(.NET Core C#) Insert XML into existing XML by calling InsertChildTreeAfter

Demonstrates how to insert an XML tree or subtree into another XML document using the InsertChildTreeAfter method.

Chilkat .NET Downloads Chilkat .NET Assemblies Chilkat for .NET Core Chilkat for Mono

// Build the 1st XML document:
// <x1>
//     <a1>1</a1>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

Chilkat.Xml xml = new Chilkat.Xml();
xml.Tag = "x1";
xml.UpdateChildContent("a1","1");
xml.UpdateChildContent("a2","2");
xml.UpdateChildContent("a3","3");

// Build a 2nd XML document:

// <x2>
//   <b1>11</b1>
//   <b2>22</b2>
//   <b3>33</b3>
// </x2>

Chilkat.Xml xml2 = new Chilkat.Xml();
xml2.Tag = "x2";
xml2.UpdateChildContent("b1","11");
xml2.UpdateChildContent("b2","22");
xml2.UpdateChildContent("b3","33");

// We want to insert xml2 into xml to get this:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

// Insert xml2 after "a1"

int index = xml.TagIndex("a1");
if (index < 0) {
    Debug.WriteLine("a1 not found.");
    return;
}

xml.InsertChildTreeAfter(index,xml2);

Debug.WriteLine(xml.GetXml());

// The result is:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

// Note: xml2 now points to the subtree within xml.
// For example, update "b3" and then see how it's updated within the merged document:
xml2.UpdateChildContent("b3","33333333");

Debug.WriteLine(xml.GetXml());

// The result:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33333333</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>