how can I convert this snippet to c#-please help

[Reza]

How can I change the following code to the equivalent in C#



Public Class EventSink : Implements IListEventSink

Public Sub OnEvent(ByVal listEvent As Microsoft.SharePoint.SPListEvent)
Implements Microsoft.SharePoint.IListEventSink.OnEvent

On Error Resume Next

.........

End Class 'EventSink

End class




thanks for your time

 

[Tom Porterfield]

How can I change the following code to the equivalent in C#



Public Class EventSink : Implements IListEventSink

Public Sub OnEvent(ByVal listEvent As Microsoft.SharePoint.SPListEvent)
Implements Microsoft.SharePoint.IListEventSink.OnEvent

On Error Resume Next

.........

End Class 'EventSink

End class

C# has no On Error Resume Next. Rather it has structured error handling
through the use of try/catch/finally. But basically the C# code would
look like:

class EventSink : Microsoft.Sharepoint.IListEventSink
{
public void OnEvent(Microsoft.SharePoint.SPListEvent listEvent)
{
...
}
}

 

[spmm#]

Doesn't On Error Resume Next mean: "when I encounter an error, just
continue, pretending the error never happened"??

Wouldn't this be done in C# by catching the error without throwing it?? Like
this:

class EventSink : Microsoft.Sharepoint.IListEventSink
{
public void OnEvent(Microsoft.SharePoint.SPListEvent listEvent)
{
try
{
...
}
catch
{
//do nothing with the caught error
}
}
}

 

[Scot McDermid]

<top posting continued>
Seems to me that to recreate an "On Error Resume Next" in C#
you would surround each and every line [that could produce an exception]
with a try/catch block
that is:
try { one statement; } catch (Exception e) { // do nothing)
try { next statement; } catch (Exception e) { // do nothing }

 

[Tom Porterfield]

<top posting continued>
Seems to me that to recreate an "On Error Resume Next" in C#
you would surround each and every line [that could produce an exception]
with a try/catch block
that is:
try { one statement; } catch (Exception e) { // do nothing)
try { next statement; } catch (Exception e) { // do nothing }

Exactly. On Error Resume Next means to continue processing no matter
which line of code generates the error. To reproduce that exact
behavior in C# you would have to try every line of code and do nothing
with the caught exception. You could shorten your coding slightly by
using a parameterless catch. Ex:

int x = 0;
try {int y = 1/x;}catch{}
try {Console.WriteLine("{0}", 1/x);}catch{}
try {Console.WriteLine("this is painful");}catch{}

When you see it that way it augments how it is almost always bad idea to
use On Error Resume Next in VB.

 

[David Anton]

(Didn't you post this somewhere else?)
Our VB.NET to C# converter, Instant C#, gives:

public class EventSink : IListEventSink
{

void
Microsoft.SharePoint.IListEventSink.OnEvent(Microsoft.SharePoint.SPListEvent
listEvent)
{
OnEvent(listEvent);
}
public void OnEvent(Microsoft.SharePoint.SPListEvent listEvent)
{

//TODO: INSTANT C# TODO TASK: The 'On Error Resume Next' statement is
not converted by Instant C#:
On Error Resume Next

.........;

}

Note that it is highly impractical to convert "On Error Resume Next".
As the others have indicated, you would need try/catch around every
line within the scope of the On Error Resume Next.

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