Unable to Catch Specific Exception

Question

I am serializing a XML File.During the serialization ,I am receiving general exception.It is hard trace the problem.

my code is:

try
{
string m_fileName = @"d:\Xml\Person.xml";
XmlSerializer xmlPerSerlzr = new XmlSerializer(typeof(person));
txtWrt = new StreamWriter(m_fileName);

xmlPerSerlzr.Serialize(txtWrt, person);
}
catch(Exception serExp)
{
MessageBox.Show("Exception is :" + serExp.Message.ToString());
}

Error Message :

There was an error reflecting type "Person"

My question is how can i force the CLR to emit the exact error ?

ScottS · Accepted Answer · 2009-08-17 06:10:07Z

Check the type of the exception, e.g.

serExp.GetType().ToString()

and check for an inner exception (both type and message).

That should give you some more useful info.

Michał Ziober · Accepted Answer · 2009-08-17 06:34:48Z

Use:

exc.ToString();

In Debug mode in Exception DialogBox, select View details option. Probably You don't implement 0-parameter constructor.

Ahmed · Accepted Answer · 2009-08-17 06:17:09Z

I think it is better to check also the stack trace and the inner exception.

You can use something like that

 string GetExceptionString(Exception ex) { string str = ""; while (ex != null) { str += ex.Message + "\n" + ex.StackTrace; ex = ex.InnerException; } return str; }

Noon Silk · Accepted Answer · 2009-08-17 06:15:06Z

0

Use

serExp.StackTrace

instead of

serExp.Message.ToString()

answered Aug 17, 2009 at 6:15

Noon Silk

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1 Comment

Steve Gilham Over a year ago

Better, serExp.ToString(), which does both of the above in one -- one of the cases where .ToString() is not a completely useless statement of the object type.

Svish · Accepted Answer · 2009-08-17 06:18:24Z

Set a breakpoint in the catch clause, then run in debug mode. You can then explore the exception object easier and figure out what is going on.

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