Solved

How to implement exception handling in a 3 tier web app

Posted on 2011-02-10
3
391 Views
Last Modified: 2012-05-11
Hi,

I am new to the 3 tier development architecture and am looking to see what is the most common and efficient way to create error handling. Is it by creating a custom error handling object? Any help is much appreciated!
0
Comment
Question by:bschave2
3 Comments
 
LVL 18

Accepted Solution

by:
Anil Golamari earned 500 total points
ID: 34865532
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 34865607
It depends entirely on what you need to do and what you need to report to the upper tiers. Trapping exceptions where they happen is usually best, and you will of course want to log them. You can then either re-throw the exception to, for example, let your UI know something went wrong. But whether you rethrow the original exception, or a more generic custom exception type is up to you.
0
 

Author Comment

by:bschave2
ID: 34866854
How can I pass the exception back to the UIl?

well say in the UIL I call an object in the UIL

BLL customers = new BLL();
customers.GetCustomers(gvCustomers);

in the BLL method I get the gridview:

public void GetCustomers(GridView gvCustomers)
    {

        DLL getGV = new DLL();
        gvCustomers.DataSource = getGV.getDS("getCusts");
        gvCustomers.DataBind();
    }

And in the DLL i have the method as

public DataSet getDS(string ProcName, SortedList<string, string> sqlParams)
    {
        try
        {
            getCon();
            cmd = new SqlCommand(ProcName, con);

            //Looping through params.
            foreach (KeyValuePair<string, string> Param in sqlParams)
            {
                cmd.Parameters.AddWithValue(Param.Key.ToString(), Param.Value.ToString());

            }
            da = new SqlDataAdapter(cmd);
            cmd.CommandType = CommandType.StoredProcedure;
            ds = new DataSet();
            da.Fill(ds);

            closeCon();
        }
        catch (SqlException sqlex)
        {
            throw new Exception(ex.message);
        }

        return ds;
    }
0

Featured Post

Does Powershell have you tied up in knots?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question