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Active Directory Configuration Issues ... by zc0000

1. Configure a "Active Directory Domain Controller" on server A 2. Set Server B's domain to the domain configured in server A , say, "sample.com" In step 2 we may get some exceptions as : The following error occurred when DNS was queried for the service...
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A client problem, not server's : A network-related or instance-specific error occurred while establishing a connection to SQL Server... by zc0000

I don't know, when and why, I cannot connect remote SQL server from my win7 & winserver2008 (64bit) machines. When trying to connect a server by typing IP ( xx.xx.xx.xx ) in the server name in "Management studio->Connect Server" dialog box, I always...
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How to circumvent "Cannot obtain value of local or argument as it is not available at this instruction pointer, possibly because it has been optimized away by zc0000

Sometimes when debugging code we can't "watch" variable's value and only get this alerting message: Cannot obtain value of local or argument as it is not available at this instruction pointer, possibly because it has been optimized away As this has been...
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Base class' constructor takes effect even not explicitly called. by zc0000

I almost have no impression at all on a heavily important c# grammar issue...... Originally I thought base class' constructor doesn't participate in any of derived class' constructional logic unless explicitly called for serving , just like : public Manager...
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asp.net Auto-generated SQLEXPRESS database: Failed to generate a user instance of SQL Server ( troubleshooting 1 ) by zc0000

If you adopt .net Login controls to handle user authentication tasks and simply rely on default connection settings which generates SQLEXPRESS-based database in APP_Data folder , especially under the windows 7 or windows server 2008 system, you are likely...
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SQL SERVER 2008 Database Diagram: "Saving changes is not permitted" by zc0000

When making some datatable changes in db diagram environment, a popup window might show up with this message: Saving changes is not permitted. The changes that you have made require the following tables to be dropped and re-created. You have either made...
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Database operations through SQL: Database Restore ... by zc0000

If using sql to perform a database restoring , care the sql-codes very well. Any trivial mistake may prevent a successful execution. Cases are listed here based on simple experiments. with operation: MOVE 'logical_file_name_in_backup' TO 'operating_system_file_name...
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MyLittleAdmin: Could not load file or assembly 'mlt_ver' or one of its dependencies. An attempt was made to load a program with an incorrect format. by zc0000

When first running mylittleadmin web application I get exception as titled. It is because of the application is running on 64-bit asp.net process currently but is designed to work on top of 32-bit asp.net mechanism only. Based on different IIS suites...
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Solution to the alert "The object identifier does not present a valid object" when trying to debug IIS-supplied applications through VS by zc0000

Met the error and felt wield ... Then I found a great article to explain the reason and point to the key of truth. http://blogs.iis.net/brian-murphy-booth/archive/2008/06/03/visual-studio-2008-unable-to-debug-asp-net-app-on-iis-7-0.aspx -------------...
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Alert Cannot set a credential for principal 'sa' .... when trying to modify 'sa' properties through sql management studio 2008.. by zc0000

http://support.microsoft.com/kb/956177 You receive an exception in SQL Server 2008 when you try to modify the properties of the SQL Server Administrator account by using SQL Server Management Studio SYMPTOMS Consider the following scenario. You use the...
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