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Visual Studio 2010

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Visual Basic and Visual C#

Visual Basic

Visual Basic Reference

Visual Basic Language Reference

Error Messages (Visual Basic)

'#ElseIf' must be preceded by a matching '#If' or '#ElseIf'

'#Region' and '#End Region' statements are not valid within method bodies/multiline lambdas

'<attribute>' cannot be applied because the format of the GUID '<number>' is not correct

'<classname>' is not CLS-compliant because the interface '<interfacename>' it implements is not CLS-compliant

'<elementname>' is obsolete (Visual Basic Warning)

'<eventname>' is an event, and cannot be called directly

'<expression>' cannot be used as a type constraint

'<functionname>' is not declared (Smart Device/Visual Basic Compiler Error)

'<interfacename>.<membername>' is already implemented by the base class '<baseclassname>'. Re-implementation of <type> assumed

'<keyword>' is valid only within an instance method

'<membername>' cannot expose type '<typename>' outside the project through <containertype> '<containertypename>'

'<membername>' is ambiguous across the inherited interfaces '<interfacename1>' and '<interfacename2>'

<message> This error could also be due to mixing a file reference with a project reference to assembly '<assemblyname>'

'<methodname>' has multiple definitions with identical signatures

'<name>' is ambiguous in the namespace '<namespacename>'

'<name1>' is ambiguous, imported from the namespaces or types '<name2>'

<proceduresignature1> is not CLS-compliant because it overloads <proceduresignature2> which differs from it only by array of array parameter types or by the rank of the array parameter types

<type1>'<typename>' must implement '<membername>' for interface '<interfacename>'

<type1>'<typename>' must implement '<methodname>' for interface '<interfacename>'

'<typename>' cannot inherit from <type> '<basetypename>' because it expands the access of the base <type> outside the assembly

'<typename>' is a delegate type

'<typename>' is a type and cannot be used as an expression

A double quote is not a valid comment token for delimited fields where EscapeQuote is set to True

A property or method call cannot include a reference to a private object, either as an argument or as a return value

A reference was created to embedded interop assembly '<assembly1>' because of an indirect reference to that assembly from assembly '<assembly2>'

A startup form has not been specified

Access of shared member through an instance; qualifying expression will not be evaluated

'AddressOf' operand must be the name of a method (without parentheses)

An unexpected error has occurred because an operating system resource required for single instance startup cannot be acquired

Anonymous type member name can be inferred only from a simple or qualified name with no arguments

Argument not optional (Visual Basic)

Array bounds cannot appear in type specifiers

Array declared as for loop control variable cannot be declared with an initial size

Array subscript expression missing

Arrays declared as structure members cannot be declared with an initial size

'As Any' is not supported in 'Declare' statements

Attribute '<attributename>' cannot be applied multiple times

Automation error

Bad checksum value, non hex digits or odd number of hex digits

Bad DLL calling convention

Bad file mode

Bad file name or number

Bad record length

Cannot convert anonymous type to expression tree because it contains a field that is used in the initialization of another field

Cannot create ActiveX Component

Cannot refer to '<name>' because it is a member of the value-typed field '<name>' of class '<classname>' which has 'System.MarshalByRefObject' as a base class

Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class

Can't create necessary temporary file

Can't open '<filename>' for writing

Class '<classname>' cannot be found

Class does not support Automation or does not support expected interface

'Class' statement must end with a matching 'End Class'

Clipboard format is not valid

Constant expression not representable in type '<typename>'

Constants must be of an intrinsic or enumerated type, not a class, structure, type parameter, or array type

Constructor '<name>' cannot call itself

Copying the value of 'ByRef' parameter '<parametername>' back to the matching argument narrows from type '<typename1>' to type '<typename2>'

'Custom' modifier is not valid on events declared without explicit delegate types

Data type(s) of the type parameter(s) cannot be inferred from these arguments

Declaration expected

Default property '<propertyname1>' conflicts with default property '<propertyname2>' in '<classname>' and so should be declared 'Shadows'

Default property access is ambiguous between the inherited interface members '<defaultpropertyname>' of interface '<interfacename1>' and '<defaultpropertyname>' of interface '<interfacename2>'

