Custom Search Results in KnowledgeLake Imaging for SharePoint - Part 1

by Scosby Friday, December 10, 2010


This post uses Imaging for SharePoint version 4.1 and requires the SDK. Contact KnowledgeLake to learn more about Imaging for SharePoint or the SDK. Contact KnowledgeLake Support to obtain the latest SDK if your company already has a license.

This post will demonstrate how to create a Silverlight Search Results control in a SharePoint Solution. This post will use the DataGrid control available in Microsoft’s Silverlight Control Toolkit. When doing any development work, one should always test in a staging/testing environment before going live to a production server. Class files are available for download at the end of the post.

Getting Started

Extending KnowledgeLake Imaging for SharePoint

KnowledgeLake Imaging for SharePoint allows for the extension of the Search Results control in the search center and the web part with a custom Silverlight 4 control. This is a powerful feature because it gives users the ability to customize the display of KnowledgeLake Search Results in a variety of ways. However, any custom Search Results control will replace the default KnowledgeLake control in both the search center and the web part. There is no way to add functionality to the default KnowledgeLake Search Results control. In fact, a custom control will not inherit any functionality from the default control. All the functionality of a custom control must be implemented by the developer from the ground up. See figure 1 below for a picture of the default control in the search center, it would look similar in the web part.

Figure 1 - Default Search Results Control

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Setting Up the SharePoint Solution Project

Create a new Silverlight 4 application and name it KLSearchExtensions. The Silverlight application does not need to be hosted in a new web site. Uncheck the “Host the Silverlight application in a new Web site” box in the New Silverlight Application dialog, it should now appear similar to Figure 2 below.

Figure 2 - Create a New Silverlight Application
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In my previous post on Creating SharePoint 2010 Solutions for Silverlight Applications I described how to easily deploy Silverlight applications to SharePoint 2010. This approach allows the developer to hit F5 to build, deploy, and debug the Silverlight extension. Pretty slick stuff! Create a new SharePoint Solution and name it ExtensionSolution, as shown in Figure 3 below.

Figure 3 - Create a New SharePoint Solution

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The extension must be placed in the %SharePointRoot%\Template\Layouts\KLClientBin directory, thus set the Deployment Location’s Path property appropriately. This is shown in Figure 7 below. Read more about project output references in my previous post mentioned above.

Figure 4 - Set Deployment Location Path

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Creating the Extension Project

The extension will be designed to use the Model-View-ViewModel (MVVM) pattern. Add to the project the following references from the KnowledgeLake Imaging for SharePoint SDK and Silverlight Control Toolkit:

·         KnowledgeLake.Silverlight.dll

·         KnowledgeLake.Silverlight.Imaging.Search.dll

·         KnowledgeLake.Silverlight.Search.Contracts.dll

·         System.Windows.Controls.Input.Toolkit.dll

·         System.Windows.Controls.Toolkit.dll

KnowledgeLake Imaging for SharePoint requires a user control to be specifically named and implement a specific interface. Add a new User Control to the KLSearchExtensions project and name it CustomQueryResults, if the control is not exactly named this way the extension won’t be recognized.

Part two of this series will look at the ViewModel for the Custom Search Results.

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