Azure CloudFile UploadFromFile "The specified resource name contains invalid characters" - azure

Question

I am trying to upload a file, I get an exception "The specified resource name contains invalid characters".
The path I am using is #"C:\Test\Test.txt". When I change to relative addressing (i.e., #".\Test.txt") and have the file in the exe folder, it will work.
What I need to know is relative addressing the only option to upload a file to Azure File Storage from a .NET client? Is there a way to reference a file with a full path and upload to File Storage?
Update: Based on the comments and answer below, I realized my mistake: I was supplying the incoming file path to the GetFileReference method, where this should be the name of the new file in Azure, hence it contained the ':' which was invalid. Comments are right, I should have provided code, may have been diagnosed easier.
public static async Task WriteFileToStorage(string filePath)
{
CloudFileShare fileShare = GetCloudFileShare();
CloudFileDirectory fileDirectory = fileShare.GetRootDirectoryReference();
CloudFile cloudFile = fileDirectory.GetFileReference(filePath);
await cloudFile.UploadFromFileAsync(filePath);
}

Answer 1

.Net client does support the full path when upload to azure file storage.
You'd better provide the complete code you're using including the file name / path in local and azure file storage.
Here is the code I test with, and it works.(and I'm using the package WindowsAzure.Storage, version 9.3.3 ):
static void Main(string[] args)
{
CloudStorageAccount storageAccount = new CloudStorageAccount(new StorageCredentials("account_name", "account_key"), true);
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();
CloudFileShare fileShare = fileClient.GetShareReference("test");
CloudFileDirectory rootDir = fileShare.GetRootDirectoryReference();
CloudFile myfile = rootDir.GetFileReference("mytest.txt");
//the full file path on local
myfile.UploadFromFile(#"C:\Test\Test.txt");
}