What is difference between "throw" and "throw ex" in .Net?
Asked by Seed Infotech Ltd. - Wagholi Seed Pune Last Modified
Follow 0 
Answer 
Yes, there is a difference; 1) throw ex resets the stack trace (so your errors would appear to originate from HandleException) 2) throw doesn't - the original offender would be preserved.
2
Comments
In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e....
read more In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace read less
1
Comments
Using Throw statement you can either throw a system exception or your own custom exception
1
Comments
1.In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. 2. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace....
read more 1.In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. 2. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace read less
1
Comments
Rana Krunal
Qa mentor | sdet | istqb® | csm® | sfc™ | perfecto automation certified | recommended on urbanpro
In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. Declaration of throw try { // do some operation that can fail } catch (Exception ex) { // do some local cleanup throw; } Throw...
read more In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. Declaration of throw try { // do some operation that can fail } catch (Exception ex) { // do some local cleanup throw; } Throw ex In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace. Declaration of throw ex try { // do some operation that can fail } catch (Exception ex) { // do some local cleanup throw ex; } } read less
0
Comments
Noosheen Sharif
I can try and give my best to the student
In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e....
read more In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace. - See more at: read less
0
Comments
throw re-throws the exception that was caught, and preserves the stack trace. throw ex throws the same exception, but resets the stack trace to that method.
0
Comments
Harish Sharma
7 yrs Experience along with Microsoft Certified Technology Specialist Trainer for .Net with C# as Language
throw re-throws the exception that was caught, and preserves the stack trace. throw ex throws the same exception, but resets the stack trace to that method. I hope you will remember the difference ..
0
Comments
Yasharth Bhatt
B.Tech(C.S.)
If you use "throw" statement, it preserve original error stack information. If you use "throw ex" statement, stack trace of the exception will be replaced with a stack trace starting at the re-throw point.
0
Comments
In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw...
read more In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace. read less
0
Comments
View 23 more Answers
Related Questions
Hi,
I have asp.net project with sql connection.I want connect database with asp.net and run the project and web config file there
In web.config: <connectionStrings> <add name="ConnectionString" connectionString="Data Source=192.168.1.25;Initial Catalog=Login;Persist Security Info=True;User ID=sa;Password=example.com" providerName="System.Data.SqlClient"...
50 What Is Asp ? 
ASP.Net is a platform that is used to develope, Web, Desktop, Mobile and other kinds of applications. It supports many languages like C, C++, C#, F#, VB.Net etc. It all runs on a Integrated Development...
What are delegates in ASP.NET
Delegates are type safe function pointers or callbacks. Delegate is a class that holds a reference to a method or function. Delegate class has a signature an it can only refer those methods whose signature...
Hello Sir, I have little bit knowledge of C. Can I continue study Asp.net? Please advice..
for ASP.Net you need the basic programming knoladge in C and C++ OOP Method along with HTML,CSS, and Java Script. Because in ASP.Net Code behind C# is running. C# is based on Object oritented Methodology....
What is the difference between asp.net and vb.net?
asp.net is web technology that is used in building web applications and websites. Vb.net is language that is used in writing programs that are utilizing the asp.net framework Asp.net contains...
Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com
Ask a QuestionRelated Lessons
Why Need for Delegates in C#
.1. TYPE SAFETY FEATURES. 2. OBJECT ORIENRED FEATURES. 3. Lamda Function 4. BRING GENERICS. 1. Type safety means an object when defined has its ability to understand of its own type and maintain...
Difference Between View Bag And View Data In Mvc
ViewData belongs to dictionary class whereas view bag is the dynamic object. i.e., dictionary class create objects that validate data for viewdata whereas dynamic object validates data for ViewBag.Also,The...
Service-Level Agreement (SLA) Definition
A service-level agreement (SLA) is a contract between a service provider and its internal or external customers that documents what services the provider will furnish. SLAs originated with network service...
M
Contents Of ASP.NET
Getting Started with ASP.NET This module explains how to build and configure a simple ASP.NET application. Lessons: Introduction to ASP.NET Web Applications Features of ASP.NET Configuring ASP.NET...
ASP.NET - Introduction
ASP.NET is a web development platform, which provides a programming model, a comprehensive software infrastructure and various services required to build up robust web applications for PC, as well as mobile...
Find ASP.NET near you
Looking for ASP.NET ?
Learn from the Best Tutors on UrbanPro
Are you a Tutor or Training Institute?
Join UrbanPro Today to find students near you
