VS 2005 Underlining The "IEnumerable" And Saying "Type Expected
May 1, 20101. When I try to do something like; Imports System.Collections
[Code]...
ADVERTISEMENT
C# - Getting Type T From IEnumerable<T>
May 25, 2009is there a way to retrieve type T from IEnumerable<T> through reflection?
e.g.
i have a variable IEnumerable<Child> info; i want to retrieve Child's type through reflection
Unable To Cast Object Of Type 'ImagesFlag' To Type 'System.Collections.Generic.IEnumerable`1[ImagesFlag]'
Jan 7, 2012And here is the code that produces the error
CODE:
How can i cast this one?
IEnumerable Interface As A Type?
Jan 13, 2011While learning to use LINQ in VB.NET, I came across the following:Dim x As IEnumerable = (some LINQ query)
If you can't instantiate an interface, but only a concrete implementation of it, why is this allowed? Is there some difference between doing Dim x as (Type) and Dim x as New (Type)?
InvalidCastException When Trying To Convert To IEnumerable Type?
Sep 10, 2010The following line is giving me an InvalidCastException when trying to convert to IEnumerable type, even though I have implemented IEnumerable interface. Return New CountryInfo(CountryCodes(i), CountryNames(i)) (also in bold below)
Imports System
Imports Gaia.WebWidgets.HtmlFormatting
Imports System.Collections.Generic
Imports System.Globalization
[code]....
C# - Arrays - Use The IEnumerable<T> Interface And Make It Type Specific
Mar 1, 2011In many projects I work on, whenever I have to return a read only collection, I use the IEnumerable<T> interface and make it type specific like so:
CODE:
Most of the time, I return a List but in some functions and read only properties I return an array which also serves the purpose alright by kind courtesy of Extension Methods.
My question is am I violating any design principles by returning IEnumerable<T>s instead of specific types (e.g.: List<T>, HashSet<T>, Stack<T> or Arrays)?
C# - Convert Datatable To IEnumerable<T> To Pass To Result<T>(IEnumerable<T> Data);?
May 9, 2011I have an object called Result<T> that has a constructor which accepts an argument of IEnumerable<T>. I'd like to be able to pass in a datatable if possible.
I tried datatable.AsEnumerable(), but where I bind to the data it was complaining that 'MyProperty' is not a field or property on type 'DataRow' - which makes sense since 'MyProperty' isn't a property on 'DataRow', but it was a column in my datatable.Is there a way to convert a datatable to something that I can pass into the Result object and still have it bind to, say, a gridview?
Creating A Gridview And Gather The Data From Various Functions That Return A Type Of IEnumerable?
Feb 28, 2012I am creating a gridview and need to gather the data from various functions that return a type of IEnumerable. I've created gridviews using a dataset as a datasource, but how does one use multiple data sources(of IEnumerable) to populate one gridview? Like how do you combine all that into one dataset?
View 1 Replies.net - Transpose 2D Array That Exists As IEnumerable Of IEnumerable?
Dec 16, 2010I tried using the linq Zip method on IEnumerable but it does not work for more than 2 arrays.Here is an example in Python of what I am trying to do(I got p - nested IEnumerable - and need q - another nested IEnumerable):
>>> l=['a','b','c']
>>> m=[1,2,3]
>>> n=['x','y','z'][code].......
Getting Error: Type Expected?
Apr 9, 2010Everywhere text is in Black i get the error "Type Expected"
Private Sub Done(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserDocumentCompletedEventArgs)
TabControl1.SelectedTab.Text = CType(TabControl1.SelectedTab.Controls.Item(0),
[code]....
WinForms - Type Expected On New Point?
Jul 16, 2009For this line:
Private _allowedLocations As Point() = New () {New Point(50, 50), New Point(500, 500), New Point(700, 100)
I am getting the error "type expected for 'new ()'.
