I need help with appending a child to xml using c#.

Question

<Root>
<PolicyHeader>
<ReceiptNo/>
</PolicyHeader>

I need to replace receipt no and make like this
<ReceiptNo>receipt value</ReceiptNo>

Answer 1

Hi @Jack_TheTechGuy ,

Please try the following solution based on LINQ to XML.

c#

void Main()  
{  
	const string ReceiptNo = "CH770";  
  
	XDocument xdoc = XDocument.Parse(@"<Root>  
			<PolicyHeader>  
				<ReceiptNo/>  
			</PolicyHeader>  
		</Root>");  
  
	XElement xElem = xdoc.Descendants("ReceiptNo").FirstOrDefault();  
	xElem.SetValue(ReceiptNo);  
	  
	Console.WriteLine(xdoc);  
}  

Output

<Root>  
  <PolicyHeader>  
    <ReceiptNo>CH770</ReceiptNo>  
  </PolicyHeader>  
</Root>