ErrorEntity.cs

using System;
using System.Linq;
using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Table;
using Elmah;
using System.Collections;
using Microsoft.WindowsAzure.ServiceRuntime;

namespace YouApplicationNameHere
{
        /// <summary>
        /// This class was installed as part of the Elmah.Tables package
        /// </summary>  
        public class ErrorEntity : TableEntity
        {
            public string SerializedError { get; set; }

            public ErrorEntity() { }
            public ErrorEntity(Error error)
                : base(string.Empty, (DateTime.MaxValue.Ticks - DateTime.UtcNow.Ticks).ToString("d19"))
            {
                this.SerializedError = ErrorXml.EncodeString(error);
            }
        }

        /// <summary>
        /// This class was installed as part of the Elmah.Tables package
        /// </summary>  
        public class TableErrorLog : ErrorLog
        {
            private string connectionString;

            public override ErrorLogEntry GetError(string id)
            {
                var table =
                    CloudStorageAccount.Parse(connectionString)
                                       .CreateCloudTableClient()
                                       .GetTableReference("elmaherrors");
                TableOperation retrieveOperation = TableOperation.Retrieve<ErrorEntity>(string.Empty, id);
                TableResult retrievedResult = table.Execute(retrieveOperation);

                ErrorEntity entity = retrievedResult.Result as ErrorEntity;

                return new ErrorLogEntry(this, id, ErrorXml.DecodeString(entity.SerializedError));
            }

            public override int GetErrors(int pageIndex, int pageSize, IList errorEntryList)
            {
                var count = 0;

                var table =
                   CloudStorageAccount.Parse(connectionString)
                                      .CreateCloudTableClient()
                                      .GetTableReference("elmaherrors");

                TableQuery<ErrorEntity> query =
                    (new TableQuery<ErrorEntity>()).Where(TableQuery.GenerateFilterCondition("PartitionKey",
                                                                                             QueryComparisons.Equal,
                                                                                             string.Empty))
                                                   .Take((pageIndex + 1)*pageSize);

                var result = table.ExecuteQuery<ErrorEntity>(query);
                var errors = result.ToList().Skip(pageIndex*pageSize);

                foreach (var error in errors)
                {
                    errorEntryList.Add(new ErrorLogEntry(this, error.RowKey, ErrorXml.DecodeString(error.SerializedError)));
                    count += 1;
                }
                return count;
            }

            public override string Log(Error error)
            {
                var entity = new ErrorEntity(error);
                var table =
                    CloudStorageAccount.Parse(connectionString)
                                       .CreateCloudTableClient()
                                       .GetTableReference("elmaherrors");

                TableOperation insertOperation = TableOperation.Insert(entity);
                table.Execute(insertOperation);
                return entity.RowKey;
            }

            public TableErrorLog(IDictionary config)
            {
                connectionString = (string)config["connectionString"] ?? RoleEnvironment.GetConfigurationSettingValue((string)config["connectionStringName"]);
                Initialize();
            }

            public TableErrorLog(string connectionString)
            {
                this.connectionString = connectionString;
                Initialize();
            }

            void Initialize()
            {
                CloudStorageAccount.Parse(connectionString).CreateCloudTableClient().GetTableReference("elmaherrors").CreateIfNotExists();
            }
        }

}