对象转换为Json字符串代码,CSharp代码库,德仔网

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【CSharp】对象转换为Json字符串
作者:英 / 发布于2015/3/24/ 796

	/// <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 ToJson(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 Guid || objectValue is TimeSpan)
	{
	value = "'" + objectValue.ToString() + "'";
	}
	else if(objectValue is string)
	{
	value = "'" + ToJson(objectValue.ToString()) + "'";
	}
	else if (objectValue is IEnumerable)
	{
	value = ToJson((IEnumerable)objectValue);
	}
	else
	{
	value = ToJson(objectValue.ToString());
	}
	jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";
	}
	return Json.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 ToJson(IEnumerable array)
	{
	string jsonString = "[";
	foreach (object item in array)
	{
	jsonString += Json.ToJson(item) + ",";
	}
	return Json.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 = ToJson(item.ToString()) + ",";
	}
	return Json.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 ToJson(DataTable table)
	{
	string jsonString = "[";
	DataRowCollection drc = table.Rows;
	for (int i = 0; i < drc.Count; i++)
	{
	jsonString += "{";
	foreach (DataColumn column in table.Columns)
	{
	jsonString += "\"" + ToJson(column.ColumnName) + "\":";
	if (column.DataType == typeof(DateTime) || column.DataType == typeof(string))
	{
	jsonString += "\"" + ToJson(drc[i][column.ColumnName].ToString()) + "\",";
	}
	else
	{
	jsonString += ToJson(drc[i][column.ColumnName].ToString()) + ",";
	}
	}
	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 ToJson(DbDataReader dataReader)
	{
	string jsonString = "[";
	while (dataReader.Read())
	{
	jsonString += "{";

	for (int i = 0; i < dataReader.FieldCount; i++)
	{
	jsonString += "\"" + ToJson(dataReader.GetName(i)) + "\":";
	if (dataReader.GetFieldType(i) == typeof(DateTime) || dataReader.GetFieldType(i) == typeof(string))
	{
	jsonString += "\"" + ToJson(dataReader[i].ToString()) + "\",";
	}
	else
	{
	jsonString += ToJson(dataReader[i].ToString()) + ",";
	}
	}
	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 ToJson(DataSet dataSet)
	{
	string jsonString = "{";
	foreach (DataTable table in dataSet.Tables)
	{
	jsonString += "\"" + ToJson(table.TableName) + "\":" + ToJson(table) + ",";
	}
	return jsonString = DeleteLast(jsonString) + "}";
	}
	/// <summary>
	/// String转换为Json
	/// </summary>
	/// <param name="value">String对象</param>
	/// <returns>Json字符串</returns>
	public static string ToJson(string value)
	{
	if (string.IsNullOrEmpty(value))
	{
	return string.Empty;
	}

	string temstr;
	temstr = value;
	temstr = temstr.Replace("{", "｛").Replace("}", "｝").Replace(":", "：").Replace(",", "，").Replace("[", "【").Replace("]", "】").Replace(";", "；").Replace("\n", "<br/>").Replace("\r", "");

	temstr = temstr.Replace("\t", " ");
	temstr = temstr.Replace("'", "\'");
	temstr = temstr.Replace(@"\", @"\\");
	temstr = temstr.Replace("\"", "\"\"");
	return temstr;
	}
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