Add custom XML using C# VSTO addon

Question

I am very new to VSTO addon development and C# also. I'm having the below code.

using Microsoft.Office.Tools.Ribbon;
using System;
using System.Diagnostics;

namespace POC_Powerpoint
{
  public partial class Ribbon1
  {
    private void Ribbon1_Load(object sender, RibbonUIEventArgs e)
    {

    }

    private void button1_Click(object sender, RibbonControlEventArgs e)
    {
        Debug.WriteLine("POC Running");
        AddCustomXmlPartToPresentation()
    }

    private void AddCustomXmlPartToPresentation(PowerPoint.Presentation presentation)
    {
        string xmlString =
            "<?xml version=\"1.0\" encoding=\"utf-8\" ?>" +
            "<employees xmlns=\"http://schemas.microsoft.com/vsto/samples\">" +
                "<employee>" +
                    "<name>Karina Leal</name>" +
                    "<hireDate>1999-04-01</hireDate>" +
                    "<title>Manager</title>" +
                "</employee>" +
            "</employees>";

        Office.CustomXMLPart employeeXMLPart =
            presentation.CustomXMLParts.Add(xmlString, missing);
    }
 }
}

Once click the button_1 I want to add some custom xml into presentation. And I don't know how to run this code and how to get the Powerpoint and Office class parts.

I taken those code from ms-office docs. Can anyone help me with this? How can I insert the custom XML into the powerpoint file.

Answer 1

Supposing you are able to click that button, your code won't work anyway, as it is with many MS examples. You have to pass the presentation into AddCustomXmlPartToPresentation .

This can be done, by obtaining the ActiveDocument / ActivePresentation from the application instance hosting your addin.

A nice tutorial on putting it together is this one: HowTo: Create a Powerpoint AddIn in C#