Hi Sion,

Resources store capacities as a combination of the ID of the capacity profile parameter, and the configured max value. So in order to retrieve the configured max bandwidth on each resource, you first need to know the ID of the bandwidth parameter. The easiest way to do this is to retrieve the bandwidth profile parameter by name. See the code below:

var profileHelper = new ProfileHelper(gqiDms.SendMessages);

var rmHelper = new ResourceManagerHelper(gqiDms.SendMessage);

// You need to import the 'Skyline.DataMiner.Net.Messages.SLDataGateway' namespace for the filter.
var parameterFilter = ParameterExposers.Name.Equal("Bandwidth");

var parameter = profileHelper.ProfileParameters.Read(parameterFilter).FirstOrDefault();

if (parameter == null)
{
    // There is no parameter with name 'Bandwidth'
   ...
}

// Retrieve the resources, see the docs page you linked for examples on how to construct filters or on how to use paging.
var resources = rmHelper.GetResources(...);

foreach (var oneResource in resources)
{
    var bandWidthCapacity = oneResource.Capacities.FirstOrDefault(c => c.CapacityProfileID == parameter.ID);
    if (bandWidthCapacity != null)
    {
        var maxBandwidthOnResource = bandWidthCapacity.Value.MaxDecimalQuantity;
    }
}

Note that if you want to know the amount of bandwidth that is left instead of the configured max bandwidth, you can do so with a 'GetEligibleResources' call instead, of which there is also an example in the docs.