Delegate Function .net : Error Says Expression Expected

Aug 13, 2010

Having problem understanding Delegate error. Error says expression expected, How do I fix?Here is the offending line (#259)....

mylist.ForEach(Delegate Function(P As linkItem) As System.Char[] )

Here is the entire code.

<script language="VB" runat="server">
Function sectionTitle(ByRef f As String)
'Open a file for reading

[code]....

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The Error Is In Last Line On Function "Expression Expected"?

Jan 30, 2012

I have following error in my code,how to remove it from code

Protected Sub addListItems()
Dim now As DateTime = DateTime.Now
Dim past As DateTime = now.AddDays(-20)

[code]....

The error is in last line on function "Expression Expected"

ConvertAll(Function(dt)

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Asp.net - Expression Expected - Getting A Build Error

Feb 22, 2010

Im getting a build error with the following code...

Private Property GridViewSortDirection() As String

Get
Return If(TryCast(ViewState("SortDirection"), String), "ASC")
End Get

[CODE]...

It is happening on the following line...Return If(TryCast(ViewState("SortDirection"), String), "ASC")

Error returns...Error 11 C:inetpubwwwrootTPSupportmainUserControlsgrid.ascx.vb(192): error BC30201: Expression expected.

Its a convert from c#

private string GridViewSortDirection
{
get { return ViewState["SortDirection"] as string ?? "ASC"; }
set { ViewState["SortDirection"] = value; }
}

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.net - StreamWriter - Error BC30201: Expression Expected

Nov 26, 2010

[Code]....

This is the compiler error BC30201: Expression expected. The line that caused it is the Dim sw line.

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Error "Expression Expected: Byal 0&

Apr 26, 2010

I got an error "Expression expected". The error occurred in ThreadID1 = GetWindowThreadProcessId(GetForegroundWindow, ByVal 0&) ThreadID2 = GetWindowThreadProcessId(hWnd, ByVal 0&) I am using vb.net 2008 express.

[Code]...

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Error - Comma, ')',or Valid Expression Continuation Expected

Nov 19, 2010

I need my VB.net to write a file containing the following line

objWriter.WriteLine ("TEXTA " (FILEA) " TEXTB")
Unfortunatly the variable (FILEA) is causing problems i now get the error
Comma, ')', or valid expression continuation expected.

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If Statement (ASP.NET) - Compiler Error Message: BC30201: Expression Expected

Apr 11, 2011

[Code]....

This code is giving an error: Compiler Error Message: BC30201: Expression expected. I just basically want to check if two values are equal but its saying something about expression expected although i've given the expression to evaluate.

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Delegate 'System.Threading.ThreadStart' Requires An 'AddressOf' Expression Or Lambda Expression As The Only Argument To Its Constructor?

Jan 23, 2010

I got this Error. below is my code.

GenerateTheList is function.Need help
Private Sub buttGenerate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttGenerate.Click
Dim thread1 As New Thread(New ThreadStart(GenerateTheList))
thread1.Start()
End Sub

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Error : 'AddressOf' Expression Cannot Be Converted To 'Integer' Because 'Integer' Is Not A Delegate Type?

Aug 11, 2011

I faced an error when upgrading VB6 code to VB.NET. The error occurs at AddressOf WindowProc

AddressOf expression cannot be converted to 'Integer' because 'Integer' is not a delegate type

My declaration for SetWindowLong is:

Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA"(
ByVal hWnd As Integer,
ByVal nIndex As Integer,[code]....

What is the reason for the error I get?

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Asp.net - Global Code Segment In MVC View Giving An Error "Expression Expected"

Sep 6, 2011

I have a View in which I have a code block where I am setting some variables and later on using those variables to show or hide some areas.When I build this website. A compilation error comes up on the line @( stating Syntax Error and another one stating Expression Expected. Can anyone guide me what I am doing wrong here...

[Code]...

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.net - ByRef Underlined With "Expression Expected" Error When Trying To Pass In A Object Of Type List(Of ClsFooDetail)?

Mar 3, 2010

I 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))

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Get A Error" Method 'Private Shared Sub Ping Does Not Have A Signature Compatible With Delegate 'Delegate Sub ?

Jun 1, 2010

Code:
Public Class SendPings
Shared Sub New()
AddHandler Post.Saved, AddressOf Post_Saved[code].....

I get a error" Method 'Private Shared Sub Ping(item As BlogEngine.Core.IPublishable, itemUrl As System.Uri)' does not have a signature compatible with delegate 'Delegate Sub WaitCallback(state As Object)'.

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C# - Solve This Error "Cannot Convert Lambda Expression To Type 'string' Because It Is Not A Delegate Type"

Jun 12, 2010

. I get this error: "Cannot convert lambda expression to type 'string' because it is not a delegate type" - keyword select become underlined in blue

[Code]...

Above code should displays drop list of employees first name and last name in a combo box

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VB Lambda Expression For Sub Delegate?

Nov 29, 2010

There is the code:

Private Sub InsertItemInCache(Of T)(ByVal item As CachedItem(Of T), ByVal dependency As AggregateCacheDependency, _
ByVal key As String, ByVal updateCallBack As CacheItemUpdateCallback)

[code].....

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Lamba Expression Cannot Be Used As Expected?

Dec 23, 2011

The following code produces the compiler error "Expression expected" (Sub is underlined).

Dim lambda As Action(Of Integer) = Sub(x) Console.WriteLine(x)

Why does this not work?

