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

MSDN Library
Development Tools and Languages
Visual Studio 2008
Visual Studio
Visual Basic
Reference (Visual Basic)
Visual Basic Reference
Error Messages (Visual Basic)
Visual Basic Compiler Messages

'-' expected
'!' requires its left operand to have a type parameter, class or interface type, but this operand has the type '<type>'
'#Else' must be preceded by a matching '#If' or '#ElseIf'
'#ElseIf' cannot follow '#Else' as part of an '#If' block
'#ElseIf' must be preceded by a matching '#If' or '#ElseIf'
'#ElseIf', '#Else', or '#End If' must be preceded by a matching '#If'
'#End ExternalSource' must be preceded by a matching '#ExternalSource'
'#End Region' must be preceded by a matching '#Region'
'#ExternalSource' directives cannot be nested
'#ExternalSource' statement must end with a matching '#End ExternalSource'
'#If' block must end with a matching '#End If'
'#Region' and '#End Region' statements are not valid within method bodies
'#Region' statement must end with a matching '#End Region'
'(' expected
'(' unexpected
')' expected
'.' expected
':' is not allowed
'{' expected
'}' expected
'<argumentname>' is not a parameter of '<methoddeclaration>'
'<assemblyname>' is an assembly and cannot be referenced as a module
'<attribute>' cannot be applied because the format of the GUID '<number>' is not correct
'<attributename>' cannot be applied more than once to an assembly
'<baseinterfacename>.<membername>' from 'implements <derivedinterfacename>' is already implemented by the base class '<baseclassname>'. Re-implementation of <type> assumed
'<classname>' is not CLS-compliant because it derives from '<baseclassname>', which is not CLS-compliant
'<classname>' is not CLS-compliant because the interface '<interfacename>' it implements is not CLS-compliant
'<classname1>' cannot inherit from <type> '<classname2>' because '<classname2>' is declared 'NotInheritable'
'<constructor>' in designer-generated type '<type>' should call InitializeComponent method
'<declaration1>' cannot override '<declaration2>' because it is declared 'NotOverridable'
'<declaration1>' cannot override '<declaration2>' because it is declared 'Shared'
'<declaration1>' cannot override '<declaration2>' because they have different access levels
'<derivedtypename>' cannot inherit from <type> '<constructedbasetypename>' because it expands the access of type '<internaltypename>' outside the assembly
'<derivedtypename>' cannot inherit from <type> '<constructedbasetypename>' because it expands the access of type '<internaltypename>' to <region> '<regionname>'
'<elementname>' cannot be declared 'Partial' because partial methods must be Subs
'<elementname>' for the Imports alias to '<qualifiedelementname>' does not refer to a Namespace, Class, Structure, Interface, Enum or Module
'<elementname>' is ambiguous because multiple kinds of members with this name exist in <type> '<typename>'
'<elementname>' is not a method parameter
'<elementname>' is not a parameter of extension method '<methodname>' defined in '<typename>'
'<elementname>' is obsolete (Visual Basic Error)
'<elementname>' is obsolete (Visual Basic Warning)
'<elementname>' is obsolete: '<errormessage>'
'<elementname>' refers to type '<typename>' in project '<projectname>', but type '<typename>' was not found in project '<projectname>'
'<emptyconstant>' is not declared
<error>: '<classname1>' inherits from '<classname2>'
<error>: '<constructorname1>' calls '<constructorname2>'
<error>: '<structurename1>' contains '<structurename2>'
'<eventname>' implicitly defines '<membername>', which conflicts with a member implicitly declated in <type> '<typename>'
'<eventname>' is an event, and cannot be called directly
'<eventname>' is not an event of '<containername>'
'<expression>' cannot be used as a type constraint
'<filename>' cannot be referenced because it is not an assembly
'<function>' is not declared
'<functionname>' is not declared (Smart Device/Visual Basic Compiler Error)
'<functionname>' is not declared (Visual Basic Error)
'<implementsclause>' cannot implement '<typename>' because '<typename>' is a reserved name
'<interfacename>.<membername>' is already implemented by the base class '<baseclassname>'. Re-implementation of <type> assumed
'<interfacename1>' cannot implement '<methodname>' because there is no matching <method> on interface '<interfacename2>'
'<keyword>' accessor of '<propertyname>' is obsolete (Visual Basic Error)
'<keyword>' accessor of '<propertyname>' is obsolete (Visual Basic Warning)
'<keyword>' accessor of '<propertyname>' is obsolete: '<errormessage>' (Visual Basic Error)
'<keyword>' accessor of '<propertyname>' is obsolete: '<errormessage>' (Visual Basic Warning)
'<keyword>' is not valid within a Module
'<keyword>' is not valid within a structure
'<keyword>' is valid only within a class
'<keyword>' is valid only within an instance method
'<lsetstmt>' is not declared
'<mathfunction1>' is not declared
'<member>' conflicts with the reserved member by this name that is implicitly declared in all enums
'<member>' is already declared in this structure
