30 September, 2011

Object reference not set to an instance of an object.

Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

<%@ Page Language="C#" Debug="true" %>


2) Add the following section to the configuration file of your application:

                                                     < compiler language="C#;Csharp"                 extension=".cs"                  type="Microsoft.CSharp.CSharpCodeProvider,system, Version=1.0.5000.0,  Culture=neutral, PublicKeyToken=b77a5c561934e089" />                    ""                                                                                                                                  

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.] 
System.Web.UI.Control.UnloadRecursive(Boolean dispose) +168
System.Web.UI.Control.UnloadRecursive(Boolean dispose) +175
System.Web.UI.Control.UnloadRecursive(Boolean dispose) +175
System.Web.UI.Page.UnloadRecursive(Boolean dispose) +23
System.Web.UI.Page.ProcessRequestCleanup() +43
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +253
System.Web.UI.Page.ProcessRequest() +78
System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
System.Web.UI.Page.ProcessRequest(HttpContext context) +49
ASP.post_aspx.ProcessRequest(HttpContext context) +4
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +100
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

How to find the size of all tables in SQL Server database

SQL Server gives you everything its stored procedure sp_spaceused. Unfortunately this SP does not support iterating over all tables in a database, so we needed to leverage another (undocumented) Stored Procedure sp_msForEachTable.



-- Find DB size.
EXEC sp_spaceused

-- Create a table to counts row and sizes.
[name] NVARCHAR(128),
[rows] CHAR(11),
reserved VARCHAR(18),
data VARCHAR(18),
index_size VARCHAR(18),
unused VARCHAR(18)

INSERT #tbl EXEC sp_msForEachTable 'EXEC sp_spaceused ''?'''


-- # of rows.
SELECT SUM(CAST([rows] AS int)) AS [rows]
FROM #tbl


After executing this, you will get the size of all tables in your database.