如何使用DropNet检查DropBox中是否存在文件夹

Question

I'm programming an app that interact with dropbox by use DropNet API. I want to check if the folder is exist or not on dropbox in order to I will create one and upload file on it after that. Everything seen fine but if my folder is exist it throw exception. Like this:

if (isAccessToken)
{
    byte[] bytes = File.ReadAllBytes(fileName);
    try
    {
        string dropboxFolder = "/Public/DropboxManagement/Logs" + folder;

        // I want to check if the dropboxFolder is exist here

        _client.CreateFolder(dropboxFolder); 

        var upload = _client.UploadFile(dropboxFolder, fileName, bytes);
    }
    catch (DropNet.Exceptions.DropboxException ex) {
        MessageBox.Show(ex.Response.Content);
    }
}

Answer 1

I'm not familiar with dropnet, but looking at the source code, it appears you should be able to do this by using the GetMetaData() method off of your _client object. This method returns a MetaData object.

Example:

//gets contents at requested path
var metaData = _client.GetMetaData("/Public/DropboxManagement/Logs");
//without knowing how this API works, Path may be a full path and therefore need to check for "/Public/DropboxManagement/Logs" + folder
if (metaData.Contents.Any(c => c.Is_Dir && c.Path == folder)
{
     //folder exists
}