这是我将新记录附加到现有 XML 文档的代码:
Sub addEXISTING(ByVal c_name As String, ByVal c_age As Integer, ByVal c_sex As String)
Dim e_client = doc.CreateElement("CLIENT")
Dim e_name As Xml.XmlElement = doc.CreateElement("NAME")
Dim e_age As Xml.XmlElement = doc.CreateElement("AGE")
Dim e_sex As Xml.XmlElement = doc.CreateElement("SEX")
e_name.InnerText = c_name
e_age.InnerText = c_age
e_sex.InnerText = c_sex
e_client.AppendChild(e_name)
e_client.AppendChild(e_age)
e_client.AppendChild(e_sex)
childparent.AppendChild(e_client)
doc.AppendChild(childparent)
doc.Save("D:\mefolder\me.xml")
MsgBox("XML DOCUMENT UPDATED!", MsgBoxStyle.Information, "Notice:")
End Sub
但是,当这段代码被执行时,新数据的文件条目会覆盖现有的文件条目。
基本上,我想要的输出是这样的,例如(在浏览器中查看 XML 文档时):
<BIO_INFO>
<CLIENT> ----- EXISTING
<NAME>John</NAME>
<AGE>21</AGE>
<SEX>MALE</SEX>
</CLIENT>
<CLIENT> ----- NEW ENTRY
<NAME>Elena</NAME>
<AGE>21</AGE>
<SEX>FEMALE</SEX>
</CLIENT>
</BIO_INFO>
但这就是我得到的:
<BIO_INFO>
<CLIENT>
<NAME>Elena</NAME>
<AGE>21</AGE>
<SEX>FEMALE</SEX>
</CLIENT>
</BIO_INFO>"
这是我的声明:
Dim filer As DirectoryInfo = New DirectoryInfo("D:\mefolder")
Dim doc As New XmlDocument
Dim root As XmlElement = doc.CreateElement("CLIENT")
Dim childparent As XmlElement = doc.CreateElement("BIO_INFO")
Dim child As XmlElement = doc.CreateElement("NAME")
Dim childage As XmlElement = doc.CreateElement("AGE")
Dim childsex As XmlElement = doc.CreateElement("SEX")