Settings must be of the form "name=value" in Eventhub client creation - azure

Question

An exception of type 'System.FormatException' occurred in Microsoft.WindowsAzure.Storage.dll but was not handled in user code
Additional information: Settings must be of the form "name=value".
while creating eventProcessorHost in EventHub
var eventProcessorHost = new EventProcessorHost(
EhEntityPath,
EventHubConsumerGroup.DefaultGroupName,
EhConnectionString,
StorageConnectionString,
StorageContainerName);
Sample values
string EhConnectionString = "Endpoint=sb://namespacename-ns.servicebus.windows.net/;SharedAccessKeyName=receivepolicy;SharedAccessKey=v7IHIH+jB3+H2UMxEOr9kHYfhwj1Q=;EntityPath=sampleeventhub";
string EhEntityPath = "sampleeventhub";
string StorageContainerName = "containername"; //I have created in blob and type as container
string StorageAccountName = "storegenameinazure";
string StorageAccountKey = "GHasmRRJgI5s123ziDlfOKQ7IBrO23EvHpk++TV0L2hU2erdI7PyY+gtvUop67lIU0+zQsM09sQ==";
static readonly string StorageConnectionString = string.Format("DefaultEndpointsProtocol=https;AccountName={0};AccountKey={1}", StorageAccountName, StorageAccountKey);

Answer 1

According to your description, I leverage Microsoft.Azure.ServiceBus.EventProcessorHost version (2.2.10) to test this issue.
An exception of type 'System.FormatException' occurred in Microsoft.WindowsAzure.Storage.dll but was not handled in user code. Additional information: Settings must be of the form "name=value".
Based on your code, I assumed that you have not built your EventProcessorHost constructor correctly, the constructor you used looks like this:
At this point, the parameter StorageContainerName you passed would be treated as storageConnectionString parameter, then you got the above error.
In summary, please build your EventProcessorHost with the correct constructor. Here are some tutorials you could refer to them (event-processor-host-best-practices and azure-event-hubs-processing).