how to know there is no required attribute for the childnode in xml file

[praveenkumar palla]

I am using an xml and in that childnodes have one attribute which is optional, so that attribute may be present or not. in front-end from c#.net 2005 i am reading that attribute, when it is not present it giving exception. so how to find that there is no attribute for that childnode in runtime. Thanks in advance PraveenKumar Palla

[Martin 0]

Hello, I think Reflection is what you are looking for. The way from the object to the Attributes would be like this.

//For searching of property Attributes
using System.Reflection;

Type t = yourObject.GetType();
foreach (PropertyInfo pi in t.GetProperties())
{
if(pi.PropertyType.Attributes & TypeAttributes.Serializable) //For excample a comparison to the Serializable Attribute.
{

}
}

//For Searching of CustomAttributes of your object.
using System.Reflection;

Type t = yourObject.GetType();
object[] AllAttributes = t.GetCustomAttributes(true); //For excample

Hope it helps! All the best, Martin

[andre_swnpl]

just test for null. eg. XmlDocument oXML = new XmlDocument(); oXML.LoadXml("<root><name id='1' value='ggg' value2='ttt'/><name id='2' value='erer'/></root>"); XmlNodeList nl = oXML.SelectNodes("//name"); foreach (XmlNode n in nl) { if (n.Attributes["value2"] != null) { //Do Something } }

[praveenkumar palla]

when the below statement is executed then only getting exception(i.e. focusing to catch()) if (n.Attributes["value2"] != null)