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.NET Matters: Finalizers, Assembly Names, MethodInfo, and More

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

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.NET Matters: Debugging finalizers


Find out how to use finalizers as a way to warn developers who use your custom types when they are garbage collected without having been disposed of correctly.

Stephen Toub

MSDN Magazine November 2007

Export Visio Database Table Names to Excel

If you use the Enterprise Architect edition of Microsoft Visio for data modeling regularly, then there is a good chance that at some point you've wanted to export just the table names into Excel. You might want to do this to map logical ERD entities to physical data model tables, track project status by entity, or track overlap between database versions.

Error: Encountered multiple versions of the same assembly with GUID...try pre-importing...TlbImp


Hi!  Can someone tell me how I can troubleshoot the following error: "Encountered multiple versions of the same assembly with GUID...try pre-importing one of these assemblies".

The website developed in VS 2010 (.Net 3.5). This error is only received on my workstation.  Another person developing the site does not experience this issue at all.  Also, not sure if this matters, but on my workstation the 'Assembly Information...' dialog contains no values even though the 'AssemblyInfo.vb' file does specify values for the title, desc, etc.  The GUID being referenced in the error is the main project of the three projects within the solution.

I tried looking through the GAC, but do not see any references to the projects or DLLs in the VS solution and am not sure what else/where to look.

If I delete the copy of the solution on my local machine and pull down a copy from source control (AnkhSVN) the solution will build with no error.  Once I make any changes, such as adding a new aspx file, then the error is received.

I can provide any additional information needed.

Creating A Stored Procedure Which Searches Team Names



I'm have on my web page a text search box which I want users to type in there favourite football team and this will display a gridview of the teams with the replica shirts I offer.

This is where I thought about creating a stored procedure to carry out this task.

I looked online for ideas but I not found anything as yet.

If anyone done anything similar to my request please let me know.

The type 'System.Data.Linq.DataContext' is defined in an assembly that is not referenced. You must



This is frustrating, and I don't know how to solve it.

I have a strange problem. I am adding a LinqDatasource object, and set the context:

        protected void LinqDataSource_ContextCreating(object sender, LinqDataSourceContextEventArgs e)
            e.ObjectInstance = new KaruselaDataContext(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);

Then I get this error:
The type 'System.Data.Linq.DataContext' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Linq, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089'.


On web.config I already have this:
<add assembly="System.Data.Linq, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>

NOTE: The datacontext is in a different project (DLL proect) where I added a refernce to System.Data.Linq.

is there another way adding a refernce to a web project? or only though teh web.config?


MySql.Data assembly problem



I added refernece MySql.Data to my project. My web.config looks like that:

<?xml version="1.0"?>
                <add assembly="MySql.Data, Version=, Culture=neutral, PublicKeyToken=C5687FC88969C44D"/>

But when in ServerExplorer I try "Add Connection..." I can't find "MySql Database" in the "Choose Data Source" dialog box?

What the problem can be?

Registering controls of current assembly object reference NOT set error


Hi There,

I have created a simple ASP.net Web Application (2.0) and have added a web user control.

Now in my page I have added this control but I have registered like this,

<%@ Register Assembly="WebApplication1" Namespace="WebApplication1" TagPrefix="Custom" %>

Which means I want to access all the controls in my current Web Application project

Then I have added my user control like this,

<Custom:MyUserControl ID="MyUserControl1" runat="server" PublicProperty="Hello" />

Every thing is fine but when I execute the project, NO control on my user control gets "instantiated" and thus I receive error "Object Reference Not Set"

Note that My Control has,

1) Public property PublicProperty as String

2) 1 Label control

In Load Event Handler I am setting Text property of Label Control to PublicProperty. Here object reference NOT set error occurs (which means Label control is NOT initialized).

I don't want to register my control using Src, TagPrefix etc. Any ideas?


Could not load file or assembly - Web Deployment Project



I have the following projects in a solution :

- A Web Application

- A Class Library

- A Web Deployment project

The Web Application compiles and run fine when I don't go through the Web Deployment Project. However when I try to use that, I get the following error:

Error 1 An error occurred creating the configuration section handler for hibernate-configuration: Could not load file or assembly 'NHibernate' or one of its dependencies. The system cannot find the file specified. (F:\Folke\Folke.csproj_deploy\Release\web.config line 4) 1 1 Folke.csproj_deploy

"An error occurred creating the configuration section handler for hibernate-configuration: Could not load file or assembly 'NHibernate' or one of its dependencies. The system cannot find the file specified. (F:\Folke\Folke.csproj_deploy\Release\web.config line 4)"

This is the beginning of my Web.config:


dynamically change column names in Crystal reports


I need to develop 3 pages.

On the first page user defines atmost 7 column names to be displayed on the report. I'm saving these names in a Sql DB table 'Columns' with Column_Nm and Column_ID as Table columns.

On the second page I'm retrieving column_Nm from the table and displaying them on the page so that the user enters the data. This data is saved in another table 'Summary' with the Columns column1 through column7.

on the 3rd page I need to show a report of 'Summary' table.

How do I dynamically replace column1 through column7 names with that of 'Column_Nm' on the report?

Any help/suggestions would be appreciated.


CLR Inside Out: Migrating an APTCA Assembly to the .NET Framework 4


The CLR security model in the Microsoft .NET Framework 4 has undergone some substantial changes, including the adoption of "Level2" transparency, similar to the Silverlight security model. Mike Rousos provides an in-depth explanation of how that will likely impact authors of AllowPartiallyTrustedCallers (APTCA) libraries.

Mike Rousos

MSDN Magazine March 2010

.NET Matters: Aggregating Exceptions


Exceptions in .NET are the fundamental mechanism by which errors and other exceptional conditions are communicated. This month's column provides information about how to aggregate exceptions to help manage a variety of scenarios in which multiple exceptions might result from one operation, including scenarios involving parallelism and concurrency.

Stephen Toub

MSDN Magazine August 2009

.NET Matters: Parallelizing Operations With Dependencies


In this month's installment, Stephen Toub examines some techniques for enforcing dependencies in the running order of asynchronous operations and builds a DependencyManagement class to help.

Stephen Toub

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.NET Matters: Ordered Execution With ThreadPool


This month we demonstrate how you can use the ThreadPool to support ordered execution without having to build custom thread pools yourself.

Stephen Toub

MSDN Magazine February 2009

Net Matters: Round-Robin Access To The ThreadPool


Stephen Toub shows you how to add round-robin scheduling support on top of the ThreadPool for more granular processing control.

Stephen Toub

MSDN Magazine January 2009

.NET Matters: False Sharing


This month: memory access issues in multi-core systems and diagnosing and avoiding false sharing in your parallel computing applications.

Stephen Toub, Igor Ostrovsky, and Huseyin Yildiz

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.NET Matters: Asynchronous I/O with WebClient


In this month's installment of .NET Matters, columnist Stephen Toub answers reader questions concerning asynchronous I/O .

Stephen Toub

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.NET Matters: Asynchronous Stream Processing


This month Stephen Toub discusses asynchronous stream processing.

Stephen Toub

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