Powershell Provider - GetItem Path Error - Custom File as Drive

Question

I'm trying to emulate my custom project file as new PS Drive. I am trying to create my custom Powershell Provider that is derived from NavigationCmdletProvider. I have overridden PSDriveInfo to read and contain the project from the file and filepath is in the root of PSDriveInfo.

I can't override GetItem properly. What I want to do is use GetNamesFromPath(path, out tableName, out rowNumber) method. Since my custom project is basically dataset, I would like to use tableName to get the DataTable and rowNumber for ID of DataRow.

The problem is that I get the "path doesn't exist" kind of error. It doesn't event get into the overridden method. Am I missing something to override? The filepath doesn't exist really, but I simply need to handle the path and use WriteItemObject with what I want as object(s) returned, without checking is it valid path.

Edit 1: One thing I noticed is that it never gets into GetItem and therefore into IsValidPath. When I debug and use breakpoints, first I load the drive and then Set-Location to the drive, IsItemContainer is called (it has to be overridden for Set-Location to work).

GetItem and IsValidPath are not called at all, as if it checks for valid path before calling overridden method. Can NavigationCmdletProvider work with non-existing paths (except for the file itself), just work with strings that will manually be handled as paths would?

Answer 1

Make sure you override the IsValidPath and ItemExists methods:

protected override bool IsValidPath(string path)
{
    return true;
}

protected override bool ItemExists(string path)
{
  return true;
}