Sample Code to Add Pictures in a Worksheet using Aspose.Cells for Cloud

//sepcify App SID
AsposeApp.AppSID = "77******-1***-4***-a***-80**********";
//sepcify App Key
AsposeApp.AppKey = "********************************";
 
//build URI
string strURI = "http://api.aspose.com/v1.1/cells/Sample.xlsx/worksheets/Sheet1/pictures?upperLeftRow=5&upperLeftColumn=5&lowerRightRow=20&lowerRightColumn=20&picturePath=Dock.jpg";
 
//sign URI
string signedURI = Utils.Sign(strURI);
 
Stream responseStream = Utils.ProcessCommand(signedURI, "PUT");
 
//build URI
strURI = "http://api.aspose.com/v1.1/storage/file/Sample.xlsx";
 
//sign URI
signedURI = Utils.Sign(strURI);
 
responseStream = Utils.ProcessCommand(signedURI, "GET");
using (Stream fileStream = System.IO.File.OpenWrite(@"Sample.xlsx"))
{
    Utils.CopyStream(responseStream, fileStream);
}
responseStream.Close();
 
/// <summary>
/// Copies the contents of input to output. Doesn't close either stream.
/// </summary>
public static void CopyStream(Stream input, Stream output)
{
try
{
byte[] buffer = new byte[8 * 1024];
int len;
while ((len = input.Read(buffer, 0, buffer.Length)) > 0)
{
output.Write(buffer, 0, len);
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}