Operation on ppt

Question

I am developing  a project operate ppt files , in C#,generate a ppt directly after processing the data.But when I
am add the charts, i can only add the chart frame, I need to input data then the chart can be correct. How to add chart to excel with data without input?
This is my code:
private void chartButton_Click(object sender, EventArgs e)
string path = pptPathTextBox.Text;
OpenPPT(path);
//Add a new slide
int count = presentation.Slides.Count;
presentation.Slides.Add(count + 1, PPT.PpSlideLayout.ppLayoutBlank);
//Add a pie chart
slide = presentation.Slides[count + 1];
Graph.Chart aChart = (Graph.Chart)slide.Shapes.AddOLEObject(150, 150, 480, 320,"MSGraph.Chart.8", "", MsoTriState.msoFalse, "", 0, "",MsoTriState.msoFalse).OLEFormat.Object;
aChart.ChartType = Graph.XlChartType.xl3DPie;
aChart.Legend.Position = Graph.XlLegendPosition.xlLegendPositionBottom;
aChart.HasTitle = true;
aChart.ChartTitle.Text = "It is a pie chart";

Answer 1

Try to use this
Excel library, it can generate and edit many kinds of charts, add charts to powerpoint code here:
private void btnRun_Click(object sender, EventArgs e)
//create PPT document
Presentation presentation = new Presentation();
//set background Image
string ImageFile = "bg.png";
RectangleF rect2 = new RectangleF(0, 0, presentation.SlideSize.Size.Width, presentation.SlideSize.Size.Height);
presentation.Slides[0].Shapes.AppendEmbedImage(ShapeType.Rectangle, ImageFile, rect2);
presentation.Slides[0].Shapes[0].Line.FillFormat.SolidFillColor.Color = Color.FloralWhite;
//insert chart
RectangleF rect = new RectangleF(presentation.SlideSize.Size.Width / 2 - 200, 100, 400, 400);
IChart chart = presentation.Slides[0].Shapes.AppendChart(Spire.Presentation.Charts.ChartType.Cylinder3DClustered, rect);
//add chart Title
chart.ChartTitle.TextProperties.Text = "Report";
chart.ChartTitle.TextProperties.IsCentered = true;
chart.ChartTitle.Height = 30;
chart.HasTitle = true;
//load data from XML file to datatable
DataTable dataTable = LoadData();
//load data from datatable to chart
InitChartData(chart, dataTable);
chart.Series.SeriesLabel = chart.ChartData["B1", "D1"];
chart.Categories.CategoryLabels = chart.ChartData["A2", "A7"];
chart.Series[0].Values = chart.ChartData["B2", "B7"];
chart.Series[0].Fill.FillType = FillFormatType.Solid;
chart.Series[0].Fill.SolidColor.KnownColor = KnownColors.Brown;
chart.Series[1].Values = chart.ChartData["C2", "C7"];
chart.Series[1].Fill.FillType = FillFormatType.Solid;
chart.Series[1].Fill.SolidColor.KnownColor = KnownColors.Green;
chart.Series[2].Values = chart.ChartData["D2", "D7"];
chart.Series[2].Fill.FillType = FillFormatType.Solid;
chart.Series[2].Fill.SolidColor.KnownColor = KnownColors.Orange;
//set the 3D rotation
chart.RotationThreeD.XDegree = 10;
chart.RotationThreeD.YDegree = 10;
//save the document
presentation.SaveToFile("chart.pptx", FileFormat.Pptx2010);
System.Diagnostics.Process.Start("chart.pptx");
//function to load data from XML file to DataTable
private DataTable LoadData()
DataSet ds = new DataSet();
ds.ReadXmlSchema("data-schema.xml");
ds.ReadXml("data.xml");
return ds.Tables[0];
//function to load data from DataTable to IChart
private void InitChartData(IChart chart, DataTable dataTable)
for (int c = 0; c < dataTable.Columns.Count; c++)
chart.ChartData[0, c].Text = dataTable.Columns[c].Caption;
for (int r = 0; r < dataTable.Rows.Count; r++)
object[] data = dataTable.Rows[r].ItemArray;
for (int c = 0; c < data.Length; c++)
chart.ChartData[r + 1, c].Value = data[c];