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// For complete examples and data files, please go to https://github.com/groupdocs-assembly/GroupDocs.Assembly-for-.NET
//Setting up source open document template
const String strDocumentTemplate = "Presentation Templates/Multiple DS.odp";
//Setting up destination open document report 
const String strDocumentReport = "Presentation Reports/Multiple DS.odp";
try
{
    //Instantiate DocumentAssembler class
    DocumentAssembler assembler = new DocumentAssembler();
    //Create an array of data source objects
    object[] dataSourceObj = new object[] { DataLayer.GetAllDataFromXML(), DataLayer.GetProductsDataJson() };
    //Create an array of data source string
    string[] dataSourceString = new string[] { "ds", "products" };

    //Call AssembleDocument to generate report
    assembler.AssembleDocument(CommonUtilities.GetSourceDocument(strDocumentTemplate), CommonUtilities.SetDestinationDocument(strDocumentReport), dataSourceObj, dataSourceString);
}
catch (Exception ex)
{
    Console.WriteLine(ex.Message);
}