The ':' character, hexadecimal value 0x3A, cannot be included in a nameThe ':' character, hexadecimal value 0x3A, cannot be included in a name

2018-07-19

Question

_{Thursday, July 19, 2018 4:39 PM}

I'm trying to write a code to insert items in exist xml file ,I want the items in file to be like this:

<item>
  <title><![CDATA[any title]]></title>
  <link>http://any link</link>
  <pubDate>any date</pubDate>
  <guid isPermaLink="true">any link</guid>
  <description><![CDATA[any description]]></description>
        <media:credit role="author"><![CDATA[any author]]></media:credit>
  <media:category><![CDATA[any category]]></media:category>
  <media:content url="http://any link" height="266" width="127" /> 
  <media:thumbnail url="http://any link" height="266" width="127" />
</item>

so I have write this code :

Dim FilePath As String
FilePath = "C:\Users\MONZER\Desktop\Karary Web Site\WebApplication1\XMLFile1.xml"
Dim document As New XDocument
If File.Exists(FilePath) Then
document = XDocument.Load(FilePath)
Else
Label1.Text = "not done"
End If

Dim root = New XElement("item")
Dim title = New XElement("title", "<![CDATA[" & TextBox3.Text & "]]>")
Dim link = New XElement("link", TextBox6.Text)
Dim pubDate = New XElement("pubDate", DateTime.Now.ToString("yyy/MM/dd HH:mm"))
Dim description = New XElement("description", TextBox5.Text)
Dim author = New XElement("media:credit",
New XAttribute("role", "author"),
New XAttribute("><![CDATA[", TextBox5.Text + "]]>"))

root.Add(title, link, pubDate, description, author)
document.Root.Add(root)
document.Save(FilePath)
Label1.Text = "done"

End Sub

**I got this error :**The ':' character, hexadecimal value 0x3A, cannot be included in a name.

All replies (3)

_{Thursday, July 19, 2018 5:16 PM}

You can't name an element <media:cateogry> etc. The error is telling you that is not a valid character in an XML element name.

Why not simply create a <media> element and then put <category>, <content>, and <thumbnail> as child elements?

Another option would be to replace the colon with a valid character such as underscore.

Reed Kimble - "When you do things right, people won't be sure you've done anything at all"

_{Thursday, July 19, 2018 5:19 PM}

Oh sorry, those names already exist in the file. There must a namespace in use that isn't shown. You'll need to add the namespace to the document and set it on the element through an attribute.

-EDIT-

here is some guidance... though the examples are in C# it should be easy enough to understand the equivalent in VB:

/en-us/dotnet/csharp/programming-guide/concepts/linq/how-to-create-a-document-with-namespaces-linq-to-xml

Reed Kimble - "When you do things right, people won't be sure you've done anything at all"

_{Thursday, July 19, 2018 7:00 PM}

Check the next method too:

Dim d As New XmlDocument

d.Load("XMLFile1.xml")

Using w As XmlWriter = d.CreateNavigator().SelectSingleNode("/*").AppendChild()

w.WriteStartElement("item")

w.WriteElementString("title", "some title")

w.WriteStartElement("credit", "some namespace")

w.WriteAttributeString("role", "author")

w.WriteString("some author")

w.WriteEndElement()

' . . .

w.WriteEndElement()

End Using

d.Save("XMLFile1.xml")

It assumes that the root node of the existing (loaded) document already contains the corresponding definition of "media" namespace, such as:

<?xml version="1.0" encoding="utf-8"?>

<items xmlns:media="some namespace">
. . .

</items>

See the XmlWriter class for details.

שתף באמצעות

The ':' character, hexadecimal value 0x3A, cannot be included in a nameThe ':' character, hexadecimal value 0x3A, cannot be included in a name

Question

All replies (3)

משאבים נוספים