VS 2008 - Structure Cannot Be Indexed Because It Has No Default Value
Mar 8, 2010Structure EmployeeData
Dim EmployeeName As String
Dim JobTitle As String
Dim TaxRate As Single
End Structure
[Code] .....
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Structure Cannot Be Indexed Because It Has No Default Property (WITH CLAUSE)
Nov 29, 2011Am getting: "Structure cannot be indexed because it has no default property". What am I doing wrong?
With grid.Rows(10).Cells
Dim note As New Note With {.ID = "Blah", _
.Date = "1/1/2011", _
.Message = "AAA", _
[code]....
VB Listbox Cannot Be Indexed Because It Has No Default Value?
Mar 17, 2010I have a listbox and I want to loop through each of the items to see if the string im looking for is inside. I know I could do .contains but that wouldnt look at substrings. The code im using looks like this:
While tempInt > Listbox.items.count then
if searchString.contains(listbox(tempInt)) then
end if
tempInt+=1
end while
Everything in the loop is fine but VB gives an error on the listbox(tempInt) part. The error is "class windows.forms.listbox cannot be indexed because it has no default value". get around the default value crap? I tried putting in a blank string but no change.
Class Cannot Be Indexed Because It Has No Default Property?
Apr 2, 2010I am new to classes, and I am new to Visual Basic in general, but I am working on a multi class program. The code seems to be correct, but I am trying on instantiate a class oject with the code:
View 3 Replies.net - Class 'clsGetHeaderValue' Cannot Be Indexed Because It Has No Default Property?
Oct 28, 2010I am getting a strange error when I try to build my solution. The error occurs when I am calling the oGetHeaderValue function and passing the parameters.
Dim oGetHeaderValue As New clsGetHeaderValue
Dim returnString As String
returnString = oGetHeaderValue(strInvoiceNumber, strOrderNumber)
The error message is: Class 'clsGetHeaderValue' cannot be indexed because it has no default property.
Declare COM-visible Default Indexed Properties
Jul 27, 2009how do you declare a default indexed property in VB.NET such that it is callable from VBScript?[code]
View 3 RepliesInput Box Cannot Be Indexed - No Default Property Error
Apr 26, 2012I am newer in VB NET.
VB code:
Public Class InputBox
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim a, b, S, p
a = InputBox("Enter length")
b = InputBox("Enter width")
S = a * b
p = a + a + b + b
End Sub
End Class
In InputBox lines i get this error:
Class 'LearningVB.InputBox' cannot be indexed because it has no default property.
'System.data.datatable' Cannot Be Indexed Because It Has No Default Property
Jun 2, 2011[code]This is my Code the error is Class 'System.data.datatable' cannot be indexed because it has no default property.. When i try this code in oledb it works but here it wont..
View 1 RepliesAsp.net - Class 'System.Web.UI.WebControls.TableRow' Cannot Be Indexed Because It Has No Default Property
Mar 11, 2011What i am having trouble doing is set the current parameter to the current row at a specific column like e.row[column index]
For Each trow As TableRow In table.Rows
cmd1.CommandText = "dbo.directway"
cmd1.CommandType = CommandType.StoredProcedure
cmd1.Connection = conn
[code]....
Class 'System.Web.UI.WebControls.TableRow' cannot be indexed because it has no default property.
Error: Interface 'System.Web.Mvc.IValueProvider' Cannot Be Indexed Because It Has No Default Property
Nov 19, 2009This used to work.
<AcceptVerbs(HttpVerbs.Post)> _
Function Widget(ByVal collection As FormCollection) As ActionResult
...
If ... Then
[code]....
I upgraded to ASP.NET MVC 2 Beta and ASP.NET MVC 2 Futures Assembly for Beta and now ToValueProvider() fails with this compile-time error: Interface 'System.Web.Mvc.IValueProvider' cannot be indexed because it has no default property How do I use ModelState.SetModelValue() if not with collection.ToValueProvider()?
