IndexOf() public method

public IndexOf ( char c, int startIndex, int count ) : int
c char
startIndex int
count int
return int
    /// <summary>
    /// Create <see cref="NewFolding"/>s for the specified document.
    /// </summary>
    public IEnumerable<NewFolding> CreateNewFoldings(TextDocument document, out int firstErrorOffset)
    {
      firstErrorOffset = 0;
      if (document.TextLength < 1)
        return Enumerable.Empty<NewFolding>();

      try
      {
        if (document.IndexOf('<', 0, document.TextLength) < 0)
          return Enumerable.Empty<NewFolding>();
        var reader = new XmlTextReader(document.CreateReader());
        reader.XmlResolver = null; // don't resolve DTDs
        return CreateNewFoldings(document, reader, out firstErrorOffset);
      }
      catch (XmlException)
      {
        return Enumerable.Empty<NewFolding>();
      }
    }