134 Array.Clear(sortColumns, i, 1);
135 }
136 }
137
138 return String.Join(",", sortColumns).Replace(",,", ",").TrimStart(",".ToCharArray());
139
140 }
141 /**////
142 /// 获取当前的表达式对所选列进行排序
143 ///
144 protected void SearchSortExpression(string[] sortColumns, string sortColumn, out string sortOrder, out int sortOrderNo)
145 {
146 sortOrder = "";
147 sortOrderNo = -1;
148 for (int i = 0; i < sortColumns.Length; i++)
149 {
150 if (sortColumns[i].StartsWith(sortColumn))
151 {
152 sortOrderNo = i + 1;
153 if (AllowMultiColumnSorting)
154 {
155 sortOrder = sortColumns[i].Substring(sortColumn.Length).Trim();
156 }
157 else
158 {
159 sortOrder = ((SortDirection == SortDirection.Ascending) ? "ASC" : "DESC");
160 }
161 }
162 }
做人要厚道，请注明转自酷网动力(www.ASPCOOL.COM)。