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• What error handling should be used in VB.NET

  - by Craig Johnston

  What error handling should be used in VB.NET? Should you use the "On Error Goto ErrorHandler ... Exit Sub ErrHandler ... End Sub" pattern or should you use the "try { ... } catch { ... } finally { ...}" pattern?

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• Why is it necessary to remove and then re-add a user to a SQL Server database after restoring it fro

  - by Craig Johnston

  Why is it necessary to remove and then re-add a user to a SQL Server database after restoring it from a file? If I don't do this, I get a "User login failed" when trying to access the database using this username from apps.

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• Upload File to Database in ColdFusion

  - by George Johnston

  I simply would like to upload a file to my database using ColdFusion. I understand how to upload an image to a directory, but I would like to place it directly in the database. I have set a database field to varbinary(MAX) to accept the image and have the stored procedure to insert it. Currently my code for uploading the image to my file system is: <cfif isdefined("form.FileUploadImage")> <cffile action="upload" filefield="FileUploadImage" destination="#uploadfolder#" nameconflict="overwrite" accept="image/*" > </cfif> I've obviously left some of the supporting code out, but really all I need to do is get a binary representation of the file stored in memory, instead of the file system. Any experts out there that can help? Thanks, George

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• .NET: Is it possible to log calls of .NET assembly methods?

  - by Craig Johnston

  Is it possible to log calls of .NET methods made while an application is running?

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• What do Repair and Compact operations do to an .MDB? Will they stop an application crashing?

  - by Craig Johnston

  What do Repair and Compact operations do to an .MDB? If these operations do not stop a 1GB+ .MDB backed VB application crashing, what other options are there? Why would a large sized .MDB file cause an application to crash?

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• What is best and simplest http user agent in .NET?

  - by Craig Johnston

  What is the best and simplest http user agent in .NET? I simply want to put in the url have it return the page as a string.

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• Access a webservice behind a membership provider

  - by George Johnston

  I have one website that hosts a webservice which uses membership provider authorization. I would like to be able to authenticate through my webservice call from a second site without getting bounced back to my login page on the webservice site. How can I accomplish this?

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• Numeric representation of a color

  - by George Johnston

  What would be the best format to numerically represent a color in .NET so that I wouldn't have to use the Color object? Right now I am saving the color as a the HTML representation, but in order to use it I have to parse it out. I am dealing with a 800x600 canvas that stores a color value for each pixel and I need to be able to render the color out as quick as possible without bloating my application out to storing 500k+ color objects.

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• What is the simplest http client in .NET?

  - by Craig Johnston

  What is the simplest http client in .NET? I simply want to put in the url have it return the page as a string.

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• C#: can you add to an enum type in run-time

  - by Craig Johnston

  If I have the enum type: Public enum Sport { Tennis = 0; Football = 1; Squash = 2; Volleyball = 3; } Can I somehow add during run-time: PingPong = 4

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• C#: is there way for a class to 'remove' methods that it has inherited

  - by Craig Johnston

  Is there way for a class to 'remove' methods that it has inherited? eg. If I don't want my class to have a ToString() method can I do something so that it is no longer available?

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• C#: why does the string type have a .ToString() method

  - by Craig Johnston

  C#: Why does the string data type have a .ToString() method?

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• How can I serve subversion from my IIS 7 server?

  - by George Johnston

  I set up subversion on my Windows 2008 server and it works fine locally, but when on a remote machine, I would like to be able to access my repository by using the URL of a website hosted on my server. Any idea how I can set that up?

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• Will existing DAO code work against a SQL Server?

  - by Craig Johnston

  If I transfer data from a Access MDB into a SQL Server, will DAO code in a VB app work against the SQL Server. I realise there will need to be changes to the initial connection calls but will anything else need to change?

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• Color single pixel in XNA

  - by George Johnston

  Give a Point, how can I color a single pixel in XNA?

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• What is an easy to list the foreign key contraints in an MDB?

