本文指导如何使用 C# REST API 在 PowerPoint 中创建条形图。您将学习如何使用基于 .NET 的 Cloud SDK 通过 C# RESTful 服务在 PowerPoint 中创建条形图。它包含有关添加图表和设置数据的完整信息。
先决条件
下载 Aspose.Slides Cloud SDK for Dotnet to add a chart
使用上述 SDK 设置 C# 项目以处理演示文稿中的图表
使用基于 C# .NET 的 API 在 PowerPoint 中添加柱形图的步骤
- 使用客户端 ID 和密钥初始化 SlidesApi 以添加图表
- 将演示文件上传至云端
- 使用Chart类创建新的图表配置对象并设置图表类型
- 添加图表标题并初始化图表的类别
- 初始化图表的数据系列，创建数据系列，并添加第一个数据系列
- 如果需要，为图表初始化更多数据系列
- 使用 CreateShape() 方法将图表添加到演示文稿的第一张幻灯片，并根据需要下载
这些步骤描述如何使用基于 C# .NET 的 API 在 PowerPoint 中创建条形图。创建 SlidesApi 对象，上传演示文稿，创建 Chart 对象，设置图表类型、位置、维度、标题、类别和所需数据系列。将数据系列添加到图表中，并将图表添加到第一张幻灯片中。
使用 C# REST 接口在 PowerPoint 中创建条形图的代码
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| using Aspose.Slides.Cloud.Sdk; | |
| using Aspose.Slides.Cloud.Sdk.Model; | |
| using System; | |
| using System.IO; | |
| namespace AsposeTestCodes | |
| { | |
| class Program | |
| { | |
| static void Main(string[] args) // For adding a custom shape to a presentation | |
| { | |
| // Initialize the Slides API using client ID and secret key | |
| SlidesApi slidesApi = new SlidesApi("Client ID", "Secret"); | |
| // Upload the presentation file to the cloud | |
| var uploadResponse = slidesApi.UploadFile("MyPresentation.pptx", new MemoryStream(File.ReadAllBytes("MyPresentation.pptx"))); | |
| // Create a new chart configuration object | |
| Chart chartConfig = new Chart(); | |
| // Define chart type as a stacked bar chart | |
| chartConfig.ChartType = Chart.ChartTypeEnum.StackedBar; | |
| // Set the position and dimensions of the chart on the slide | |
| chartConfig.X = 150; // Horizontal position (pixels) | |
| chartConfig.Y = 150; // Vertical position (pixels) | |
| chartConfig.Width = 500; // Chart width (pixels) | |
| chartConfig.Height = 350; // Chart height (pixels) | |
| // Add a title to the chart | |
| chartConfig.Title = new ChartTitle { Text = "Bar Chart Example" }; | |
| // Initialize categories (x-axis labels) for the chart | |
| chartConfig.Categories = new System.Collections.Generic.List<ChartCategory>(); | |
| chartConfig.Categories.Add(new ChartCategory { Value = "Group A" }); // First category | |
| chartConfig.Categories.Add(new ChartCategory { Value = "Group B" }); // Second category | |
| chartConfig.Categories.Add(new ChartCategory { Value = "Group C" }); // Third category | |
| chartConfig.Categories.Add(new ChartCategory { Value = "Group D" }); // Fourth category | |
| // Initialize data series for the chart | |
| chartConfig.Series = new System.Collections.Generic.List<Series>(); | |
| // Create the first data series | |
| OneValueSeries firstSeries = new OneValueSeries(); | |
| firstSeries.DataPoints = new System.Collections.Generic.List<OneValueChartDataPoint>(); | |
| firstSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 15 }); // Value for Group A | |
| firstSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 40 }); // Value for Group B | |
| firstSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 25 }); // Value for Group C | |
| firstSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 10 }); // Value for Group D | |
| // Add the first data series to the chart | |
| chartConfig.Series.Add(firstSeries); | |
| // Create the second data series | |
| OneValueSeries secondSeries = new OneValueSeries(); | |
| secondSeries.DataPoints = new System.Collections.Generic.List<OneValueChartDataPoint>(); | |
| secondSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 35 }); // Value for Group A | |
| secondSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 20 }); // Value for Group B | |
| secondSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 45 }); // Value for Group C | |
| secondSeries.DataPoints.Add(new OneValueChartDataPoint { Value = 15 }); // Value for Group D | |
| // Add the second data series to the chart | |
| chartConfig.Series.Add(secondSeries); | |
| // Add the chart to the first slide of the presentation | |
| Chart createdChart = (Chart)slidesApi.CreateShape("MyPresentation.pptx", 1, chartConfig); | |
| // Print the number of categories in the chart to the console | |
| Console.WriteLine(createdChart.Categories.Count); | |
| // Download the modified presentation from the cloud | |
| Stream stream = slidesApi.DownloadFile("MyPresentation.pptx"); | |
| // Save the downloaded file to the local system | |
| var fs = new FileStream("Downloaded.pptx", FileMode.Create, FileAccess.Write); | |
| stream.CopyTo(fs); // Copy the stream data to the local file | |
| } | |
| } | |
| } |
此代码演示了如何使用 C# 低代码 API 在 PowerPoint 中制作条形图的过程。您可以使用图表对象中的 ChartTypeEnum 和其他参数（包括 ShowDataLabelsOverMaximum、BackWall、SideWall、Floor 和 Legend 等）设置不同的图表类型，例如 ClusteredColumn、Column3D、ClusteredCone 和 Line 等。
这篇文章教我们如何在 PowerPoint 中创建条形图。要将 HTML 转换为 PowerPoint，请参阅 使用 NET REST API 将 HTML 转换为 PowerPoint 上的文章。
