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PreconditionFailedException Class

IT Hit WebDAV Classes Reference
Precondition failed.
Inheritance Hierarchy

Namespace:  ITHit.WebDAV.Client.Exceptions
Assemblies:   ITHit.WebDAV.Client (in ITHit.WebDAV.Client.dll) Version: 2.0.420.0
  ITHit.WebDAV.Client (in ITHit.WebDAV.Client.dll) Version: 2.0.420.0
Syntax
[SerializableAttribute]
public sealed class PreconditionFailedException : WebDavHttpException

The PreconditionFailedException type exposes the following members.

Constructors
  NameDescription
Public methodPreconditionFailedException(String, Uri, IMultistatusAsync, Exception)
Initializes a new instance of the PreconditionFailedException class with a specified error message, a reference to the inner exception that is the cause of this exception, href of the item and multistatus response with error details.
Public methodPreconditionFailedException(String, Uri, IMultistatus, Exception)
Initializes a new instance of the PreconditionFailedException class with a specified error message, a reference to the inner exception that is the cause of this exception, href of the item and multistatus response with error details.
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Properties
  NameDescription
Public propertyData
Gets a collection of key/value pairs that provide additional user-defined information about the exception.
(Inherited from Exception.)
Public propertyHelpLink
Gets or sets a link to the help file associated with this exception.
(Inherited from Exception.)
Public propertyHResult
Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.
(Inherited from Exception.)
Public propertyInnerException
Gets the Exception instance that caused the current exception.
(Inherited from Exception.)
Public propertyMessage
Gets a message that describes the current exception.
(Inherited from Exception.)
Public propertySource
Gets or sets the name of the application or the object that causes the error.
(Inherited from Exception.)
Public propertyStackTrace
Gets a string representation of the immediate frames on the call stack.
(Inherited from Exception.)
Public propertyTargetSite
Gets the method that throws the current exception.
(Inherited from Exception.)
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Methods
  NameDescription
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Public methodGetBaseException
When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.
(Inherited from Exception.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetObjectData
When overridden in a derived class, sets the SerializationInfo with information about the exception.
(Inherited from Exception.)
Public methodGetType
Gets the runtime type of the current instance.
(Inherited from Exception.)
Public methodToString
Creates and returns a string representation of the current exception.
(Inherited from Exception.)
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Fields
  NameDescription
Public fieldMultistatus
Contains IMultistatus with elements that had errors, if multistatus information was available in response.
(Inherited from WebDavHttpException.)
Public fieldStatus
Http status with wich request failed.
(Inherited from WebDavHttpException.)
Public fieldUri
Uri for which request failed.
(Inherited from WebDavHttpException.)
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Remarks
Thrown when server responded with 412 (Precondition Failed) http response. The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server. This response code allows the client to place preconditions on the current resource metainformation (header field data) and thus prevent the requested method from being applied to a resource other than the one intended.
Examples
IFolder itemSrc = session.OpenFolder(new Uri("http://server:8080/Library/"));
IFolder itemDst = session.OpenFolder(new Uri("http://server:8080/Sales/"));
try
{
    itemSrc.MoveTo(itemDst, itemSrc.DisplayName, false);
}
catch (PreconditionFailedException)
{
    Console.WriteLine("The destination item exists and 'overwrite' was 'false'.");
}
catch (WebDavHttpException ex)
{
    Console.WriteLine(ex.Message + " " + ex.Status.Code + " " + ex.Status.Description);
    foreach (IMultistatusResponse resp in ex.Multistatus.Responses)
    { // Find which items failed to move.
        Console.WriteLine(resp.Href + " " + resp.Status.Code + " " + resp.Status.Description);
    }
}
See Also