/// <summary>
/// Gets all sort expressions.
/// </summary>
/// <returns>Array of sort expressions.</returns>
public SortExpression[] GetAllSortExpressions()
{
SortExpression[] allExpressions = new SortExpression[this.Count];
for (int idxExpression = 0; idxExpression < allExpressions.Length; idxExpression++)
allExpressions[idxExpression] = GetSortExpressionAt(idxExpression);
return allExpressions;
}
/// <summary>
/// Gets sort expression at the specified index.
/// </summary>
/// <param name="index">The zero-based index of the expression to get.</param>
/// <returns>Expression at the specified index.</returns>
public SortExpression GetSortExpressionAt(int index)
{
IDbColumn field = this.columns[index] as IDbColumn;
string columnName = (field == null) ? this.columns[index] as string : null;
string dir = (string)this.directions[index];
bool ascending = (dir == "ASC");
SortExpression expression = new SortExpression(field, columnName, ascending);
return expression;
}