XMLSerialization (VS2008) : The Type A Was Not Expected
Mar 4, 2009I have a class A that has a SectList (which inherits from ArrayList) of objects of class B.I make class A <Serializable()>, as well as SectList and B.objects of class B are added to the SectList as the program runs.Upon serialization, I get the message that B is unexpected and that I should use XMLInclude to specify classes that are not known statically. How and where exactly should I use XMLInclude ?What is XMLInclude's parameter ? <XmlInclude(GetType(B))> ?Where is a good and solid explanation of serialization in VB,, where these phenomenae are well explained ?
View 2 RepliesDatasource - An Expression Of Non-boolean Type Specified In A Context Where A Condition Is Expected - Near ')'
Jun 24, 2011I am developing a VB.NET ASPX file and am trying to run a string query in VB.NET, but now I get the above error message. How can I determine the cause? Some of the code in this
[Code]...
How To Underlining Strings
Dec 14, 2009For example, my string is this
Dim thisString as string ="Elephant Tails:"
Dim field(0) as string = "Appalachian Mountain"
[code].....
Underlining When Printing?
Apr 1, 2010I have a question regarding printing using the e.drawstring method. My question is: how do you get items you print to appear underlined? I have posted my code below, however when i try to add ".underline" after "headingFont," I get an error stating that: "Overload resolution failed because no accesible 'Draw String' can be called with these arguments.
Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
[code].....
Error : Value Does Not Fall Within The Expected Range .Net 2005
Apr 30, 2009i'm using VB.Net 2005 application program.i'm trying to convert VB6 code to VB.Net 2005. QSockB is DLL file.this is the code i used for VB6. This is code i'm using to create socket, when program runs... and when i hit start button it calls Q_SendHeader function.
Form1_Load(.....................
Q_KDSPort = &H8000&
Q_MyPort = Q_KDSPort + &H100&
[code]....
This works fine in VB6... but Q_SendHeader is not working in VB.Net 2005.
VS 2005 External Table Is Not In The Expected Format?
Dec 17, 2010with VB.NET + ACE 12.0 + MS office 2003.
my connection string is
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Fx & _
";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1';"
[code].....
Get A Class Properties Underlining Variable?
Jan 5, 2010Is it possible to get a Class properties underlining variable.because GeValue / SetValue need and object to work with.
View 4 RepliesVS 2010 Client Found Response Content Type Of 'text/html', But Expected 'text/xml'?
Jan 29, 2012I am trying to implement a webservice but I am receiving this error :Client found response content type of 'text/html', but expected 'text/xml'.The request failed with the error message:Quote:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
[code].....
.net - ByRef Underlined With "Expression Expected" Error When Trying To Pass In A Object Of Type List(Of ClsFooDetail)?
Mar 3, 2010I work with C# 99% of the time. However, I'm having to update some legacy VB.Net code and encountering an issue with VB.Net code syntax. The error that I get is "ByRef" is underlined and "Expected Expression" tag shows up when you hover over "ByRef". The "FooDetail.Load" function is written in C# and expects a List object passed as reference. Don't have any trouble using the same function in other C# classes. Can someone indicate what is wrong with below VB.Net code.
Dim FooDetail As New clsFooDetail()
FooDetail.FooID = FooID
Dim lstFooDetail As New List(Of clsFooDetail)
FooDetail.Load(ConnectionString, "Stored Procedure", ByRef lstFooDetail as System.Collection.List(Of(clsFooDetail))
VS 2005 - Operator 'And' Is Not Defined For Type 'Color' And Type 'Integer'
Jun 10, 2009Public Pixels(0 To 95, 0 To 127) As Variant Red = Pixels(X, Y) And &HFF i get this code from VB6, and when i transfer to VB05 i got problem said " Operator 'And' is not defined for type 'Color' and type 'Integer'. " i sent to VS2005
Public Pixels(0 To 95, 0 To 127) As Object
Dim red As Object
Red = Pixels(X, Y) And &HFF
[2005] ADO Update Error "the UpdateCommand Affected 0 Of The Expected 1 Records"
Jan 31, 2009[Code]...
