Get all records from azure table storage

You're using wrong class. Use TableQuery to retrieve multiple results. https://msdn.microsoft.com/en-us/library/azure/microsoft.windowsazure.storage.table.tablequery.aspx

If you need further control over the records being returned, you can use ExecuteQuerySegmentedAsync to retrieve data a page (around 1,000 records) at a time.

    var alerts = new List<ServiceAlertsEntity>();

    var query = new TableQuery<ServiceAlertsEntity>();
    TableContinuationToken continuationToken = null;
    do
    {
        var page = await table.ExecuteQuerySegmentedAsync(query, continuationToken);
        continuationToken = page.ContinuationToken;
        alerts.AddRange(page.Results);
    }
    while (continuationToken != null);

Or if you need to restrict your results, e.g. by Partition Key, you can add a filter condition by adding a Where clause to the query in the above code.

    var pk = "abc";
    var filterPk = TableQuery.GenerateFilterCondition(
        nameof(ServiceAlertsEntity.PartitionKey),
        QueryComparisons.Equal, pk);

    var query = new TableQuery<ServiceAlertsEntity>().Where(filterPk);

MS Azure reference

You need to specify a TableQuery, this will give you all entities or you can specify a TableQuery.GenerateFilterCondition to filter the rows.

TableQuery<ServiceAlertsEntity> query = new TableQuery<ServiceAlertsEntity>();

foreach (ServiceAlertsEntity entity in table.ExecuteQuery(query))
{
    Console.WriteLine("{0}, {1}\t{2}\t{3}", entity.PartitionKey, entity.RowKey,
                        entity.Field1, entity.Field2);
}