Search/Filter a Picture Library with an External Content Type

We have the need to manage 50,000-100,000 images of ODOT Bridges. Currently, they are added to a SharePoint 2010 Picture Library that is associated to an External
Content Type. To handle list threshold and performance issues, we are using folders. There are 2-10 images per folder. SharePoint works great for administering (Adding, Updating, Deleting).
The problem that we have is providing an interface that anonymous users can search/filter. Prior to adding the external content data, we stored the metadata in the
picture library itself. We had an InfoPath form that had multiple (3-5) filtered dropdowns which passed a filter to the picture library web part.that worked without issue.
Do you know of an easy way to search/fliter for one picture library via dropdowns when all of the metadata is stored in a external content type?
Any direction would be greatly appreciated.

Hi James,
How about create a page in SharePoint Designer instead of using InfoPath form? If you would like to have a try, please follow this step:
1. Create a data source using database connection type. Get data from the same data from the data source you used to create the external content type.
2. Add a page > Click Insert tab in the ribbon of Designer > Click Data Source > And insert the data source you created in step1.
3. Insert > ASP.NET > Drop Down list > Choose Data Source for the drop down list control > Select the data source you add in step 2. And Enable AutoPostBack for the drop down list control.
4. Insert the picture XSLT list view web part > click Parameters on the ribbon > Create a new parameter > Select Control as parameter source > Select the drop down list control you added in step 3.
5. Create a filter for the XSLT list view web part > add the fitler equal to the parmaeter you added in step4.
Best regards,
Emir

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    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
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  • Help sought filtering athe results for an external content type.

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    0x0F14
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    SharePoint Foundation         Web Parts                    
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    TechNet Community Support

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    Hi,
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    TechNet Community Support

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