I have been looking at the ADO tutorial on this site and am trying to apply it to my own DB. When I run the code above I get this error Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.
Generic TypeOf Operator - See If List Is A List(Of T) Variable - Error: "Type Expected"?
Jan 5, 2011Dim x = GetType(List(Of )) 'valid statement
Dim list As New List(Of String)
Now I want to see if list is a List(Of T) variable: Dim isList = TypeOf list Is List(Of ) On the last line I get a compile error: "Type Expected". Is there any cheap-performance TypeOf operator alternative for generics?
Add An Item To IEnumerable (Of T)?
Sep 11, 2009I see a couple of previously answered questions about adding an item to an IEnumerable in C#, but I'm stuck when trying to implement the proposed solution in VB.NET.
Option Strict On
Dim customers as IEnumerable(Of Customer)
' Return customers from a LINQ query (not shown)
customers = customers.Concat(New Customer with {.Name = "John Smith"})
The above code gives the error:
Option Strict On disallows implicit conversions from Customer to IEnumerable(Of Customer)
How IEnumerable Is Working
Jul 6, 2011IEnumerable interface provides a instance method GetEnumerator that returns IEnumerator type opject .That's okey .But its very hezy to me that how IEnumerable objects are able to work with For Each loop ?When using For Each GetEnumerator method is not called directly from my code .Then from where and how GetEnumerator is called ?Basically my question is that when a class implements IEnumerabel interface then how a distinct behaviour is attached to that class?How it is used with For Each without calling GetEnumerator ?Here is the sample code that i am using :
Public Class Person
Public firstName As String
Public lastName As String
Public Sub New(ByVal firstName As String, ByVal lastName As String)
[code]....
Errors "Expression Expected" And "End Of Statement Expected"
Oct 26, 2010Does anyone know what is wrong with this IF Statement? I'm getting the errors "Expression Expected" and "End of Statement Expected".If DropDownList1.SelectedValue = "Educational Sponsoring" Or "Grants" Or "Product Training" Or "Centres of Excellence" Then
[Code]...
.net - Get Differences That Caused Except To Add An IEnumerable?
Oct 26, 2011i'm using Enumerable.Except to check if a DataTable in memory is in sync with the table in database.
The background is: this DataTable and other frequently used tables are stored in the Cache of a WebApplication. But meanwhile i'm convinced that this is not a good approach because it's a source for nasty errors that are difficult to reproduce/debug.
Therefore i've created a function that checks if database and memory are in sync, otherwise an error-log will be created. This works perfectly. If there is a row in memory that is not in database, this row will be shown below "Difference in database", the same applies in reverse. But if rows exist in both datasources(the PK idRMA) and some values differ, the log will contain this row in two versions(below "Difference in database" and "Difference in database"). It is not easy to see the differences on the first sight.
Q: Is it possible to select only the properties that caused Except to think that first sequence is not in second?
This is the the complete function(the first lines are relevant):
Public Shared Sub CheckRmaMemoryInSyncWithDB()
Dim inSyncText As String
Dim color As Drawing.Color
[Code]......
ASP.NET: Getting All The Page's Control As IEnumerable
Apr 23, 2009I'm trying to use the page control's collection with LINQ. Whereas this works:
dim l = Me.Controls.OfType(Of TextBox).AsQueryable()
the following return an ArgumentExceptionError:
dim l = Me.Controls.AsQueryable()
Change IEnumerable To Datatable?
Dec 30, 2009I used this but did not work :
Dim IENUM As IEnumerable = dat.getDanhSachDongSP
Dim bid as New BindingSource
bid.DataSource = IENUM
Dim dt2 As DataTable
dt2 = bid.DataSource
It show error "cant convert from IEnumberable to datatable"
IEnumerable Extensions Of Sortedlist?
Aug 8, 2011when you use the object browser to see the features of a sortedlist elementat is not shown , but because a sorted list inherets features of ienumerable it works, cant that be corrected
View 1 Replies
