//// This code is part of Document Solutions for Word demos.// Copyright (c) MESCIUS inc. All rights reserved.//usingSystem.Globalization;usingGrapeCity.Documents.Word; namespaceDsWordWeb.Demos{// This example demonstrates the use of 'if/else' construct in report templates// to filter data source on a condition (that a certain field starts with the letter 'S').publicclassDataTplIfStartsWith {publicGcWordDocumentCreateDocx() {// The data source (ocean and sea data from Wikipedia):var oceans = new[] {new { name = "Pacific", areaOfWorldOcean = 0.466, volumeOfWorldOcean = 0.501, seas = new[] { new {name = "Australasian Mediterranean Sea" }, new { name = "Philippine Sea" }, new { name = "Coral Sea" }, new { name = "South China Sea"} } },new { name = "Atlantic", areaOfWorldOcean = 0.235, volumeOfWorldOcean = 0.233, seas = new[] { new {name = "Sargasso Sea" }, new { name = "Caribbean Sea" }, new { name = "Mediterranean Sea" }, new { name = "Gulf of Guinea" } } },new { name = "Indian", areaOfWorldOcean = 0.195, volumeOfWorldOcean = 0.198, seas = new[] { new {name = "Arabian Sea" }, new { name = "Bay of Bengal" }, new { name = "Andaman Sea" }, new { name = "Laccadive Sea" } } },new { name = "Southern", areaOfWorldOcean = 0.061, volumeOfWorldOcean = 0.054, seas = new[] { new {name = "Weddell Sea" }, new { name = "Somov Sea" }, new { name = "Riiser-Larsen Sea" }, new { name = "Lazarev Sea" } } },new { name = "Arctic", areaOfWorldOcean = 0.043, volumeOfWorldOcean = 0.014, seas = new[] { new {name = "Barents Sea" }, new { name = "Greenland Sea" }, new { name = "East Siberian Sea" }, new { name = "Kara Sea" } } }, }; var doc = newGcWordDocument(); // Add the data source: doc.DataTemplate.DataSources.Add("ds", oceans); // Add a list template so that the data is formatted as a list:var myListTemplate = doc.ListTemplates.Add(BuiltInListTemplateId.BulletDefault, "myListTemplate"); // Filter output using if/then/else - print only names starting with an 's':var p = doc.Body.Paragraphs.Add("{{if StartsWith(UCase(ds.seas.name),\"S\")}}{{ds.seas.name}}{{endif}}", doc.Styles[BuiltInStyleId.ListParagraph]); p.ListFormat.Template = myListTemplate; // Expand the templates: doc.DataTemplate.Process(CultureInfo.GetCultureInfo("en-US")); // Add a short note describing the demo at the top of the document: doc.Body.Paragraphs.Insert("This example demonstrates the use of 'if/else' construct in report templates " +"to filter data source on a condition (that a certain field starts with the letter 'S')." +"Please see this sample source code for full details.",InsertLocation.Start); doc.Body.Paragraphs.Insert("Report templates: if data starts with 'S'", doc.Styles[BuiltInStyleId.Heading1], InsertLocation.Start); // Done:return doc; } }}