很久沒寫部落格了~~今天看見論壇裡面有朋友在問table動態增加行的問題,剛好之前有寫個幾個方法,其中Json這個最簡單,所以想寫出來,但DataTable跟Json轉換的這個類是個基礎類,所以我單獨拿出來,分享給大家,呵呵!有什麼不對的地方,歡迎指正!上程式碼吧:

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data; using System.Text.RegularExpressions; using System.Collections; using System.Text; namespace Public { /// <summary> /// JsonAndDateTable 的摘要說明 /// </summary> public static class JsonAndDateTable { /// <summary> /// 根據Json返回DateTable,JSON資料格式如: /// {table:[{column1:1,column2:2,column3:3},{column1:1,column2:2,column3:3}]} /// </summary> /// <param name="strJson">Json字串</param> /// <returns></returns> public static DataTable JsonToDataTable(string strJson) { //取出表名 Regex rg = new Regex(@"(?<={)[^:]+(?=:/[)", RegexOptions.IgnoreCase); string strName = rg.Match(strJson).Value; DataTable tb = null; //去除表名 strJson = strJson.Substring(strJson.IndexOf("[") + 1); strJson =strJson.Substring(0, strJson.IndexOf("]")); //獲取資料 rg = new Regex(@"(?<={)[^}]+(?=})"); MatchCollection mc = rg.Matches(strJson); for (int i = 0; i < mc.Count; i++) { string strRow = mc[i].Value; string[] strRows = strRow.Split(','); //建立表 if (tb == null) { tb = new DataTable(); tb.TableName = strName; foreach (string str in strRows) { DataColumn dc = new DataColumn(); string[] strCell = str.Split(':'); dc.ColumnName = strCell[0].ToString(); tb.Columns.Add(dc); } tb.AcceptChanges(); } //增加內容 DataRow dr = tb.NewRow(); for (int r = 0; r < strRows.Length; r++) { dr[r] = strRows[r].Split(':')[1].Trim().Replace("，", ",").Replace("：", ":").Replace("/"", ""); } tb.Rows.Add(dr); tb.AcceptChanges(); } return tb; } /// <summary> /// 根據DataTable返回JSON資料格式如: /// {table:[{column1:1,column2:2,column3:3},{column1:1,column2:2,column3:3}]} /// </summary> /// <param name="tb">需要轉換的表</param> /// <returns></returns> public static string DateTableToJson(DataTable tb) { if (tb == null || tb.Rows.Count == 0) { return ""; } string strName = "table"; /* string strName = tb.TableName; if (strName.Trim().Length == 0) { strName = "table"; }*/ StringBuilder sbJson = new StringBuilder(); sbJson.Append("{"); sbJson.Append("/"" + strName + "/":["); Hashtable htColumns = new Hashtable(); for (int i = 0; i < tb.Columns.Count; i++) { htColumns.Add(i, tb.Columns[i].ColumnName.Trim()); } for (int j = 0; j < tb.Rows.Count; j++) { if (j != 0) { sbJson.Append(","); } sbJson.Append("{"); for (int c = 0; c < tb.Columns.Count; c++) { sbJson.Append(htColumns[c].ToString() + ":/"" + tb.Rows[j][c].ToString().Replace(",", "，").Replace(":", "：").Replace("/r/n", " ") + "/","); } sbJson.Append("index:" + j.ToString()); //序號 sbJson.Append("}"); } sbJson.Append("]}"); return sbJson.ToString(); } } }

好了,寫完了,轉換隻限兩種格式相互轉換,不能轉換其它不規則程式碼啊~~呵呵,不好意思