table, it a text field and I change the maximum length from 40 to 150. I have a data source in my app that contains this table and many others. I refreshed the data source but the change didn't take affect. I went through configure option but the change still didn't take affect. It gives me this error,
The value violates the MaxLength limit of this column.
If I add/delete a database field the data source is updated when I go through the configure process. I finally just deleted the table from my data source and then added it back.
i'm used to be a VB6 user and started move on to VB.NET few days ago and i'm still quite new to its new syntax.Today i came across there is a object declaration with the 'Nothing' keyword follows at the end and what it actually means? Dim l_Active As AvsIdentityType = Nothing
As i know Nothing keyword is usually used to release the instance to the object after we used it but why it is used in the declaration statement?BTW, the 'AvsIdentityType' is a public structure.
I've been programming for many years in many languages and I've seen the variable declarations conventions change. With VS 2010 I've noticed you don't have to declare the variable type. I work alone so I can use any method I want. But, someday I may want to sell some of my code so I would like to keep my programming conventions current.
In VS 2010 which of these would be considered the best convention?
Dim srtFirstName = "Bob"
Dim strFirstName As String = "Bob"
Dim FirstName = "Bob"
Dim FirstName As String = "Bob"
What is wrong with this Anonymous Object Initialize syntax?
If (Not row Is Nothing) Then
Dim info As New CultureInfo(Conversions.ToString(row.Item("cultureId"))) With { _
.NumberFormat = New With {.CurrencySymbol = Conversions.ToString(row.Item("symbol")), _
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I have been looking at some C# code:
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But I would like a List(Of Employee) as it is bugging me as to why this doesnt work in vb.net?
I have a form called document_form. I have three variables:
Dim Doc1, Doc2, Doc3 as Document_form
How do I check if a particular form exists? I want to show Doc1. If it does not exist I have to first create it.
Something similar to:
If Doc1 = Null Then
Doc1 = new (document_form).
End If
What's the best Object Browser / Syntax Training Manual? Looking for a good reference guide which helps me understand what I'm seeing with the object browser.
View 1 RepliesIn an ASP.NET 3.5 VB web app, I successfully manage to cache an object containing several personal details such as name, address, etc. One of the items is CreditNum which I'd like to change in the cache on the fly. Is there a way to access this directly in the cache or do I have to destroy and rebuild the whole object just to change the value of objMemberDetails.CreditNum?The cache is set using:
Public Shared Sub CacheSet(ByVal key As String, ByVal value As Object)
Dim userID As String = HttpContext.Current.User.Identity.Name
HttpContext.Current.Cache(key & "_" & userID) = value
End Sub
below are 2 lines of code i just wanted to be sure is the first type myInt a refrence type and the second variable myInt2 a value type?
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Anyone have VB.Net or VBA code to ascertain if an Excel Object is positioned over (Hiding) spreadsheet data?I have code to create/position a chart object. Where would I begin to determine if there is data "under" an object.
View 7 RepliesWhat is the syntax for != in .net?
eg
if text1.text != "Test" then
Msgbox "Not Test"
end if
I want to learn how to rotate an object by direction and speed and also how to move an object using the arrow keys?
View 2 RepliesI'm using the following code to try and search a listview (I got it from msdn):
Dim atem As New ListViewItem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then
ListView1.TopItem = atem
End If
Then I got the " Object reference not set to an instance of an object" error highlighting the following line: ListView1.TopItem = atem So then I tried this:
Dim atem As New ListViewItem atem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then ListView1.TopItem = atem End If it still isn't working.
I am struggling with the following - I try to add a value to a list, where the list is defined in a structure.
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With Parallels and WinXP installed, I thought I'd put VisualStudio back on my computer and tinker around a bit, but it's been a while and I'm a bit rusty with it. Can someone refer me to a quick and easy guide to VBasic syntax?
View 2 RepliesCan someone give me a reference in using ASCII in VB2010. Is this code correct? "txtText.text = txtText.text & txtNewText & chr(13)".Im trying to accomplish here is, I have two text box. Once I entered a text in txtNewText the text is added in the other text box (txtText.text) without deleting the previous text. But i want the new text to be at the next line. That is why I use the "chr(13)" code.
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