//
// This code is part of Document Solutions for Word demos.
// Copyright (c) MESCIUS inc. All rights reserved.
//
using System;
using System.IO;
using System.Drawing;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Linq;
using System.Globalization;
using GrapeCity.Documents.Word;
namespace DsWordWeb.Demos
{
// This example is similar to DataTplProductList, but additionally
// the code uses report templates' conditional construct '{{if...}}..{{else}}..{{endif}}'
// to filter data so that only products with price greater than $50 are included.
// Note that the filtered data is rendered as a table, each record in a separate table row.
// If the first column of a table starts with '{{if...}}' and ends with '{{endif}}',
// empty rows added as the result of template expansion will be removed.
public class DataTplProductIf
{
public GcWordDocument CreateDocx()
{
// Load and modify the template DOCX:
var doc = new GcWordDocument();
doc.Load(Path.Combine("Resources", "WordDocs", "ProductListTemplate.docx"));
var caption0 = "Product List";
var caption1 = $"Products that cost more than $50";
var pStart0 = @"{{#ds}}{{ds.ProductID}}";
var pEnd0 = @"{{/ds}}";
// NOTE: for empty rows to be automatically removed, the first cell in the template row
// must start with {{if ...}}, and the last cell must end with matching {{endif}}:
var pStart1 = @"{{if ds.UnitPrice > 50}}{{ds.ProductID}}";
var pEnd1 = @"{{endif}}";
doc.Body.Replace(caption0, caption1);
doc.Body.Replace(pEnd0, pEnd1);
doc.Body.Replace(pStart0, pStart1);
using var ds = new DataSet();
// Load data and build the product list data source:
ds.ReadXml(Path.Combine("Resources", "data", "DsNWind.xml"));
DataTable dtProds = ds.Tables["Products"];
DataTable dtSupps = ds.Tables["Suppliers"];
var products =
from prod in dtProds.Select()
join supp in dtSupps.Select()
on prod["SupplierID"] equals supp["SupplierID"]
orderby prod["UnitPrice"] descending
select new
{
ProductID = prod["ProductID"],
ProductName = prod["ProductName"],
Supplier = supp["CompanyName"],
QuantityPerUnit = prod["QuantityPerUnit"],
UnitPrice = prod["UnitPrice"]
};
// Add the data source to the data template data sources:
doc.DataTemplate.DataSources.Add("ds", products);
// Process the template:
doc.DataTemplate.Process(CultureInfo.GetCultureInfo("en-US"));
// Done:
return doc;
}
}
}