Delegate class '<classname>' has no Invoke method, so an expression of this type cannot be the target of a method call

Derived classes cannot raise base class events

Device I/O error

'Dir' function must first be called with a 'PathName' argument

End of statement expected

Error creating assembly manifest: <error message>

Error creating Win32 resources: <error message>

Error in loading DLL (Visual Basic)

Error saving temporary Win32 resource file '<filename>': <error message>

Errors occurred while compiling the XML schemas in the project

Evaluation of expression or statement timed out

Event '<eventname1>' cannot implement event '<eventname2>' on interface '<interface>' because their delegate types '<delegate1>' and '<delegate2>' do not match

Events cannot be declared with a delegate type that has a return type

Events of shared WithEvents variables cannot be handled by non-shared methods

Expression does not produce a value

Expression has the type '<typename>' which is a restricted type and cannot be used to access members inherited from 'Object' or 'ValueType'

Expression is a value and therefore cannot be the target of an assignment

Expression of type <type> is not queryable

Expression recursively calls the containing property '<propertyname>'

Expression too complex

'Extension' attribute can be applied only to 'Module', 'Sub', or 'Function' declarations

File already open

File is too large to read into a byte array

File name or class name not found during Automation operation (Visual Basic)

File not found (Visual Basic Run-Time Error)

First operand in a binary 'If' expression must be nullable or a reference type

First statement of this 'Sub New' must be a call to 'MyBase.New' or 'MyClass.New' (No Accessible Constructor Without Parameters)

First statement of this 'Sub New' must be an explicit call to 'MyBase.New' or 'MyClass.New' because the '<constructorname>' in the base class '<baseclassname>' of '<derivedclassname>' is marked obsolete: '<errormessage>'

'For Each' on type '<typename>' is ambiguous because the type implements multiple instantiations of 'System.Collections.Generic.IEnumerable(Of T)'

Friend assembly reference <reference> is invalid

Function '<procedurename>' doesn't return a value on all code paths

Function evaluation is disabled because a previous function evaluation timed out

Generic parameters used as optional parameter types must be class constrained

'Get' accessor of property '<propertyname>' is not accessible

Handles clause requires a WithEvents variable defined in the containing type or one of its base types

Identifier expected

Identifier is too long

Initializer expected

Input past end of file

Internal error happened at <location>

Implicit conversion from '<typename1>' to '<typename2>' in copying the value of 'ByRef' parameter '<parametername>' back to the matching argument.

'Is' requires operands that have reference types, but this operand has the value type '<typename>'

'IsNot' operand of type 'typename' can only be compared to 'Nothing', because 'typename' is a nullable type

Labels that are numbers must be followed by colons

Lambda expression will not be removed from this event handler

Lambda expressions are not valid in the first expression of a 'Select Case' statement

Late bound resolution; runtime errors could occur

Latebound overload resolution cannot be applied to '<procedurename>' because the accessing instance is an interface type

Leading '.' or '!' can only appear inside a 'With' statement

Line is too long

'Line' statements are no longer supported (Visual Basic Compiler Error)

Method does not have a signature compatible with the delegate

Methods of 'System.Nullable(Of T)' cannot be used as operands of the 'AddressOf' operator

'Module' statements can occur only at file or namespace level

Name <membername> is not CLS-compliant

Name '<name>' is not declared

Name <namespacename> in the root namespace <fullnamespacename> is not CLS-compliant

Namespace or type specified in the Imports '<qualifiedelementname>' doesn't contain any public member or cannot be found

Namespace or type specified in the project-level Imports '<qualifiedelementname>' doesn't contain any public member or cannot be found

Need property array index

Nested function does not have a signature that is compatible with delegate '<delegatename>'

No accessible 'Main' method with an appropriate signature was found in '<name>'

Non-CLS-compliant <membername> is not allowed in a CLS-compliant interface

Nullable type inference is not supported in this context

Number of indices exceeds the number of dimensions of the indexed array

Object or class does not support the set of events

Object required (Visual Basic)

