Delete webparts from Webpart Gallery

Introduction

We may came across the situation to remove all the custom webparts while feature deactivating. Here we are going to see how to remove the webparts programmatically.

Code

Paste the below code in FeatureDeactivating method

  SPSite site = properties.Feature.Parent as SPSite;

            if (site != null)

            {

                var definedElements = properties.Definition.GetElementDefinitions(CultureInfo.InvariantCulture);

                var allFiles = definedElements.Cast<SPElementDefinition>()

                    .SelectMany(x => x.XmlDefinition.ChildNodes.Cast<XmlElement>()

                        .Where(f => f.Name.Equals("File"))

                        .Select(f => f.Attributes["Url"].Value)).ToList();

                var webPartGallery = site.RootWeb.Lists["Webpart Gallery Name"];

                var webPartsToDelete = webPartGallery.Items.Cast<SPListItem>()

                    .Where(w => allFiles.Contains(w.File.Name)).ToList();

                for (var index = webPartsToDelete.Count - 1; index >= 0; --index)

                {

                    var webPartItem = webPartsToDelete[index];

                    webPartItem.Delete();

                }

            }