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  • Artykuł

XmlConvert.VerifyName Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Verifies that the name is a valid name according to the W3C Extended Markup Language recommendation.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)

Syntax

'Declaration
Public Shared Function VerifyName ( _
    name As String _
) As String

public static string VerifyName(
    string name
)

Parameters

Return Value

Type: System.String
The name, if it is a valid XML name.

Exceptions

Exception Condition
XmlException

name is not a valid XML name.
ArgumentNullException

name is nulla null reference (Nothing in Visual Basic) or String.Empty.

Remarks

This method can be used with the XmlWriter class in the following manner.

 try{
   writer.WriteStartElement(XmlConvert.VerifyName("item"),"bar");
 }
 catch(Exception e)
 {
   //show error
 }

Examples

            Dim xmlString As String = _
                "<?xml version='1.0'?>" & _
                "<transactions>" & _
                   "<transaction>" & _
                      "<id>123456789</id>" & _
                      "<amount>1.00</amount>" & _
                      "<currency>USD</currency>" & _
                      "<time>2007-08-03T22:05:13-07:00</time>" & _
                   "</transaction>" & _
                "</transactions>"

            ' Create an XmlReader
            Using reader As XmlReader = XmlReader.Create(New StringReader(xmlString))
                reader.ReadToFollowing("time")
                Dim time As String = reader.ReadElementContentAsString()

                ' Read the element contents as a string and covert to DateTimeOffset type
                ' The format of time must be a subset of the W3C Recommendation for the XML dateTime type
                Dim transaction_time As DateTimeOffset = XmlConvert.ToDateTimeOffset(time)
                OutputTextBlock.Text = transaction_time.ToString()
            End Using



String xmlString =
    @"<?xml version='1.0'?>
<transactions>
   <transaction>
      <id>123456789</id>
      <amount>1.00</amount>
      <currency>USD</currency>
      <time>2007-08-03T22:05:13-07:00</time>
   </transaction>
</transactions>";

// Create an XmlReader
using (XmlReader reader = XmlReader.Create(new StringReader(xmlString)))
{
    reader.ReadToFollowing("time");
    string time = reader.ReadElementContentAsString();

    // Read the element contents as a string and covert to DateTimeOffset type
    // The format of time must be a subset of the W3C Recommendation for the XML dateTime type
    DateTimeOffset transaction_time = XmlConvert.ToDateTimeOffset(time);
    OutputTextBlock.Text = transaction_time.ToString();
}

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.