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如果XAttribute =“”,則csv至xml不添加xElement

[英]csv to xml not adding xElement if XAttribute = “”

我已經從這樣的csv文件創建了一個xml文件

private void button2_Click(object sender, EventArgs e)
        {
            String[] FileContent = File.ReadAllLines(csvPathFile);
            String XMLNS = "";
            int idCountProduct = 1;
            XElement Inv = new XElement("data",
                from items in FileContent
                let fields = items.Split(';')
                select new XElement("category",
                    new XAttribute("idCategory", fields[0]),
                    new XAttribute("CategoryName", fields[1]),
                    new XElement("products",
                        new XElement("product",
                            new XAttribute("IdProduct", idCountProduct++),
                            new XAttribute("Rif", fields[0]),
                            new XAttribute("ProductName", fields[2]),

                            new XElement("products",
                                new XElement("product",
                                    new XAttribute("IdProduct", idCountProduct++),
                                    new XAttribute("Rif", fields[0]),
                                    new XAttribute("ProductName", fields[3]),
                                    new XElement("products",
                new XElement("product",
                    new XAttribute("IdProduct", idCountProduct++),
                    new XAttribute("Rif", fields[0]),
                    new XAttribute("ProductName", fields[4]));
            File.WriteAllText(xmlPathFile, XMLNS + Inv.ToString());
        }

這是我的csv文件

1;Beverages;Lemon Juice;;Orange Juice

這是我要創建的xml文件

<data>
<category idCategory="1" CategoryName= "Beverages">
    <products>
      <product IdProduct="1" Rif="1" ProductName= "Lemon Juice" />
      <product IdProduct="2" Rif="1" ProductName= "Orange Juice" />
<products/>
<category/>
</data>

這是我獲得的xml文件

<data>
<categories>
<category idCategory="1" CategoryName= "Beverages">
    <products>
      <product IdProduct="1" Rif="1" ProductName= "Lemon Juice" />
      <product IdProduct="2" Rif="1" ProductName= "" />
      <product IdProduct="3" Rif="1" ProductName= "Orange Juice" />
<products/>
<category/>
<categories/>
</data>

如果未分配ProductName,如何避免添加產品?

將過濾器添加到LINQ查詢中以過濾出空產品:

where !String.IsNullOrEmpty(fields[4])

在此之后:

let fields = items.Split(';')

無論如何,如果您的條件如此簡單,您甚至不需要它,並且可以從Split指令本身中過濾出條目:

let fields = items.Split(';', StringSplitOptions.RemoveEmptyEntries)

編輯您的代碼是相當固定的,因此...確定要使用LINQ和LINQ-to-XML嗎? 我想無論如何它都會更具可讀性...編寫如下:

        XElement data = new XElement("data");
        XDocument document = new XDocument(data);

        int counter = 0;
        foreach (string entry in File.ReadAllLines(csvPath))
        {
            string[] fields = entry.Split(new char[] { ';' },
                                StringSplitOptions.RemoveEmptyEntries);

            XElement category = new XElement("category",
                new XAttribute("idCategory", fields[0]),
                new XAttribute("CategoryName", fields[1]));
            data.Add(category);

            XElement products = new XElement("products");
            category.Add(products);

            for (int i = 2; i < fields.Length; ++i)
            {
                products.Add(new XElement("product",
                    new XAttribute("IdProduct", counter++),
                    new XAttribute("Rif", fields[0]),
                    new XAttribute("ProductName", fields[i])));
            }
        }

        document.Save(xmlPath);

}

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