C# Passing Comma Seperated Stored Procedure Paramter

I came across passing a very long comma seperated string as a Stored Procedure Parameter. There is character limit on SqlParameter, that is one. The second thing I didn't want to pass individual string as parameters and calling same Stored Procedure for each string. That would have been clear and present performance hit. So I wrote following piece of code to avoid this situation. Break large string into small strings that can be accepted by SqlParameter.

string tmpMatterSpaceNames = string.Empty;
int lowerLimit = Constants.SqlParamCharLimit - 200;
StringCollection objStrCollection = new StringCollection();
foreach (string matterSpaceName in objNV.AllKeys)
{
tmpMatterSpaceNames += "'" + matterSpaceName + "',";
if (tmpMatterSpaceNames.Length > lowerLimit)
{ 
  tmpMatterSpaceNames = Regex.Replace(tmpMatterSpaceNames, @",$", "");
 objStrCollection.Add(tmpMatterSpaceNames);
 tmpMatterSpaceNames = string.Empty;
}   
}
if (tmpMatterSpaceNames != string.Empty)
{
tmpMatterSpaceNames = Regex.Replace(tmpMatterSpaceNames, @",$", "");
objStrCollection.Add(tmpMatterSpaceNames);
}

foreach (string matterSpaceNames in objStrCollection)
objMSDao.UpdateSourceCreatedFlag (matterSpaceNames, true);