  - by Craig Johnston

  What is an easy to list the foreign key contraints in an MDB? Is there a system table that can be queried in order to list this information? Specifically, I need to know whether any foreign key contraints exist in the MDB.

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• SQL: HAVING clause

  - by Craig Johnston

  See the following SQL statement: SELECT datediff("d", MAX(invoice.date), Now) As Date_Diff, MAX(invoice.date) AS max_invoice_date, customer.number AS customer_number FROM invoice INNER JOIN customer ON invoice.customer_number = customer.number GROUP BY customer.number If the the following was added: HAVING datediff("d", MAX(invoice.date), Now) > 365 would this simply exclude rows with Date_Diff <= 365? What should be the effect of the HAVING clause here?

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• C#: how to construct strings

  - by Craig Johnston

  Which of these will achieve the correct result: (1) int X = 23; string str = "HELLO" + X.ToString() + "WORLD"; (2) int X = 23; string str = "HELLO" + X + "WORLD"; (3) int X = 23; string str = "HELLO" + (string)X + "WORLD"; EDIT: The 'correct' result is to output: HELLO23WORLD

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• How often should a programmer communicate with management?

  - by George Johnston

  I struggle with finding a good medium on communication. In our jobs, it seems like it's very easy to get lost in code and lose track of time. It also seems kind of ridiculous to send out updates for every tiny task. Even though I am working very hard on getting things done, in a company that has very active communication between other branches, it tends to look bad for me when I'm not constantly updating my status. However, if I'm working on a 3-4 hour project, I'm not going to update management for every single line of code that I output. Broad I know, depends on the people, company, etc, but what would be a good general rule of thumb for effective communication?

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• Overloading methods in C#

  - by Craig Johnston

  Is there a way to simplify the process of adding an overloaded method in C# using VS2005? In VB6, I would have just added an Optional parameter the function, but in C# do I have to have to type out a whole new method with this new parameter?

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• c#: can you use a boolean predicate as the parameter to an if statement?

  - by Craig Johnston

  In C#, can you use a boolean predicate on its own as the parameter for an if statement? eg: string str = "HELLO"; if (str.Equals("HELLO")) { Console.WriteLine("HELLO"); } Will this code output "HELLO", or does it need to be: string str = "HELLO"; if (str.Equals("HELLO") == true) { Console.WriteLine("HELLO"); } If there is anything else wrong with the above code segments, please point it out.

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• SQL: ... WHERE X IN (SELECT Y FROM ...) ...

  - by Craig Johnston

  Is the following the most efficient in SQL to achieve its result: SELECT * FROM Customers WHERE Customer_ID NOT IN (SELECT Cust_ID FROM SUBSCRIBERS) Could some use of joins be better and achieve the same result?

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• Close all HTML unclosed IMG tags

  - by George Johnston

  Is it possible to do a regex replace on all IMG tags that are unclosed? If so, how would I identify: <img src="..." alt="..."> ...as a potential canidate to be replaced? = <img src="..." alt="..."/> Update: We have hundreds of pages, and thousands of image tags, all must of which must be closed. I'm not stuck on RegEx -- any other method, aside from manually updating all IMG tags, would suffice.

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• How do I style just the thumbnail image in this post?

  - by Mike Johnston

  I need help with some CSS styling. I've tried various options with Firebug and cannot sort this out. How can I style the thumbnails on my posts (eg url: http://thatcriticguy.com/index.php?post/4/crossover-9-revamped-reinvented-and-a-must-have) and not style all images in the post at the same time. I have numerous posts on this site and need to only style the ones that are thumbnails that float right. Is there a way to do this without modifying the template code just using CSS?

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• C#: do enums cast themselves as strings or integers as appropriate in the context

  - by Craig Johnston

  If I have the enum: public enum VehicleType { Car = 0, Boat = 1, Bike = 2, Spaceship = 3 } and I then do: int X = 10; VehicleType vt = (VehicleType)2; X = X + vt; Console.WriteLine("I travel in a " + vt + " with " + X + " people."); What should the output be in C#?

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