Convert charts to images
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Charts are visually appealing and make it easy for users to see comparisons, patterns, and trends in data. For instance, rather than having to analyze several columns of worksheet numbers, you can see at a glance whether sales are falling or rising over quarterly periods, or how the actual sales compare to the projected sales.Sometimes, you do need to present the chart in your applications or web pages. You might need to insert it into a Word Document, a PDF file, a Power Point Presentation or in some other scenario. Simply you want the chart should be rendered as an image, so that you may paste it into your applications with ease. A Picture is worthwhile. Frequently, in the course of work, one has to present statistical and graphical information in an easy to understand and an easy to maintain manner.You might try Office Automation but Office automation has its own drawbacks. There are several reasons and issues involved: E.g., Security, Stability, Scalability/Speed, Price, Features etc. In Short, there are many reasons, with the top one being that Microsoft themselves strongly recommends against Office automation from software solutions: Considerations for server-side Automation of Office.There is another option which you can use to convert an Excel Chart to an image using Aspose.Cells.
Converting Chart To EMF
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Excel object
int sheetIndex = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by
//passing its sheet index
Worksheet worksheet = workbook.Worksheets[sheetIndex];
//Adding a sample value to "A1" cell
worksheet.Cells["A1"].PutValue(50);
//Adding a sample value to "A2" cell
worksheet.Cells["A2"].PutValue(100);
//Adding a sample value to "A3" cell
worksheet.Cells["A3"].PutValue(150);
//Adding a sample value to "B1" cell
worksheet.Cells["B1"].PutValue(4);
//Adding a sample value to "B2" cell
worksheet.Cells["B2"].PutValue(20);
//Adding a sample value to "B3" cell
worksheet.Cells["B3"].PutValue(50);
//Adding a chart to the worksheet
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5);
//Accessing the instance of the newly added chart
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
//Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.NSeries.Add("A1:B3", true);
//Converting chart to image.
chart.ToImage(MyDir + "Chart to EMF Image.Emf", System.Drawing.Imaging.ImageFormat.Emf);
Converting Chart To BMP
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Excel object
int sheetIndex = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by
//passing its sheet index
Worksheet worksheet = workbook.Worksheets[sheetIndex];
//Adding a sample value to "A1" cell
worksheet.Cells["A1"].PutValue(50);
//Adding a sample value to "A2" cell
worksheet.Cells["A2"].PutValue(100);
//Adding a sample value to "A3" cell
worksheet.Cells["A3"].PutValue(150);
//Adding a sample value to "B1" cell
worksheet.Cells["B1"].PutValue(4);
//Adding a sample value to "B2" cell
worksheet.Cells["B2"].PutValue(20);
//Adding a sample value to "B3" cell
worksheet.Cells["B3"].PutValue(50);
//Adding a chart to the worksheet
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5);
//Accessing the instance of the newly added chart
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
//Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.NSeries.Add("A1:B3", true);
//Converting chart to image.
chart.ToImage(MyDir + "Chart to BMP Image.Bmp", System.Drawing.Imaging.ImageFormat.Bmp);
Converting Chart to JPEG
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Excel object
int sheetIndex = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by
//passing its sheet index
Worksheet worksheet = workbook.Worksheets[sheetIndex];
//Adding a sample value to "A1" cell
worksheet.Cells["A1"].PutValue(50);
//Adding a sample value to "A2" cell
worksheet.Cells["A2"].PutValue(100);
//Adding a sample value to "A3" cell
worksheet.Cells["A3"].PutValue(150);
//Adding a sample value to "B1" cell
worksheet.Cells["B1"].PutValue(4);
//Adding a sample value to "B2" cell
worksheet.Cells["B2"].PutValue(20);
//Adding a sample value to "B3" cell
worksheet.Cells["B3"].PutValue(50);
//Adding a chart to the worksheet
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5);
//Accessing the instance of the newly added chart
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
//Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.NSeries.Add("A1:B3", true);
//Converting chart to image.
chart.ToImage(MyDir + "Chart to JPEG Image.Jpeg", System.Drawing.Imaging.ImageFormat.Jpeg);
Converting Chart to PNG
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Excel object
int sheetIndex = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by
//passing its sheet index
Worksheet worksheet = workbook.Worksheets[sheetIndex];
//Adding a sample value to "A1" cell
worksheet.Cells["A1"].PutValue(50);
//Adding a sample value to "A2" cell
worksheet.Cells["A2"].PutValue(100);
//Adding a sample value to "A3" cell
worksheet.Cells["A3"].PutValue(150);
//Adding a sample value to "B1" cell
worksheet.Cells["B1"].PutValue(4);
//Adding a sample value to "B2" cell
worksheet.Cells["B2"].PutValue(20);
//Adding a sample value to "B3" cell
worksheet.Cells["B3"].PutValue(50);
//Adding a chart to the worksheet
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5);
//Accessing the instance of the newly added chart
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
//Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.NSeries.Add("A1:B3", true);
//Converting chart to image.
chart.ToImage(MyDir + "Chart to PNG Image.Png", System.Drawing.Imaging.ImageFormat.Png);
Converting Chart To TIFF
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Excel object
int sheetIndex = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by
//passing its sheet index
Worksheet worksheet = workbook.Worksheets[sheetIndex];
//Adding a sample value to "A1" cell
worksheet.Cells["A1"].PutValue(50);
//Adding a sample value to "A2" cell
worksheet.Cells["A2"].PutValue(100);
//Adding a sample value to "A3" cell
worksheet.Cells["A3"].PutValue(150);
//Adding a sample value to "B1" cell
worksheet.Cells["B1"].PutValue(4);
//Adding a sample value to "B2" cell
worksheet.Cells["B2"].PutValue(20);
//Adding a sample value to "B3" cell
worksheet.Cells["B3"].PutValue(50);
//Adding a chart to the worksheet
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5);
//Accessing the instance of the newly added chart
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
//Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.NSeries.Add("A1:B3", true);
//Converting chart to image.
chart.ToImage(MyDir + "Chart to Tiff Image.Tiff", System.Drawing.Imaging.ImageFormat.Tiff);
Converting Chart To MultiPage TIFF
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Excel object
int sheetIndex = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by
//passing its sheet index
Worksheet worksheet = workbook.Worksheets[sheetIndex];
//Adding a sample value to "A1" cell
worksheet.Cells["A1"].PutValue(50);
//Adding a sample value to "A2" cell
worksheet.Cells["A2"].PutValue(100);
//Adding a sample value to "A3" cell
worksheet.Cells["A3"].PutValue(150);
//Adding a sample value to "B1" cell
worksheet.Cells["B1"].PutValue(4);
//Adding a sample value to "B2" cell
worksheet.Cells["B2"].PutValue(20);
//Adding a sample value to "B3" cell
worksheet.Cells["B3"].PutValue(50);
//Adding a chart to the worksheet
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5);
//Accessing the instance of the newly added chart
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
//Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.NSeries.Add("A1:B3", true);
ImageOrPrintOptions options = new ImageOrPrintOptions();
options.HorizontalResolution = 300;
options.VerticalResolution = 300;
options.TiffCompression = TiffCompression.CompressionLZW;
options.IsCellAutoFit = false;
options.ImageFormat = System.Drawing.Imaging.ImageFormat.Tiff;
options.OnePagePerSheet = true;
//Converting chart to image.
chart.ToImage(MyDir + "Chart to Tiff Image.tiff", options);