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IContentAsyncEtag Property

IT Hit WebDAV Classes Reference
Gets entity tag - string that identifies current state of resource's content.

Namespace:  ITHit.WebDAV.Server
Assembly:  ITHit.Server (in ITHit.Server.dll) Version: 9.1.5311-Beta
Syntax
string Etag { get; }

Property Value

Type: String
Remarks

This property shall return different value if content changes. Typically you will return either file content cheksum or hash or counter which increases with every modification. Change ETag every time a file content is updated in WriteAsync(Stream, String, Int64, Int64) method, together with a modification date. Do NOT change ETag when locking/unlocking a file.

Return null to indicate that server doesn't support ETags. Note that many client applications, including Microsoft Office, require ETag for correct functioning.

More information about ETags could be found here: http://en.wikipedia.org/wiki/HTTP_ETag.

Examples

The code below is part of 'WebDAVServer.FileSystemStorage.AspNet' C# & VB samples provided with the SDK.

public string Etag
{
    get { return string.Format("{0}-{1}", Modified.ToBinary(), this.serialNumber); }
}
See Also