How to escape Special character in XML

Category: ASP.NET
03 Dec 2015 09:14
Joined: 23/06/2011
Level: Gold
Points: 510
Points: 5
How to escape Special character in XML
Hi All,

I have XML data in string and tried to convert that string in to XML using
XmlDocument xl=new XmlDocument();
xl.LoadXml(mystring);

It was not parsing because my string has special character in xml element like below.

<ROOT>
<SUB>
<DATA>name < lastname</DATA>
<DATA>Myname > lastname</DATA>
<DATA>some special character in between text</DATA>
......
.....
</ROOT>
</SUB>
There were many <DATA> in my xml. It was generating dynamically.

I have tried to change < < > > but it was replacing other XML tags.

How to escape above special character without change other XML tags ?

Please help me to resolve this
#763413
03 Dec 2015 09:42
Joined: 06/04/2012
Level: Gold
Points: 4135
Points: 3
Hello Rajan,

You can use this code :

VB :

Private Function ReplaceXmlText(ByVal strXmlText As String) As String
Dim strXml As String
strXml = Replace(strXmlText, "&", "&")
strXml = Replace(strXml, "'", "'")
strXml = Replace(strXml, """", """)
strXml = Replace(strXml, ">", ">")
strXml = Replace(strXml, "<", "<")
ReplaceXmlText = strXml
End Function

Example :

<DATA>" + ReplaceXmlText(">") + "</DATA>

C# :

private string ReplaceXmlText(string strXmlText)
{
string strXml = null;
strXml = Strings.Replace(strXmlText, "&", "&");
strXml = Strings.Replace(strXml, "'", "'");
strXml = Strings.Replace(strXml, "\"", """);
strXml = Strings.Replace(strXml, ">", ">");
strXml = Strings.Replace(strXml, "<", "<");
return strXml;
}

Example :
<DATA>" + ReplaceXmlText("<") + "</DATA>

Hope this will be helpful for you.
Regards,
Nirav Lalan
DNS Gold Member
"Failure is the path of least persistence"
#763414
03 Dec 2015 09:51
Joined: 05/06/2009
Level: Gold
Points: 10218
Points: 2
you can use the following for escape for you xml

< is replaced with <
> is replaced with >
By Nathan
Direction is important than speed
#763530
11 Dec 2015 10:01
Joined: 13/06/2007
Level: Gold
Points: 20603

Points: 3
Have you tried to use .Save() method of XMLDocument class, after using 'loadXml()' method
but before that be sure to keep at least one root element
see below snippet
string szData = "<root><data>Appple<data><data>Mango<data></root>";
XmlDocument xl=new XmlDocument();
xl.LoadXml(mystring);
xl.Save("D:\\test.xml");

hope it helps
Thanks
Koolprasd2003
Editor, DotNetSpider MVM
Microsoft MVP 2014 [ASP.NET/IIS]

Joined:	23/06/2011
Level:	Gold
Points:	510

Joined:	06/04/2012
Level:	Gold
Points:	4135

Joined:	05/06/2009
Level:	Gold
Points:	10218

Joined:	13/06/2007
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Points:	20603

How to escape Special character in XML

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