[DotNetDevelopment] Remove last character from Stringbuilder single entry

[Benj Nunez]

Hello everyone,

I'm stumped at the moment trying to figure out how to remove a quote
(",") character from a single entry within a Stringbuilder object. I
have code that looks like this:


public bool parseEntries(ref BackgroundWorker worker,
                                  ref List<StringHolder> ACVMEntries,
                                  ref DoWorkEventArgs e)
{
   ...
  if (ACVMEntries != null)
  {
       ..
      foreach (StringHolder shEntry in ACVMEntries)
      {
           string CVMEntry = shEntry.shType.ToLower().Trim();
           ...

           if (CVMEntry == someConst.foo1)
           {
                 StringBuilderBin1.Append(shEntry.shOldIDNumber).Append
(",");
           }
           else if  (CVMEntry == someConst.foo2)
           {
                 StringBuilderBin2.Append(shEntry.shOldIDNumber).Append
(",");
           }
           ...  // and so on...
      }  // of foreach

      // Remove extraneous comma at the end of each StringBuilder.
      ...
     StringBuilder1 = Utils.clearTrailingComma(ref StringBuilder1);
     StringBuilder2 = Utils.clearTrailingComma(ref StringBuilder2);
     ...

}

The implementation of clearTrailingComma() looks like this:


        public static StringBuilder clearTrailingComma(ref
StringBuilder ABuilder)
        {
            StringBuilder TmpBuilder = ABuilder;

            if ( (TmpBuilder != null) || (TmpBuilder.Length > 0) )
            {
                // Remove last quote
                if (TmpBuilder[TmpBuilder.Length - 1].ToString
().EndsWith(","))
                {
                    // Remove just one character at the end of the
string.
                    try
                    {
                        TmpBuilder.Remove(TmpBuilder.Length - 1,
1);   // Problem here***
                    }
                    catch (System.ArgumentOutOfRangeException)
                    {
                        throw;
                    }
                    catch (System.Exception)
                    {
                        throw;
                    }
                }
            }

            return TmpBuilder;
        }



My issue is with a call to this line:


TmpBuilder.Remove(TmpBuilder.Length - 1, 1);   // Problem here***


This line can handle several entries within the Stringbuilder object,
but it *cannot* remove
the "," character when there is only *one* and only *one* entry. How
can this be?


Any advice?