一句话轻松搞定asp.net分页_实用技巧_

 //DataTable 转换成json，这里带了“total”，传给客户端的数据总数，不传这个，客户端不会显示总数据是多少条多少条的。 public static string CreateJsonParameters(DataTable dt, bool displayCount, int totalcount) { StringBuilder JsonString = new StringBuilder(); //Exception Handling if (dt != null) { JsonString.Append("{ "); if (displayCount) { JsonString.Append("\"total\":"); JsonString.Append(totalcount); JsonString.Append(","); } JsonString.Append("\"rows\":[ "); for (int i = 0; i < dt.Rows.Count; i++) { JsonString.Append("{ "); for (int j = 0; j < dt.Columns.Count; j++) { if (j < dt.Columns.Count - 1) { //if (dt.Rows[i][j] == DBNull.Value) continue; if (dt.Columns[j].DataType == typeof(bool)) { JsonString.Append("\"" + dt.Columns[j].ColumnName + "\":" + dt.Rows[i][j].ToString().ToLower() + ","); } else if (dt.Columns[j].DataType == typeof(string)) { JsonString.Append("\"" + dt.Columns[j].ColumnName + "\":" + "\"" + dt.Rows[i][j].ToString().Replace("\"", "\\\"") + "\","); } else { JsonString.Append("\"" + dt.Columns[j].ColumnName + "\":" + "\"" + dt.Rows[i][j] + "\","); } } else if (j == dt.Columns.Count - 1) { //if (dt.Rows[i][j] == DBNull.Value) continue; if (dt.Columns[j].DataType == typeof(bool)) { JsonString.Append("\"" + dt.Columns[j].ColumnName + "\":" + dt.Rows[i][j].ToString()); } else if (dt.Columns[j].DataType == typeof(string)) { JsonString.Append("\"" + dt.Columns[j].ColumnName + "\":" + "\"" + dt.Rows[i][j].ToString().Replace("\"", "\\\"") + "\""); } else { JsonString.Append("\"" + dt.Columns[j].ColumnName+ "\":" + "\"" + dt.Rows[i][j] + "\""); } } } /*end Of String*/ if (i == dt.Rows.Count - 1) { JsonString.Append("} "); } else { JsonString.Append("}, "); } } JsonString.Append("]"); JsonString.Append("}"); return JsonString.ToString().Replace("\n", ""); } else { return null; } }