datasourcemanager.cs

IList<byte[]> documents;

using (TXTextControl.ServerTextControl tx = new TXTextControl.ServerTextControl())
{
    tx.Create();

    byte[] bTemplate = File.ReadAllBytes("template.tx");

    TXTextControl.DocumentServer.DataSources.DataSourceManager dsManager =
        new TXTextControl.DocumentServer.DataSources.DataSourceManager();

    dsManager.LoadXmlFile("sample_db.xml");

    documents = dsManager.Merge(bTemplate, textControl1);
}