public override void OnException(ExceptionContext context)
{
// 1. Exception Is handled so that Request Processing is completed
// and the result return process starts
context.ExceptionHandled = true;
// 2. Read the exception Message
string message = context.Exception.Message;
// 3. Returning result
var viewResult = new ViewResult();
// 3a. Create a ViewDataDiciotnary and define Key/Values for it
var viewData = new ViewDataDictionary(modelMetadata, context.ModelState);
dbContext.ExceptionLogs.Add(new ExceptionLog
{
ControllerName = context.RouteData.Values["controller"].ToString(),
ActionName = context.RouteData.Values["action"].ToString(),
Date = DateTime.Now,
ExceptionMesaage = message,
StackTrace = context.Exception.StackTrace
})
;
dbContext.SaveChanges();
// 3b. define keys for viewData
viewData["controller"] = context.RouteData.Values["controller"];
viewData["action"] = context.RouteData.Values["action"];
viewData["errorMessage"] = message;
viewResult.ViewName = "CustomError";
viewResult.ViewData = viewData;
context.Result = viewResult;
}
public async Task InvokeAsync(HttpContext context, VodafoneExceptionDbContext exceptiondbContext)
{
try
{
// if no exception while processing the request move to next middleware
await request(context);
}
catch (Exception ex)
{
exceptiondbContext.ExceptionLogs.Add(new ExceptionLog {
ExceptionMesaage = ex.Message, Date = DateTime.Now
});
exceptiondbContext.SaveChanges();
// logic for exception handling and generating response
await HandleErrorAndWriteResponse(context, ex);
}
}
