Out Of Memory exception on System.Drawing.Image.FromFile()

I'm using File manager to upload images. Getting out of memory exception at:

System.Drawing.Image img = System.Drawing.Image.FromFile(fileInfo.FullName)

Stack trace:

[OutOfMemoryException: Out of memory.]
   System.Drawing.Image.FromFile(String filename, Boolean useEmbeddedColorManagement) +200
   filemanager.getFolderInfo(String path) +2651
   filemanager.ProcessRequest(HttpContext context) +574
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +814
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +132
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +73