Set Background Picture of a Worksheet in VSTO and Aspose.Cells
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To apply a background image to a spreadsheet:
- Create a workbook and access the sheet you want to apply a background image to.
- Apply the background image.
- Save the workbook.
The code samples that follow show how to do this first with VSTO, using either C# or Visual Basic, and then with Aspose.Cells for .NET, again using either C# or Visual Basic.
The code examples in this article create a worksheet with a repeating background image, like the one in the screentshot below.
A background has been set for the worksheet.
VSTO
//Instantiate the Application object.
Excel.Application ExcelApp = Application;
//Add a Workbook.
Excel.Workbook objBook = ExcelApp.Workbooks.Add(System.Reflection.Missing.Value);
//Get the First sheet.
Excel.Worksheet objSheet = (Excel.Worksheet)objBook.Sheets["Sheet1"];
//Set a background picture for the sheet.
objSheet.SetBackgroundPicture("pic.jpeg");
//Save the excel file.
objBook.SaveCopyAs("BackgroundPicBook.xls");
//Quit the Application.
ExcelApp.Quit();
Aspose.Cells
//Instantiate a new Workbook.
Workbook workbook = new Workbook();
//Get the first worksheet.
Worksheet sheet = workbook.Worksheets[0];
//Define a string variable to store the image path.
string ImageUrl = "pic.jpeg";
//Get the picture into the streams.
FileStream fs = File.OpenRead(ImageUrl);
//Define a byte array.
byte[] imageData = new Byte[fs.Length];
//Obtain the picture into the array of bytes from streams.
fs.Read(imageData, 0, imageData.Length);
//Close the stream.
fs.Close();
//Set the background image for the sheet.
sheet.SetBackground(imageData);
//Save the excel file.
workbook.Save("BackgroundPicBook.xls");