CSV到XML中是增加的XElement如果XAttribute = 「」

Question

我已經創建一個CSV文件的XML文件是這樣

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XML文件我想創建

<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XML文件我獲得

<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ProductName未分配，我該如何避免添加產品？

Answer 1

過濾器添加到您的LINQ查詢以過濾掉空產品：

where !String.IsNullOrEmpty(fields[4]) 

緊接在該：

let fields = items.Split(';') 

無論如何，如果你的條件是如此簡單，你甚至不需要它，你可能會過濾出Split指令本身的條目：

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

EDI T 你的代碼是非常固定的，所以......你確定你需要使用LINQ和LINQ到XML嗎？我想這將是更可讀反正...這樣寫：

 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); 

}