/// <summary>
/// Writes value of given column of given data row as identifier to given
/// string builder with given prefix if this value was changed.
/// </summary>
/// <param name="row">Data row to extract value.</param>
/// <param name="column">Column name to look for value.</param>
/// <param name="prefix">Prefix to write before.</param>
/// <param name="suffix">Suffix to write after.</param>
/// <param name="target">String builder to write.</param>
public static void WriteIdentifierIfChanged(DataRow row, string column, string prefix, string suffix, StringBuilder target)
{
if (row == null)
{
throw new ArgumentNullException("row");
}
if (String.IsNullOrEmpty(column))
{
throw new ArgumentException(Resources.Error_EmptyString, "column");
}
if (target == null)
{
throw new ArgumentNullException("target");
}
if (DataInterpreter.HasChanged(row, column))
{
if (!String.IsNullOrEmpty(prefix))
{
target.Append(prefix);
}
target.Append(EscapeAndQuoteIdentifier(DataInterpreter.GetString(row, column)));
if (!String.IsNullOrEmpty(suffix))
{
target.Append(suffix);
}
}
}
/// <summary>
/// Writes value of given column of given data row to given string builder with
/// given prefix if this value was changed.
/// </summary>
/// <param name="row">Data row to extract value.</param>
/// <param name="column">Column name to look for value.</param>
/// <param name="prefix">Prefix to write.</param>
/// <param name="target">String builder to write.</param>
/// <param name="suffix">Suffix to append after value.</param>
/// <param name="quote">Indicates if value should be quoted.</param>
public static void WriteIfChanged(DataRow row, string column, string prefix, StringBuilder target, string suffix, bool quote)
{
if (row == null)
{
throw new ArgumentNullException("row");
}
if (String.IsNullOrEmpty(column))
{
throw new ArgumentException(Resources.Error_EmptyString, "column");
}
if (target == null)
{
throw new ArgumentNullException("target");
}
if (DataInterpreter.HasChanged(row, column))
{
if (!String.IsNullOrEmpty(prefix))
{
target.Append(prefix);
}
WriteValue(row, column, target, quote);
if (!String.IsNullOrEmpty(suffix))
{
target.Append(suffix);
}
}
}