ToJson转换类

 

偷习别人的一个ToJson转换类，转载之，以备日后参考，谢谢原作者。

using System; using System.Reflection; using System.Collections; using System.Data; using System.Data.Common; /// <summary> /// Json转换工具 /// 作者：吴奇凡 /// 用于转换基本的对象 /// </summary> public class FxJson { private FxJson() { } /// <summary> /// 对象转换为Json字符串 /// </summary> /// <param name="jsonObject">对象</param> /// <returns>Json字符串</returns> public static string ToJsonAll(object jsonObject) { string jsonString = "{"; PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties(); for (int i = 0; i < propertyInfo.Length; i++) { object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null); string value = string.Empty; if (objectValue is DateTime || objectValue is string || objectValue is Guid || objectValue is TimeSpan) { value = "'" + objectValue + "'"; } else if (objectValue is IEnumerable) { value = ToString((IEnumerable)objectValue); } else { value = objectValue.ToString(); } jsonString += "/"" + propertyInfo[i].Name + "/":" + value + ","; } return FxJson.DeleteLast(jsonString) + "}"; } /// <summary> /// 对象集合转换Json /// </summary> /// <param name="array">集合对象</param> /// <returns>Json字符串</returns> public static string ToString(IEnumerable array) { string jsonString = "["; foreach (object item in array) { jsonString += FxJson.ToJsonAll(item) + ","; } return FxJson.DeleteLast(jsonString) + "]"; } /// <summary> /// 普通集合转换Json /// </summary> /// <param name="array">集合对象</param> /// <returns>Json字符串</returns> public static string ToArrayString(IEnumerable array) { string jsonString = "["; foreach (object item in array) { jsonString = item+","; } return FxJson.DeleteLast(jsonString) + "]"; } /// <summary> /// 删除结尾字符 /// </summary> /// <param name="str">需要删除的字符</param> /// <returns>完成后的字符串</returns> private static string DeleteLast(string str) { if (str.Length > 1) { return str.Substring(0, str.Length - 1); } return str; } /// <summary> /// Datatable转换为Json /// </summary> /// <param name="table">Datatable对象</param> /// <returns>Json字符串</returns> public static string ToString(DataTable table) { string jsonString = "["; DataRowCollection drc = table.Rows; for (int i = 0; i < drc.Count; i++) { jsonString += "{"; foreach (DataColumn column in table.Columns) { jsonString += "/"" + column.ColumnName + "/":"; if (column.DataType == typeof(DateTime) || column.DataType== typeof( string)) { jsonString += "/"" + drc[i][column.ColumnName] + "/","; } else { jsonString += drc[i][column.ColumnName] + ","; } } jsonString = DeleteLast(jsonString) + "},"; } return DeleteLast(jsonString) + "]"; } /// <summary> /// DataReader转换为Json /// </summary> /// <param name="dataReader">DataReader对象</param> /// <returns>Json字符串</returns> public static string ToString(DbDataReader dataReader) { string jsonString = "["; while (dataReader.Read()) { jsonString += "{"; for (int i = 0; i < dataReader.FieldCount; i++) { jsonString += "/"" + dataReader.GetName(i) + "/":"; if (dataReader.GetFieldType(i) == typeof(DateTime) || dataReader.GetFieldType(i) == typeof(string)) { jsonString += "/"" + dataReader[i] + "/","; } else { jsonString += dataReader[i] + ","; } } jsonString = DeleteLast(jsonString) + "}"; } dataReader.Close(); return DeleteLast(jsonString) + "]"; } /// <summary> /// DataSet转换为Json /// </summary> /// <param name="dataSet">DataSet对象</param> /// <returns>Json字符串</returns> public static string ToString(DataSet dataSet) { string jsonString = "{"; foreach (DataTable table in dataSet.Tables) { jsonString += "/"" + table.TableName + "/":" + ToString(table) + ","; } return jsonString = DeleteLast(jsonString) + "}"; } }