<t>[DebuggerDisplay] can be really helpful to quickly see customized output of a Type when you mouse over the instance of the Type during debugging. example:<br/>
<br/>
[DebuggerDisplay("FirstName={FirstName}, LastName={LastName}")]<br/>
class Customer<br/>
{<br/>
public string FirstName;<br/>
public string LastName;<br/>
}<br/>
<br/>
```<br/>
<br/>
This is how it should look in the debugger:<br/>
<br/>
Also, it is worth mentioning that `[WebMethod]` attribute with `CacheDuration` property set can avoid unnecessary execution of the web service method.</t>