Object variable or With block variable not set

Operator declaration must be one of: +,-,*,\,/,^, &, Like, Mod, And, Or, Xor, Not, <<, >>, =, <>, <, <=, >, >=, CType, IsTrue, IsFalse

'Optional' expected

Optional parameters must specify a default value

Ordinal is not valid

Out of memory (Visual Basic Compiler Error)

Out of stack space (Visual Basic)

Out of string space (Visual Basic)

Overflow (Visual Basic Error)

Overflow (Visual Basic Run-Time Error)

Path not found

Path/File access error

Permission denied (Visual Basic)

Procedure call or argument is not valid (Visual Basic)

Property '<propertyname>' doesn't return a value on all code paths

Property array index is not valid

Property let procedure not defined and property get procedure did not return an object

Property not found

Property or method not found

Range variable <variable> hides a variable in an enclosing block, a previously defined range variable, or an implicitly declared variable in a query expression

Range variable name can be inferred only from a simple or qualified name with no arguments

Reference required to assembly '<assemblyidentity>' containing type '<typename>', but a suitable reference could not be found due to ambiguity between projects '<projectname1>' and '<projectname2>'

Reference required to assembly '<assemblyname>' containing the base class '<classname>'

Resume without error

Return type of function '<procedurename>' is not CLS-compliant

'Set' accessor of property '<propertyname>' is not accessible

Some subkeys cannot be deleted

Statement cannot end a block outside of a line 'If' statement

Statement is not valid in a namespace

Statement is not valid inside a method/multiline lambda

String constants must end with a double quote

Structure '<structurename>' must contain at least one instance member variable or at least one instance event declaration not marked 'Custom'

'Sub Main' was not found in '<name>'

Sub or Function not defined (Visual Basic)

Subscript out of range (Visual Basic)

TextFieldParser is unable to complete the read operation because maximum buffer size has been exceeded

The type for variable '<variablename>' will not be inferred because it is bound to a field in an enclosing scope

This array is fixed or temporarily locked (Visual Basic)

This key is already associated with an element of this collection

Too many files

Type '<typename>' has no constructors

Type <typename> is not CLS-compliant

Type '<typename>' is not defined

Type arguments could not be inferred from the delegate

Type mismatch (Visual Basic)

Type of '<variablename>' cannot be inferred because the loop bounds and the step variable do not widen to the same type

Type of member '<membername>' is not CLS-compliant

Type of optional value for optional parameter <parametername> is not CLS-compliant

Type of parameter '<parametername>' is not CLS-compliant

Type parameters cannot be used as qualifiers

Unable to create strong-named assembly from key file '<filename>': <error>

Unable to embed resource file '<filename>': <error message>

Unable to emit assembly: <error message>

Unable to find required file '<filename>'

Unable to get serial port names because of an internal system error

Unable to link to resource file '<filename>': <error message>

Unable to load information for class '<classname>'

Unable to write output to memory

Unable to write temporary file because temporary path is not available

Unable to write to output file '<filename>': <error>

Underlying type <typename> of Enum is not CLS-compliant

Using the iteration variable in a lambda expression may have unexpected results

Value of type '<typename1>' cannot be converted to '<typename2>'

Value of type '<typename1>' cannot be converted to '<typename2>' (Multiple file references)

Value of type 'type1' cannot be converted to 'type2'

Variable '<variablename>' hides a variable in an enclosing block

Variable '<variablename>' is used before it has been assigned a value

Variable uses an Automation type not supported in Visual Basic

XML axis properties do not support late binding

XML comment exception must have a 'cref' attribute

XML entity references are not supported

XML literals and XML properties are not supported in embedded code within ASP.NET

XML namespace URI 'http://www.w3.org/XML/1998/namespace' can be bound only to 'xmlns'

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'<name>' is ambiguous in the namespace '<namespacename>'

Visual Studio 2010

You have provided a name that is ambiguous and therefore conflicts with another name. The Visual Basic compiler does not have any conflict resolution rules; you must disambiguate names yourself.

Error ID: BC30560

To correct this error

Fully qualify the name.

Reference

Namespace Statement

Concepts

Namespaces in Visual Basic

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