How to get latest revision number using SharpSVN?
The least expensive way to retrieve the head revision from a repository is the Info command.
using(SvnClient client = new SvnClient())
{
SvnInfoEventArgs info;
Uri repos = new Uri("http://my.server/svn/repos");
client.GetInfo(repos, out info);
Console.WriteLine(string.Format("The last revision of {0} is {1}", repos, info.Revision));
}