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KeyNotFoundException Class

The exception that is thrown when the key specified for accessing an element in a collection does not match any key in the collection.

System.Object
  System.Exception
    System.SystemException
      System.Collections.Generic.KeyNotFoundException

Namespace:  System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

[ComVisibleAttribute(true)]
public class KeyNotFoundException : SystemException

The KeyNotFoundException type exposes the following members.

  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360KeyNotFoundException()Initializes a new instance of the KeyNotFoundException class using default property values.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360KeyNotFoundException(String)Initializes a new instance of the KeyNotFoundException class with the specified error message.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360KeyNotFoundException(String, Exception)Initializes a new instance of the KeyNotFoundException class with the specified error message and a reference to the inner exception that is the cause of this exception.
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  NameDescription
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360DataGets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
Protected propertySupported by Silverlight for Windows PhoneSupported by Xbox 360HResultGets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360InnerExceptionGets the Exception instance that caused the current exception. (Inherited from Exception.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360MessageGets a message that describes the current exception. (Inherited from Exception.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360StackTraceGets a string representation of the frames on the call stack at the time the current exception was thrown. (Inherited from Exception.)
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  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360Equals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360FinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetBaseExceptionWhen overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetTypeGets the runtime type of the current instance. (Inherited from Exception.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360MemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToStringCreates and returns a string representation of the current exception. (Inherited from Exception.)
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A KeyNotFoundException is thrown when an operation attempts to retrieve an element from a collection using a key that does not exist in that collection.

KeyNotFoundException uses the HRESULT COR_E_KEYNOTFOUND, which has the value 0x80131577.

For a list of initial property values for an instance of the KeyNotFoundException class, see the KeyNotFoundException constructors.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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