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使用 C# REST API 在 PowerPoint 中创建饼图

本文将指导您如何使用 C# REST API 在 PowerPoint 中创建饼图。您将学习如何使用基于 .NET 的 Cloud SDK 在 PowerPoint 中使用 C# RESTful 服务制作饼图。所有步骤都在示例代码中执行，并附有描述性注释。

先决条件

使用基于 C# .NET 的 API 在 PowerPoint 中制作饼图的步骤

  1. 使用 SlidesApi 类使用 ID 和 KEY 初始化 API 客户端
  2. 读取本地演示文件并上传至云存储
  3. 通过定义其位置、大小和类型来创建饼图以进行配置
  4. 向图表添加标签并为图表创建一系列数据点
  5. 将系列添加到图表中，并使用 CreateShape() 方法将此图表添加到加载的演示文稿中的目标幻灯片中
  6. 将演示文稿下载到本地文件

这些步骤描述如何使用 C# RESTful 服务在 PowerPoint 中制作饼图。实例化图表对象、配置其属性、添加类别并创建数据点系列以添加到饼图。最后，将饼图添加到演示文稿中的目标幻灯片中并保存到本地磁盘。

使用 C# RESTful 服务在 PowerPoint 中添加饼图的代码

using SlidesCloud.SDK; // Importing the SDK for managing presentations
using SlidesCloud.SDK.Model; // Importing models used for creating and manipulating presentation components
using System;
using System.IO;
namespace PresentationManager // Custom namespace for this program
{
class ShapeAdder
{
static void Main(string[] args) // Main entry point of the program
{
// Initialize the API client with API key and secret
SlidesApi presentationApi = new SlidesApi("Client ID", "Secret");
// Upload the presentation file to the server
// Reads the local presentation file and uploads it to the cloud for processing
var uploadResult = presentationApi.UploadFile("SampleDeck.pptx", new MemoryStream(File.ReadAllBytes("SampleDeck.pptx")));
// Configure chart properties
// Creating a new chart object and defining its position, size, and type
Chart customChart = new Chart
{
ChartType = Chart.ChartTypeEnum.Pie, // Specifies the type of chart (Pie Chart)
X = 150, // X-coordinate of the chart's position on the slide
Y = 120, // Y-coordinate of the chart's position on the slide
Width = 450, // Width of the chart
Height = 350, // Height of the chart
Title = new ChartTitle { Text = "Pie Chart" } // Setting the chart title
};
// Adding categories (labels) to the chart
customChart.Categories = new System.Collections.Generic.List<ChartCategory>
{
new ChartCategory { Value = "Category A" }, // First category
new ChartCategory { Value = "Category B" }, // Second category
new ChartCategory { Value = "Category C" } // Third category
};
// Define data series and data points
// Creating a series of data points for the chart
OneValueSeries chartSeries = new OneValueSeries
{
IsColorVaried = true, // Allows different colors for each data point
DataPoints = new System.Collections.Generic.List<OneValueChartDataPoint>
{
new OneValueChartDataPoint { Value = 35 }, // Data point for Category A
new OneValueChartDataPoint { Value = 45 }, // Data point for Category B
new OneValueChartDataPoint { Value = 20 } // Data point for Category C
}
};
// Adding the series to the chart
customChart.Series = new System.Collections.Generic.List<Series> { chartSeries };
// Add the chart to the first slide of the presentation
Chart insertedChart = (Chart)presentationApi.CreateShape("SampleDeck.pptx", 1, customChart);
// Display the number of categories in the chart
Console.WriteLine("Number of Categories in the Chart: " + insertedChart.Categories.Count);
// Download the updated presentation file from the server
Stream updatedPresentationStream = presentationApi.DownloadFile("SampleDeck.pptx");
// Save the downloaded presentation to a local file
// Writing the downloaded stream to a new file on disk
using (var fileStream = new FileStream("UpdatedDeck.pptx", FileMode.Create, FileAccess.Write))
{
updatedPresentationStream.CopyTo(fileStream);
}
// Notify the user that the process is complete
Console.WriteLine("Updated presentation saved as 'UpdatedDeck.pptx'.");
}
}
}
view raw Create a Pie Chart in PowerPoint with C# REST API.cs hosted with ❤ by GitHub

上面的代码显示了如何使用基于 C# .NET 的 API 在 PPT 中创建饼图。您可以确保添加与图表中添加的类别数量一样多的数据集合系列。另请注意，必须在开始时加载演示文稿，否则在不上传源演示文稿的情况下执行代码时可能会出现异常。

本文教我们在演示文稿中添加饼图。要添加条形图，请参阅 使用 C# REST API 在 PowerPoint 中创建条形图 上的文章。

 

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