在用easyui控件的时候常用到他能解析的 接送数据,我们可以通过c#将我们从数据库中得到datatable转换成那样的格式,datagrid的好转换,简单的循环拼串就可以,不过 easyui绑定树的时候的接送数据格式稍有不同,比datagrid和datagridtree得到json数据要稍微复杂一些,我写了性能虽然不是很 好的,但是也能得到想要的数据!
/// <summary> /// 根据DataTable生成Json树结构 /// </summary> /// <param name="tabel">数据源</param> /// <param name="idCol">ID列</param> /// <param name="txtCol">Text列</param> /// <param name="rela">关系字段</param> /// <param name="pId">父ID</param> StringBuilder result = new StringBuilder(); StringBuilder sb = new StringBuilder(); private void GetTreeJsonByTable(DataTable tabel, string idCol, string txtCol, string rela, object pId) { result.Append(sb.ToString()); sb.Clear(); if (tabel.Rows.Count > 0) { sb.Append("["); string filer = string.Format("{0}=‘{1}‘", rela, pId); DataRow[] rows = tabel.Select(filer); if (rows.Length > 0) { foreach (DataRow row in rows) { sb.Append("{\"id\":\"" + row[idCol] + "\",\"text\":\"" + row[txtCol] + "\",\"state\":\"open\""); if (tabel.Select(string.Format("{0}=‘{1}‘", rela, row[idCol])).Length > 0) { sb.Append(",\"children\":"); GetTreeJsonByTable(tabel, idCol, txtCol, rela, row[idCol]); result.Append(sb.ToString()); sb.Clear(); } result.Append(sb.ToString()); sb.Clear(); sb.Append("},"); } sb = sb.Remove(sb.Length - 1, 1); } sb.Append("]"); result.Append(sb.ToString()); sb.Clear(); } }
调用方法很简单,运行这个void 类型的函数,然后取result 的值就行了,
GetTreeJsonByTable(datatable, "id", "title", "pid", "0"); string content = result.ToString();
时间: 2024-10-13 11:44:34