public static object Convert(object value, Dynamics365Entity entity, string attributeLogicalName, Dynamics365Connection connection, string targetEntityLogicalName)
{
object convertedValue = default(object);
EntityMetadata entityMetadata = entity.GetEntityMetadata(connection);
AttributeMetadata attributeMetadata = entityMetadata.Attributes.FirstOrDefault(findField => findField.LogicalName == attributeLogicalName);
Dynamics365TypeConverter converter = new Dynamics365TypeConverter(attributeMetadata, targetEntityLogicalName);
Type destinationType = converter.Dynamics365Type;
if (converter.CanConvertTo(destinationType))
{
try
{
convertedValue = converter.ConvertTo(value, destinationType);
}
catch (Exception ex)
{
throw new ArgumentException(string.Format("Cannot convert {0} '{1}' to {2}: {3}", attributeMetadata.DisplayName.UserLocalizedLabel.Label, value, destinationType.Name, ex.Message), ex);
}
}
else
{
throw new ArgumentException(string.Format("Cannot convert {0} '{1}' to {2}.", attributeMetadata.DisplayName.UserLocalizedLabel.Label, value, destinationType.Name));
}
return(convertedValue);
}
/// <summary>
/// Creates a Dynamics365Field instance from the field's AttributeMetadata.
/// </summary>
/// <param name="attributeMetadata">The AttributeMetadata.</param>
/// <returns>A Dynamics365Field.</returns>
public static Dynamics365Field CreateFromMetadata(AttributeMetadata attributeMetadata, Dynamics365Connection connection)
{
Dynamics365Field field = null;
Dynamics365TypeConverter converter = new Dynamics365TypeConverter(attributeMetadata);
if (converter.CanConvertTo(converter.Dynamics365Type) && attributeMetadata.DisplayName.LocalizedLabels.Count > 0)
{
field = new Dynamics365Field()
{
LogicalName = attributeMetadata.LogicalName,
DisplayName = attributeMetadata.DisplayName.UserLocalizedLabel.Label,
EntityLogicalName = attributeMetadata.EntityLogicalName,
IsPrimaryId = (bool)attributeMetadata.IsPrimaryId,
CanCreate = (bool)attributeMetadata.IsValidForCreate,
CanUpdate = (bool)attributeMetadata.IsValidForUpdate,
Targets = attributeMetadata is LookupAttributeMetadata ? ((LookupAttributeMetadata)attributeMetadata).Targets : default(string[])
};
// see https://docs.microsoft.com/en-us/dynamics365/customer-engagement/developer/configure-activity-feeds
if ((field.EntityLogicalName == "post" || field.EntityLogicalName == "postfollow") && attributeMetadata is LookupAttributeMetadata && field.Targets?.Length == 0)
{
using (OrganizationServiceProxy proxy = connection.OrganizationServiceProxy)
{
ConnectionCache cache = new ConnectionCache(connection);
string cacheKey = string.Format("GetPostConfigurations");
string[] targets = (string[])cache[cacheKey];
if (targets == null)
{
const string ENTITY_NAME_LOGICAL_NAME = "msdyn_entityname";
FilterExpression filter = new FilterExpression();
filter.AddCondition("statecode", ConditionOperator.Equal, 0);
filter.AddCondition("statuscode", ConditionOperator.Equal, 1);
QueryExpression query = new QueryExpression()
{
EntityName = "msdyn_postconfig",
ColumnSet = new ColumnSet(ENTITY_NAME_LOGICAL_NAME),
Criteria = filter,
};
EntityCollection response = proxy.RetrieveMultiple(query);
field.Targets = new string[response.Entities.Count];
for (int entityIndex = 0; entityIndex < response.Entities.Count; entityIndex++)
{
field.Targets[entityIndex] = response.Entities[entityIndex].Attributes[ENTITY_NAME_LOGICAL_NAME].ToString();
}
cache[cacheKey] = field.Targets;
}
}
}
}
return(field);
}