How To Retrieve Default Value Of Given Structure
May 23, 2012If I execute the following statement: dim defaultDate as Date = Nothing defaultDate contains the default value of the Date structure.I suspect there is a clean way to retreive this value, like some kind of buitin constant, but i was not able to find it.What is the clean way to retrieve the default value of a given structure in VB.net ?
View 3 RepliesVS 2008 Intellisense, Indexed Properties?
Sep 26, 2010I've wondered this for a while, when I hover over an object's properties when the program is paused (from a breakpoint) I can see the values of each property but when it comes to a collection it wont list the objects in the collection unless I specify an index, how do I specify an index?Basically I have a form with a ToolStrip that has 12 items in it, I would like to see what the 12th item is but can't because it's an indexed property.
View 2 RepliesVS 2008 Convert The XML Structure Into A Class Structure?
Apr 25, 2010I'm having a problem that's driving me crazy; I can't understand how to convert the XML structure into a class structure (that I want to use to hydrate a XML document).
The XML document looks like this:
xml
<?xml version="1.0" encoding="utf-8"?>
<artists xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns="http://www.spotify.com/ns/music/1">
[code]....
Structure Inside Another Structure Receives Null Reference Error?
Jan 5, 2012Module Module1
Public Structure structure1
Public TRANS() As structure2
End Structure
Public Structure structure2
Public X() As Integer
End Structure
End Module
Class Structure - Large Structure That Has Lots Of Properties ?
Jan 5, 2010I'm new to VB 2008 after having spent a long time with VB6, so I apologize if this is a stupid question. But I'd really like to have this straightened out.
Let's say I have a pretty large structure that has lots of properties.
Code:
Now say that I want an internal database with about 10 instances of this structure total, describing, say, 10 different products that a store sells. When these values are loaded from a database, they remain totally static. (However, they can be different each time a program loads)
Now say that I have a class. Each instance of this class is a type of that BaseProduct structure. Meaning, each instance of the class pertains to one of the 10 types of products that the store sells. However, this class has additional properties that pertain specifically to each instance, which are not static.
Code:
Now, the problem here is... If I have 200 different transactions, each one contains an instance of BaseProduct. BaseProduct is HUGE, and is largely redundant (only 10 types possible), so I think it's a little silly to include a whole copy of it with EVERY transaction. However, the Transaction class really needs information regarding the base product it pertains to. Is there a way to, instead of declaring a New BaseProduct in the Transaction class, to simply make one of the properties of the Transaction class a pointer to a BaseProduct variable?
In VB6, I would accomplish this by making a BaseProduct(10) array, and then giving each Transaction an ID number referring to an entry in that array. But in VB 2008, using class structure, this is impossible. I can't define the BaseProduct(10) array outside of a class in a namespace, and if I define it in the actual application's form, then the class loses modularity since it relies on the application that's using it.
Converting Structure Within Structure To Byte Array For Socket
Aug 29, 2009I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login
Dim Header() As COMMANDHEADER
Dim UserName() As PSTRING
[Code]....
Invalid Structure Size When Marshalling C Structure To .NET
Apr 14, 2012I'm experiencing a problem with the following c-structure:
typedef struct tagTEXTUREPROP
{
DWORD dwSize;
[Code].....
The Marshal.SizeOf obviously calculates a size of 76 and it works with the DLL function, but it leaves me with some bad feelings.
Creating Structure In 2008?
Apr 3, 2012how to create a structure in Visual Basic?r example:
Public SCARD_READERSTATE()
Dim szReader As String 'reader name
Dim pvUserData As Long 'user defined data
[code]....
I'm using Microsoft Visual Basic 2008.
How To Use Constant In Structure In VB 2008
Aug 8, 2009I want to know that how we access a constant which is declared in a public structure, with an instance of that structure?
View 7 RepliesVS 2008 DateTime Structure?
Jul 29, 2009I want to pick specific elements from DateTime and assign them to variables: Year, Month, Day, Hour, Minute, and Second. In MSDN, I saw ways to assign it all, but not what I needed.
