DataKey()

System.Data.DataKey.DataKey ( DataColumn[] columns, bool copyColumns )

inlinepackage

Definition at line 13 of file DataKey.cs.

    {
        if (columns == null)
        {
            throw ExceptionBuilder.ArgumentNull("columns");
        }
        if (columns.Length == 0)
        {
            throw ExceptionBuilder.KeyNoColumns();
        }
        if (columns.Length > 32)
        {
            throw ExceptionBuilder.KeyTooManyColumns(32);
        }
        for (int i = 0; i < columns.Length; i++)
        {
            if (columns[i] == null)
            {
                throw ExceptionBuilder.ArgumentNull("column");
            }
        }
        for (int j = 0; j < columns.Length; j++)
        {
            for (int k = 0; k < j; k++)
            {
                if (columns[j] == columns[k])
                {
                    throw ExceptionBuilder.KeyDuplicateColumns(columns[j].ColumnName);
                }
            }
        }
        if (copyColumns)
        {
            _columns = new DataColumn[columns.Length];
            for (int l = 0; l < columns.Length; l++)
            {
                _columns[l] = columns[l];
            }
        }
        else
        {
            _columns = columns;
        }
        CheckState();
    }

References System.Data.DataKey._columns, System.Data.ExceptionBuilder.ArgumentNull(), System.Data.DataKey.CheckState(), System.Data.ExceptionBuilder.KeyDuplicateColumns(), System.Data.ExceptionBuilder.KeyNoColumns(), and System.Data.ExceptionBuilder.KeyTooManyColumns().