[英]How to format XML using XmlWriter in C#.Net?
我想要XML格式,如:
<?xml version="1.0" encoding="UTF-8"?>
<ac:Main xmlns:trip="http://www.test.com/main.xsd"
xmlns:abc="http://www.test.com/Types.xsd"
xmlns:tw="http://www.test.com/TW.xsd"
xmlns:ck="http://www.test.com/CK.xsd"
xmlns:k1="http://www.test.com/K1.xsd"
xmlns:d1="http://www.test.com/D1.xsd"
xmlns:ac="http://www.test.com/Ac.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.test.com/Ac.xsd file:/D:/schema/AC.xsd">
<ac:Records>
<d1:Header>
<abc:FirstElement>firstValue</abc:FirstElement>
</d1:Header>
</ac:Records>
</ac:Main>
因此,我使用XmlWriter編寫了如下代碼:
using (XmlWriter writer = XmlWriter.Create(path, settings))
{
writer.WriteStartElement("ac", "Main", "xmlns");
writer.WriteAttributeString("xmlns", "trip", null, http://www.test.com/main.xsd");
writer.WriteAttributeString("xmlns", "abc", null, http://www.test.com/Types.xsd");
writer.WriteAttributeString("xmlns", "tw", null, http://www.test.com/TW.xsd");
writer.WriteAttributeString("xmlns", "kc", null, "http://www.test.com/CK.xsd");
writer.WriteAttributeString("xmlns", "k1", null, "http://localhost:8080/K1.xsd");
writer.WriteAttributeString("xmlns", "d1", null, "http://localhost:8080/D1.xsd");
writer.WriteAttributeString("xsi","schemaLocation", "http://www.w3.org/2001/XMLSchema-instance", "http://www.test.com/Ac.xsd file:/D:/schema/AC.xsd");
// writer.WriteAttributeString("xmlns", "ac", null, "http://www.test.com/Ac.xsd ");
writer.WriteStartElement("ac", "Records", "xmlns");
writer.WriteStartElement("d1", "Header", "xmlns");
writer.WriteStartElement("abc", "FirstElement", "xmlns");
writer.WriteString("firstValue");
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndElement();
}
但取消注釋行writer.WriteAttributeString(“ xmlns”,“ ac”,null,“ http://www.test.com/Ac.xsd”); 產生錯誤“無法在同一開始元素標記中將前綴“ ac”從“ xmlns”重新定義為“ http://www.test.com/Ac.xsd”。
因此,我對上面的代碼中的那一行表示贊賞,並得到如下輸出:
<?xml version="1.0" encoding="utf-8"?>
<ac:Main
xmlns:wctrp="http://www.test.com/main.xsd"
xmlns:abc="http://www.test.com/Types.xsd"
xmlns:tw="http://www.test.com/TW.xsd"
xmlns:ck="http://www.test.com/CK.xsd"
xmlns:k1="http://www.test.com/K1.xsd"
xmlns:d1="http://www.test.com/D1.xsd"
xmlns:ac="http://www.test.com/Ac.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.test.com/Ac.xsd file:/D:/schema/AC.xsd"
xmlns:ac="xmlns">
<ac:Records>
<d1:Header xmlns:hd1="xmlns">
<abc:FirstElement xmlns:iaiabc="xmlns">firstValue</abc:FirstElement>
</d1:Header>
</ac:Records>
</ac:Main>
不需要的服裝是元素“ Main”中的xmlns:ac =“ xmlns”,'d1:Header'中的xmlns:hd1 =“ xmlns”和
abc:FirstElement中的xmlns:iaiabc =“ xmlns”。
有人可以建議我該怎么做,以刪除不想要的衣服,並以最高格式獲得輸出。
我是XmlWriter的新手。
您正在濫用WriteStartElement。 命名空間不應該是xmlns。 它應該是您將要使用的實際名稱空間。 另外,由於ac的第一次出現是在寫入屬性之前發生的,因此請不要為ac包括xmlns屬性行。 交流的xmlns屬性將由編寫器自動生成。
您實際上可以省去所有xmlns屬性行,但是隨后將在出現它們的第一個元素上聲明名稱空間。
using (XmlWriter writer = XmlWriter.Create(path))
{
writer.WriteStartElement("ac", "Main", "http://www.test.com/Ac.xsd");
writer.WriteAttributeString("xmlns", "trip", null, "http://www.test.com/main.xsd");
writer.WriteAttributeString("xmlns", "abc", null, "http://www.test.com/Types.xsd");
writer.WriteAttributeString("xmlns", "tw", null, "http://www.test.com/TW.xsd");
writer.WriteAttributeString("xmlns", "kc", null, "http://www.test.com/CK.xsd");
writer.WriteAttributeString("xmlns", "k1", null, "http://localhost:8080/K1.xsd");
writer.WriteAttributeString("xmlns", "d1", null, "http://localhost:8080/D1.xsd");
writer.WriteAttributeString("xsi","schemaLocation", "http://www.w3.org/2001/XMLSchema-instance", "http://www.test.com/Ac.xsd file:/D:/schema/AC.xsd");
writer.WriteStartElement("ac", "Records", "http://www.test.com/Ac.xsd");
writer.WriteStartElement("d1", "Header", "http://localhost:8080/D1.xsd");
writer.WriteStartElement("abc", "FirstElement", "http://www.test.com/Types.xsd");
writer.WriteString("firstValue");
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndElement();
}
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