//以下三句為轉Dataset/Datatable為Json格式的一般方法。
System.Web.Script.Serialization.JavaScriptSerializer serial = new System.Web.Script.Serialization.JavaScriptSerializer();
serial.RegisterConverters(new System.Web.Script.Serialization.JavaScriptConverter[]{new Microsoft.Web.Preview.Script.Serialization.Converters.DataSetConverter(),new Microsoft.Web.Preview.Script.Serialization.Converters.DataTableConverter(),new Microsoft.Web.Preview.Script.Serialization.Converters.DataRowConverter()});
string jsonStr = serial.Serialize(ds);

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