Note: The corresponding C# code works:

Action<int> lambda = x => Console.WriteLine(x);

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Creating A Lambda Expression With Delegate?

Jul 16, 2010

I am Creating a Lambda Expression, but it' not getting me the write Out put :

Public Class Form1
Delegate Function GetLastChar(ByVal S As String) As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[code]....

I want Send a Name like "Arindam" and its return me "m", the last character.but in messagbox return value shows "fasle" I can't under stand why it's showing "False" instead of "m", the last character.

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Delegate Not Working Instead Of Lambda Expression

May 14, 2010

I am having a generic ListOf-collection holding the self-created User-object, I can filter for users by using lambda-expression like this:
Dim reviewers As List(Of User) = users.Where(Function(u) u.DvRoleID = 2).ToList

Instead of using the lambda expression I can also write the function and call it as argument like this:
Public Function GetReviewer1(ByVal u As User) As Boolean
If u.DvRoleID = 2 Then
Return True
[Code] .....

Now the question: why can't I create a delegate having the same signature as the GetReviewer1 function and use the delegate as argument inside the where-clause like this:
Delegate Function Criteria(ByVal u As User) As Boolean
Public Function GetReviewer1(ByVal u As User) As Boolean
If u.DvRoleID = 2 Then
[Code] .....
The compiler does not accept the crit delegate as argument.

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.NET XML Literal Expression Expected With Linq To XML?

Jun 9, 2010

I have the same problem as stated in this question, but the accepted solution there was a "works on my machine" answer.

[Code]...

And I receive the error: BC30201: Expression expected.

Does anyone have a more detailed idea of what could cause this?

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Expression Expected In Immediated Window

Aug 12, 2009

?Console.WriteLine(DateDiff(DateInterval.Day,Today,'08/10/2009'))

Why,Expression expected in immediated window

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Getting A Blue Squiggly For Expression Expected?

Sep 19, 2009

Dim Randomizer As Integer
Randomizer = Int(Rnd() * 51) + 1
If Randomizer = 1 Then
picCard1.Image = Image.FromFile("Picture Filepath") And
TheCount += 1
End If

On the d of the And I'm getting a blue squiggly for Expression expected.

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Comma / ')' Or A Valid Expression Contiuation Expected

Jul 28, 2011

I have an error in this section:' convert the hours, pay rate, and allowances to numbers [code] It underlines the 1stHours and 1stRate with an error of "Comma, ')' or a valid expression contiuation expected. I'm not quite sure what this code means. [code]

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ErrorComma, ')', Or A Valid Expression Continuation Expected

Jun 19, 2011

ErrorComma, ')', or a valid expression continuation expected.

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Sql Query Throws Exception - Expression Expected

May 27, 2011

i am trying to develop a simple app to automate binding of data from access db for filling a form in a sequential order vb 2008 express. an error keeps coming up 'expression expected' on an sql query in the code i wrote. the code is shown below:

Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e

[code]....

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Create Expression Where Delegate Type Is Unknown At Compile Time?

Sep 21, 2011

I have a code below to make collection that bind to a gridview able to sort by clicking on the column header. The problem here is "IPerson" is unknown at compile time. I want the delegate type able to decide by getting from gridview datasource.[code]....

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Error : "You Have Tried To Execute A Query That Does Not Include The Spec Ified Expression 'ID' As A Part Of The Aggregate Function

Jul 1, 2009

I am working on an application in Visual Basic Express using an Access 2000 database.I am trying to get athe following SQL query to work but get an error in Access.

The query is:

SELECT [ID], [Title], [Author], [Series], [YearPublished], [ISBN], [CoverPrice], [Style], [Condition], [Signed], [Comments], Count([Title]) AS CountOfBooks, Sum([CoverPrice]) AS TotalCoverPrice
FROM tblBooks
WHERE ID=[@ID];

The error is:"You have tried to execute a query that does not include the spec ified expression 'ID' as a part of the aggragate function."

The query works fine without the 'Count' and 'CoverPrice' count and sum to the query.

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Datasource - An Expression Of Non-boolean Type Specified In A Context Where A Condition Is Expected - Near ')'

Jun 24, 2011

I 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]...

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VS 2008 Error1 Comma, ')', Or A Valid Expression Continuation Expected

Jul 15, 2009

I get this error at the second dot of the IP address specified in my connection string.

Error1Comma, ')', or a valid expression continuation expected.

The code is as follows:

Option Strict Off
Option Explicit On
Imports System.Data
Imports System.Data.SqlClient

[code].....

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Is A Delegate Type And Requires A Single 'addressof' Expression As The Only Argument To The Constructor

May 10, 2010

I got 2 classes in a form, and I would like to pass a value from a textbox to the other class, so I decided to use Deligate.

Below is the code.

Public Delegate Sub delPassSize(ByVal text As TextBox)
'To get size from Class Calculate(Class 2)
Public Sub GetSize(ByVal txtForm1 As TextBox)

[code]....

and the error message is 'cls.Getsize is a delegate type and requires a single 'addressof' expression as the only argument to the constructor.'

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Errors "Expression Expected" And "End Of Statement Expected"

Oct 26, 2010

Does 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]...

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DataColumn.Expression: How To Use A User Defined Function In Expression

Oct 12, 2010

I am trying to write following expression on a datacolumn. But it results in error:Replicate('*', nLevel) + NameWhere: Replicate() is a user defined function (in a module). nLevel and Name are two other columns in same data table.

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