Comments for PrimeDigit - A Design Blog by Will Shaver

Comment on Implementing Optimistic Concurrency with SQL Timestamps by Mike Sullivan

Mike Sullivan — Sat, 09 Jan 2010 20:34:05 +0000

Still a great article 2 1/2 years later. Thanks for the insights into this lighter concurrency processing technique.

Comment on Automatic Parameter Type-Checking by trasloco milano

trasloco milano — Mon, 23 Nov 2009 10:22:14 +0000

Great post.It really contains valuable information.Thanks for sharing.

Comment on NewEgg Fail by Bill

Bill — Thu, 29 Oct 2009 23:52:40 +0000

I’m guessing they’ve got a redirect to some DNS thats probably being blocked. Obviously it’s completely on your end; don’t know why poor Lilian had to be dragged into this.

Have you tried redirecting through a public proxy?
Fire up Fiddler and at will tell you exactly which request is timing out. Awesome tool

Comment on NewEgg Fail by Will

Will — Thu, 29 Oct 2009 21:05:20 +0000

I may in fact have a 3G device that I’ve tethered at work before. But we don’t talk about that.

Comment on NewEgg Fail by Cory

Cory — Thu, 29 Oct 2009 21:02:36 +0000

Help desk people lose their sense of humor after two weeks on the job.

My guess: it’s probably a caching proxy between you and newegg.
- Newegg could solve this by changing their web apps to not reuse URLs or file names. Caching proxy servers cause some web apps to “do crazy stuff”.
- Your network admin could fix this by seeing what newegg’s code is doing, and changing their proxy’s caching rules.
- You could fix this by: tunneling through the caching proxy to a proxy that works (IT will hate you), get another net connection by tethering a 3G device to your workstation (IT will hate you), or just doing the work from home.

Comment on Automatic Parameter Type-Checking by Jonathan

Jonathan — Thu, 22 Oct 2009 17:24:26 +0000

You can use the Convert.ChangeType() method to parse the query string value based on the Type property.

protected override object Evaluate(HttpContext context, Control control)
{
if ((context != null) && (context.Request != null))
{
var value = context.Request.QueryString[QueryStringField];

if (value != null)
{
try
{
return Convert.ChangeType(context.Request.QueryString[QueryStringField], Type);
}
catch (FormatException)
{
}
}
}

return null;
}

Comment on Implementing Optimistic Concurrency with SQL Timestamps by Shaun

Shaun — Fri, 09 Oct 2009 04:36:36 +0000

I implemeted your solution with great success. Thankyou. But for understanding’s sake.
I only have Update on my gridview permitted.
I understand that the timestamp field is passed if you add it to the datakeynames properties.
It ends up in the Keys collection, which I can examine in RowUpdating.
It is not, however, a key in the database table, so why doesn’t it come over in the oldvalues
or newvalues collection on update, without having to add it to the datakeynames property.
I test this by taking it out of datakeynames and adding it as a bound field, visible = ‘false’.
I then test for it’s presence in the old and new values colleciton in rowupdating, and it is not there?
Then it falls over with the wrong method signature.
If I set the timestamp boundfield to visible = “true’ , it is present? But who wants that?
Thanks

Comment on Hiding Your hbm.xml files in Visual Studio (or not) by Nesting NHibernate Mapping Files < Over It.

Nesting NHibernate Mapping Files < Over It. — Tue, 08 Sep 2009 06:07:24 +0000

[...] The problem: Hiding Your hbm.xml files in Visual Studio (or not) [...]

Comment on Implementing Optimistic Concurrency with SQL Timestamps by finex

finex — Sun, 16 Aug 2009 13:16:57 +0000

I problem about “AssignAllProductValues” method.If my datarow is type DateTime and original_AddedDate is datatime.

Simple Code.(from “AssignAllProductValues” method )

protected void AssignAllProductValues(ProductConcurrency.ProductConcurrencyDataRow product,DateTime AddedDate,string AddedBy)
{
product.AddedDate = AddedDate;
product.AddedBy = AddedBy
}

public bool Update(DateTime AddedDate,DateTime original_AddedDate)
{
…..
…..

AssignAllProductValues(product,original_AddedDate);

product.AcceptChanges();

AssignAllProductValues(product,AddedDate);

int rowAffects = Adapter.Update(product);

return rowAffects == 1;
}

from Simple Code above.if comment “//product.AddedDate = AddedDate”. return value = true; it not error

Comment on Bing Fail by detoxdiet

detoxdiet — Thu, 06 Aug 2009 08:48:14 +0000

my initial test result shows that Bing is as good as Google when displaying relevant search results. Google might be having a tough competitor with Microsofts own search engine.