To optimize your FindPagesWithCriteria, it’s good to be as specific as you can. i.e not use one criteria, get 500 hits back and then just use the top 5 out of those. Anyway, when using a PropertyDataType.Boolean and you want to get back those pages [...]]]> Huge title but pretty much what this post is about.

To optimize your FindPagesWithCriteria, it’s good to be as specific as you can. i.e not use one criteria, get 500 hits back and then just use the top 5 out of those. Anyway, when using a PropertyDataType.Boolean and you want to get back those pages that has this set to “false” you can’t really set the value to “false”. Why? Because when the property is false, it has never been set which makes it null.

Let’s see the code:

PropertyCriteria crit = new PropertyCriteria{
            Condition = CompareCondition.Equal,
            Name = ContentPropertyStrings.Finished,
            Type = PropertyDataType.Boolean,
            Value = "false",
            Required = true
};

The code above won’t give you any hits since there won’t be any property set to false, because those properties are null. What you need to do is what you can see below.

PropertyCriteria crit = new PropertyCriteria{
            Condition = CompareCondition.Equal,
            Name = ContentPropertyStrings.Finished,
            Type = PropertyDataType.Boolean,
            IsNull = true,
            Required = true
};

An old problem but I still get this question from time to time so might aswell post it

Simple enough, right?

Now, [...]]]> When you want to alter a page programmatically you need to use EPiServers CreateWriteableClone on the working page. This is because the Page itself is readonly. Now, there’s plenty of info out there how to do this, but just to refresh your mind, here’s some code:

PageData clone = pd.CreateWritableClone();
clone.Property["MyProperty"] = "New value";
DataFactory.Instance.Save(clone, SaveAction.Publish);

Simple enough, right?

Now, here’s the catch. If you are for example saving page ID’s into a customproperty, simply like this “42 43 553 23″ and so forth and you want to change this programmatically by removing one and adding one. So for example, going from ”42 43 553 23″ to ”42 43 55″ won’t work with the code above. The result will be “42 43 553 23 55″ as it will only add it up to your current value. So you want to clear your value before you set it although that is also not enough. You’ll have to save the page after you clear it and THEN you can set your new value and save the page. Something like this

PageData clone = pd.CreateWritableClone();
clone.Property["MyProperty"].Clear();
DataFactory.Instance.Save(clone, SaveAction.Publish);
clone.Property["MyProperty"] = "New value";
DataFactory.Instance.Save(clone, SaveAction.Publish);

If someone has a better way to override values without having to doublesave, please do let me know.

1. Go to admin mode 2. Click on [...]]]> After upgrading EPiServer CMS5 r2 to CMS5 r2sp2 you might get a nice little error in edit mode. This page is not available for the active language. This is due globalization changes and the workaround is to activate a language for your site. To do this do the following:

1. Go to admin mode
2. Click on Config
3. Go to systemsettings
4. Activate Globalization
5. Go to Edit mode
6. click on Language Settings
7. Chose the default language
8. Go back to admin mode
9. Turn off globalization

This should do the trick. Remeber, if you have several sites, you need to click on the root of each one of them and set the language settings on all of them.

Install IIS 6 WMI Compatibility by going to Control Panel, Programs, Turn windows features on and [...]]]> I had to make a clean Vista install on my machine and all of a sudden I was getting System.Runtime.InteropServices.COMException when opening old solutions. The error says very little to the user but what it really want’s to say is:

Install IIS 6 WMI Compatibility by going to Control Panel, Programs, Turn windows features on and off and select as the picture below shows

Here’s an example on how to use this:

Example in VB.Net

Finally, the solution was found [...]]]> One of our customers have a lot of PDF that are linked to their site. Some of these PDF files have % in the filename and this causes a HTTP 400 Bad Request and yes they are encoded correctly. The same error happened with other characters such &, * and :

Finally, the solution was found @ dirk.net with an article regarding 400 bad request in IIS7 (But IIS6 also has the same problem and the solution will work there too). You can read about it here.