在C# WebAPI中处理异常通常可以通过以下方法:
try { // code that may throw an exception } catch (Exception ex) { return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "An error occurred: " + ex.Message); } public class CustomExceptionFilter : ExceptionFilterAttribute { public override void OnException(HttpActionExecutedContext context) { var response = new HttpResponseMessage(HttpStatusCode.InternalServerError) { Content = new StringContent("An error occurred: " + context.Exception.Message), ReasonPhrase = "Internal Server Error" }; context.Response = response; } } public class Startup { public void Configuration(IAppBuilder app) { app.UseExceptionHandler(errorApp => { errorApp.Run(async context => { var ex = context.Error; context.Response.StatusCode = (int)HttpStatusCode.InternalServerError; context.Response.ContentType = "text/plain"; await context.Response.WriteAsync("An error occurred: " + ex.Message); }); }); } } 这些方法可以帮助您在C# WebAPI中有效地处理异常,根据具体需求选择合适的方式来处理异常。