Can anyone one give a hint, or two?
VS 2008 Some Hint About Structure?
Mar 13, 2010Im triing to use structures.example
Public Structure Column
Dim ID As Integer
Dim Name String
Dim Birth As Date
End Structure
1) Is possible know how many element are in the structure?
2) is possible retrive the type of the data inside a structure? (Integer, String, Date)
3) is possible scan the element without use their name (by using an index as in the string) instead of use Column.ID=1 ? If the none of the questions are positive, what other stuff should i use that allow me to do that?
VS 2008 TreeView Structure
Mar 31, 2011The General TreeView Structure, with the level indicated in the left.[code...]
Leaving the 0 and 1 levels, the other levels has to be treated as above. How to achieve this?
VS 2008 Using ArrayList With Own Structure?
Oct 11, 2009I'm trying to use my own structure as a dynamic array (ArrayList?) but can't find the right syntax.
Public Structure BLsCompsRootDir
Public BL As String
Public Component As String
[code].....
VS 2008 XML Structure To String?
Sep 23, 2011writing an XML-formatted string so that I may later encrypt it.If I create an XMLDocument,it will insert its formatting tag <?xml version="1.0" encoding="Windows-1252"?> and I need to avoid this.I'm not very familiar with streams, or how to output an XMLWriter to one.
View 3 Replies[2008] Enum In Structure
Feb 4, 2009I am coding in vb.net. I want to achieve something like this (sample) -
Structure Transport
Dim land as L
Dim Air as A
[CODE]...
But though i can create enum but how can I embedd it in structure. It is not allowing me to do that.
[2008] Getting Structure Outside Module?
Feb 27, 2009I am using Visual Basic .NET 2008. I have a module in my project and couple of windows forms. Now in my module I wrote -
Structure Transport
Dim Veh as Vehicle ' pointing to enum below
Dim GoAhead as boolean
End Structure
[code]....
What I want is that another form should be able to call my sub Select (declared as public) and pass enum data declared in Transport structure. VB allows me to do that if my sub is private but not if my sub is public. To overcome this issue one solution is to declare the enum in the form class itself. But for this I will have to do it in each form.
# Of Indices Is Less Than # Dimensions In Indexed Array?
Oct 11, 2009Public Sub LoadFromFile()
Dim sr As New StreamReader("CoverageArea.dat")
Dim strAreaLine As String[code].....
I have a question about that strAreaInfo()...I left the () with no number in it so that it wouldn't have a set # of values, and then I tried to give it 3 values, but I get the error in the title. Am I doing something wrong when I declare it?
.net List(of T) Not Returning Indexed Object?
Sep 30, 2011I'm working on a small game that is based on a map of grid squares.I have a class (clsGrid) that stores a few properties for each grid square.The grid square objects are organized into a list(of clsGrid).A loop and stream reader are successfully reading properties from a text file, putting the properties into grid objects, and adding the grid objects to a my list of grids. When retrieving a grid from the list of grids, I'm getting unusual results. Regardless of the index I give the list, I always seem to get the last indexed grid in the list.The debugger seems to suggest that the right numbers are being read into the stream reader and they are being added to gridHolder. However, the message box at the end will always show me the LAST grid.id, regardless of the index I give it.
'A subroutine that generates a map (list of grids)
Sub GenerateMap()
Dim reader As StreamReader = File.OpenText("map1.txt")[code]....
Assign An Image To The Indexed Item?
Jul 6, 2009I have a form with a lot of PictureBoxes. I created an array of these by name, but when I index the array I cant assign an image to the indexed item. In fact all the indexes appear to be nothing. Is there a way to create an array of controls and access them from the array?
View 2 RepliesBinding To Indexed Property With String Key?
Sep 14, 2009Say I wanna bind to dictionary that TKey is string with XAML:<Label DataContext="{MyDictionary}" Content="{Binding Item("OK")}" />Doesn't work.How should I do it?
View 1 Replies