'<member>', implicitly defined for '<eventname>', cannot shadow a 'MustOverride' method in the base <class> '<classname>'
'<membername>' cannot be declared 'Shadows' outside of a class, structure, or interface
'<membername>' cannot expose type '<typename>' outside the project through <containertype> '<containertypename>'
'<membername>' cannot implement '<interfacename>.<interfacemembername>' because they differ by type parameter constraints
'<membername>' exists in multiple base interfaces
'<membername> has the same name as a type parameter
'<membername>' is already declared by '<procedurename>', which was generated for this <containername>
'<membername>' is ambiguous across the inherited interfaces '<interfacename1>' and '<interfacename2>'
'<membername>' is not a member of '<contextname>'; it does not exist in the current context
'<membername>' is not declared
'<membername>' is not declared or the module containing it is not loaded in the debugging session
'<membername>' is obsolete: '<errormessage>'
'<membername1>' and '<membername2>' cannot overload each other because they differ only by the types of optional parameters
'<membername1>' cannot override '<membername2>' because they differ by the types of optional parameters
<message> This error could also be due to mixing a file reference to '<filename1>' in project '<projectname1>' with a file reference to '<filename2>' in project '<projectname2>'
<message> This error could also be due to mixing a file reference with a project reference to assembly '<assemblyname>'
<method> '<methodname1>' must be declared 'Overloads' because another '<methodname2>' is declared 'Overloads'
'<method>' is not accessible in this context because it is '<modifier>'
'<method1>' and '<method2>' cannot overload each other because they differ only by optional parameters
'<method1>' and '<method2>' cannot overload each other because they differ only by parameters declared 'ByRef' or 'ByVal'
'<method1>' and '<method2>' cannot overload each other because they differ only by parameters declared 'ParamArray'
'<method1>' and '<method2>' cannot overload each other because they differ only by return types
'<method1>' and '<method2>' cannot overload each other because they differ only by the default values of optional parameters
'<method1>' cannot override '<method2>' because it expands the access of the base method
'<method1>' cannot override '<method2>' because it is a 'Declare' statement
'<method1>' cannot override '<method2>' because they differ by a parameter that is marked as 'ByRef' versus 'ByVal'
'<method1>' cannot override '<method2>' because they differ by optional parameters
'<method1>' cannot override '<method2>' because they differ by the default values of optional parameters
'<method1>' cannot override '<method2>' because they differ by their return types
<methodname>' and '<methodname>' cannot overload each because they differ by 'ReadOnly' or 'WriteOnly'
'<methodname>' cannot be implemented more than once
'<methodname>' cannot override a method that has been shadowed
'<methodname>' cannot shadow a method declared 'MustOverride'
'<methodname>' has multiple definitions with identical signatures
'<methodname>' is not accessible in this context because the return type is not accessible
'<modifier>' is not valid on a Declare
'<modifier>' is not valid on a Delegate declaration
'<modifier>' is not valid on a local constant declaration
'<modifier>' is not valid on a local variable declaration
'<modifier>' is not valid on a method declaration
'<modifier>' is not valid on an event declaration
'<modifier>' is not valid on an Interface declaration
'<modulename>' is a module and cannot be referenced as an assembly
'<name>' cannot be named as a parameter in an attribute specifier because it is not a field or property
'<name>' cannot expose the underlying delegate type '<delegatetype>' of the event it is implementing outside the project through <specifier> '<type>'
'<name>' cannot expose the underlying delegate type '<delegatetype>' of the event it is implementing to <specifier1> '<type1>' through <specifier2> '<type2>'
'<name>' cannot expose type '<type>' used in the underlying delegate type '<delegatetype>' of the event it is implementing to <specifier1> '<type1>' through <specifier2> '<type2>'
'<name>' cannot expose type <type1> in <specifier> <type2> '<typename>' through <name>
'<name>' cannot expose type '<type1>' used in the underlying delegate type '<delegatetype>' of the event it is implementing outside the project through <specifier> '<type2>'
'<name>' cannot refer to itself through its default instance, use 'Me' instead
'<name>' is already declared as '<declaration>' in this <declarationspace>
'<name>' is already declared as a parameter of this method
'<name>' is ambiguous between declarations in Modules '<modulename1>' and '<modulename2>'
'<name>' is ambiguous in the application objects '<list>'

'' is ambiguous in the namespace ''
This page is specific to:.NET Framework Version:2.0 3.03.54.0

Visual Basic Reference: Error Messages

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

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.

Concepts

Namespaces in Visual Basic

Reference

Namespace Statement