This article demonstrates how to replace text within a PowerPoint document or a particular PowerPoint slide using the TextApi interface provided by Spire.Cloud.PowerPoint.

Replace text within a PowerPoint document

using Spire.Cloud.Powerpoint.Sdk.Api;
using Spire.Cloud.Powerpoint.Sdk.Client;

namespace ReplaceText
{
    class Program
    {
        static string appId = "APP ID";
        static string appKey = "APP Key";
        static string baseUrl = "https://api.cloudxdocs.com";
        //Create a Configuration instance based on your AppID and AppKey
        static Configuration configuration = new Configuration(appId, appKey, baseUrl);
        //Create a TextApi instance
        static TextApi textApi = new TextApi(configuration);
        static void Main(string[] args)
        {
            //Specify the input document
            string name = "template.pptx";
            //Specify the text that you want to replace
            string oldValue = "Spire.Presentation";
            //Specify the desired text
            string newValue = "New String";
            //Specify ignoreCase
            bool ignoreCase = true;
            //Specify the password used to open the document, and it's "null" if nothing
            string password = null;
            //Specify the folder storing the input document, and it's "null" if nothing
            string folder = "input";
            //Use the 2G storage provided by E-iceblue, and it's "null" by default
            string storage = null;

            //Call ReplacePresentationText method to replace text within the document
            textApi.ReplacePresentationText(name, oldValue, newValue, ignoreCase, password, folder, storage);
        }
    }
}

Replace text within a particular PowerPoint slide

using Spire.Cloud.Powerpoint.Sdk.Api;
using Spire.Cloud.Powerpoint.Sdk.Client;

namespace ReplaceText
{
    class Program
    {
        static string appId = "APP ID";
        static string appKey = "APP Key";
        static string baseUrl = "https://api.cloudxdocs.com";
        //Create a Configuration instance based on your AppID and AppKey
        static Configuration configuration = new Configuration(appId, appKey, baseUrl);
        //Create a TextApi instance
        static TextApi textApi = new TextApi(configuration);
        static void Main(string[] args)
        {
            //Specify the input document
            string name = "template.pptx";
            //Specify the slide index
            int slideIndex = 0;
            //Specify the text that you want to replace
            string oldValue = "Spire.Presentation";
            //Specify the desired text
            string newValue = "New String";
            //Specify ignoreCase
            bool ignoreCase = true;
            //Specify the password used to open the document, and it's "null" if nothing
            string password = null;
            //Specify the folder storing the input document, and it's "null" if nothing
            string folder = "input";
            //Use the 2G storage provided by E-iceblue, and it's "null" by default
            string storage = null;

            //Call ReplaceSlideText method to replace text within the slide
            textApi.ReplaceSlideText(name, slideIndex, oldValue, newValue, ignoreCase, password, folder, storage);
        }
    }
}