Thank you for writing.
Most RadSpreadsheet examples import a document because this is a popular scenario. However, the document model of the control allows you to build a document from scratch. All you need to do is set the values you get from the database to the appropriate cells. Attached is a very simple project that demonstrates how to access and set the values of cells. I hope you will find it useful.
Please note that our Silverlight suite contains two grid-like controls: RadSpreadsheet and RadGridView. They seem alike at first sight, however, they are semantically different. Unlike RadGridView, RadSpreadsheet is not intended to support bound scenarios. While RadGridView is designed to present bound data, RadSpreadsheet is dedicated to creation and manipulation of documents.
In this sense, you can pull data from your database and present it in RadSpreadsheet, however, changing the data in the control will not update automatically your data base. If you expect such an update to be performed, RadGridView will be a better choice for your requirements.
I hope you will find the sample project and the information about RadGridView and RadSpreadsheet helpful. Feel free to write back if you have further queries on the topic. I will do my best to assist you.
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