In my last post, I showed you how to perform feature upgrade and upgrade my feature from 0.0.0.0 to 1.0.0.1. In this post, I’d like to continue on this topic and upgrade the feature again.

For the first version of my solution, I deploy a document library with a custom document set content type and then upgrade the solution so I index the application number column. Now , I will create a new version of the solution so that it will remove the threshold of the list. You can download the solution here. Once you extract your solution, the first version is in the original folder. In order to deploy the original solution, you need to run the sitecreation.ps1 in the script folder. The version 1.1 will be in the Upgrade folder and version 1.2 will be in the Upgrade2 folder.

You need to make the following changes to the existing solution.

1. Modify the ApplicationLibrary.Template.xml as highlighted below:

2. Adding the following code into the feature event receiver.

</pre>
public override void FeatureUpgrading(SPFeatureReceiverProperties properties, string upgradeActionName, System.Collections.Generic.IDictionary<string, string> parameters)
 {
 base.FeatureUpgrading(properties, upgradeActionName, parameters);
 SPWeb web = GetFeatureWeb(properties);
 SPList applicationLibrary = web.Lists.TryGetList(ApplicationLibraryNamesConstant.ApplicationLibraryName);

switch (upgradeActionName)
 {
 case "IndexApplicationNumber":
 if (applicationLibrary != null)
 {
 SPField queueField = applicationLibrary.Fields["ApplicationNumber"];
 queueField.Indexed = true;
 queueField.Update();
 }
 break;
 case "RemoveListThreshold":
 applicationLibrary.EnableThrottling = false;
 applicationLibrary.Update();
 break;

 }
 }
<pre>

3. Package your solution and run the feature upgrade PowerShell script.

$wspFolder ="v1.2"
$scriptPath=Split-Path $myInvocation.MyCommand.Path
$siteUrl = "http://ybbest"
$featureToCheckGuid="1b9d84cd-227d-45f1-92d4-a43008aa8fe7"
$requiredFeatureVersion="1.0.0.1"
$siteUrlOfFeatureToBeChecked="http://ybbest"
AppendLog "Starting Solution UpgradeSolutionAndFeatures.ps1" Magenta
& "$scriptPath\UpgradeSolutionAndFeatures.ps1" $siteUrl $wspFolder $featureToCheckGuid $requiredFeatureVersion $siteUrlOfFeatureToBeChecked
Write-Host

AppendLog "All features updated" "Green"

References:

Feature upgrade.