C# Find using contains and replace exact match

Question

Thanks for your example.

Here i am finding and replace. how to replace exact work. please suggest.

xdcBrokerFiles = XDocument.Load(@f);
popUpStandardLineItem = from item in xdcBrokerFiles.Descendants().Elements("TickerBrokerLineItemMap")
                        where item.Element("Formula").Value.Contains(olditem.Trim())
                            select item;

foreach (var data in popUpStandardLineItem)
{
    data.Element("Formula").Value.Replace(olditem.Trim(),newitem.Trim());
    xdcBrokerFiles.Save(@f);
}

see this line data.Element("Formula").Value.Replace(olditem.Trim(),newitem.Trim()); where problem may occur during replace data in xml. so how to handle this kind of replace?

Thanks

Answer 1

You will need to change your code to something like this. String.Replace will replace any part of the string that matches the old value with the new value

 foreach (var data in popUpStandardLineItem)
 {
         if( data.Element("Formula").Value.Trim() == olditem.Trim())
         {
                   data.Element("Formula").Value = data.Element("Formula").Value.Replace(olditem.Trim(),newitem.Trim());
                 xdcBrokerFiles.Save(@f);
          }
 }