C # Custom classes that convert various objects into JSON format

This C # wrapper class can be used to convert data in various formats into JSON format, including list conversion to JSON, normal set conversion JSON, DataSet to JSON, DataTable to JSON, DataReader to JSON, etc. If you need to convert an object to JSON, you can use this class.

Using system;using system.collections.generic;using system.text;using system.data;using System.Reflection;using        System.collections;using System.data.common;namespace dotnet.utilities{//json Conversion class public class ConvertJson { #region Private Method///<summary>///filter special characters///</summary> private static string Stri            Ng2json (String s) {StringBuilder sb = new StringBuilder ();                for (int i = 0; i < s.length; i++) {char c = s.tochararray () [i]; Switch (c) {case ' \ ': SB. Append ("\\\");                    Break Case ' \ \ ': SB. Append ("\\\\");                    Break Case '/': SB. Append ("\\/");                    Break Case ' \b ': sb. Append ("\\b");                    Break Case ' \f ': sb. Append ("\\f");                    Break Case ' \N ': sb. Append ("\\n");                    Break Case ' \ R ': SB. Append ("\\r");                    Break Case ' \ t ': sb. Append ("\\t");                    Break DEFAULT:SB. Append (c);                Break }} return sb.        ToString (); }///<summary>///format character, date, Boolean//</summary> private static string Stringform At (string str, type type) {if (type = = typeof (String)) {str = String2json (st                R);            str = "\" "+ str +" \ ";            } else if (type = = typeof (DateTime)) {str = "\" "+ str +" \ ""; } else if (type = = typeof (bool)) {str = str.            ToLower (); } else if (type! = typeof (String) && string. IsNullOrEmpty (str)) {str = "\" "+ str +" \ ";            } return str; } #endregion #region List into JSON///<summary>//List to JSON///&LT;/SUMMARY&G        T            public static string listtojson<t> (Ilist<t> list) {Object obj = list[0]; return listtojson<t> (list, obj. GetType ().        Name); }///<summary>//list converted to JSON//</summary> public static string listtojson&lt ;            T> (ilist<t> list, string jsonname) {StringBuilder Json = new StringBuilder (); if (string. IsNullOrEmpty (jsonname)) Jsonname = List[0]. GetType ().            Name;            Json.append ("{\" "+ Jsonname +" \ ": ["); if (list. Count > 0) {for (int i = 0; i < list. Count;                    i++) {T obj = activator.createinstance<t> (); propertyinfo[] pi = obj. GetType ().                    GetProperties (); Json.append ("{"); for (int j = 0; J < Pi. Length; J + +) {Type type = Pi[j]. GetValue (List[i], null).                        GetType (); Json.append ("\" "+ pi[j"). Name.tostring () + "\": "+ StringFormat (Pi[j]. GetValue (List[i], null).                        ToString (), type)); if (J < Pi.                        Length-1) {json.append (",");                    }} json.append ("}"); if (I < list.                    Count-1) {json.append (",");            }}} json.append ("]}");        return json.tostring ();          Convert #endregion #region object to JSON///<summary>//object to JSON///</summary> <param name= "Jsonobject" > Objects </param>//<returns>json strings </returns> PU Blic 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 are GUID | | ObjectValue is TimeSpan) {value =                "'" + objectvalue.tostring () + "'"; } else if (ObjectValue is string) {value = "'" + ToJson (objectvalue.tost                Ring ()) + "'"; } else if (ObjectValue is IEnumerable) {value = ToJson ((IEnumerable) obje                Ctvalue);                } else {value = ToJson (objectvalue.tostring ()); } jsonstring + = "\" + ToJson (prOpertyinfo[i].            Name) + "\": "+ Value +", ";            } jsonstring.remove (Jsonstring.length-1, jsonstring.length);        return jsonstring + "}"; #endregion #region Object Collection Conversion JSON///<summary>//object collection conversion JSON//&LT;/SUMMARY&G         T <param name= "Array" > Collection object </param>//<returns>json string </returns> public static            String ToJson (IEnumerable array) {string jsonstring = "[";            foreach (object item in array) {jsonstring + = ToJson (item) + ",";            } jsonstring.remove (Jsonstring.length-1, jsonstring.length);        return jsonstring + "]"; } #endregion #region Normal collection conversion JSON///<summary>//General collection conversion JSON//&LT;/SUMMARY&G         T <param name= "Array" > Collection object </param>//<returns>json string </returns> public static String toArraystring (IEnumerable array) {string jsonstring = "["; foreach (object item in array) {jsonstring = ToJson (item.            ToString ()) + ",";            } jsonstring.remove (Jsonstring.length-1, jsonstring.length);        return jsonstring + "]"; } #endregion #region DataSet to JSON///<summary>//DataSet to JSON///</ summary>//<param name= "DataSet" >dataset object </param>///<returns>json string </returns            > public static string ToJson (DataSet DataSet) {string jsonstring = "{"; foreach (DataTable table in dataset.tables) {jsonstring + = "\" + table.            TableName + "\": "+ ToJson (table) +", ";            } jsonstring = Jsonstring.trimend (', ');        return jsonstring + "}"; } #endregion convert #region DataTable to JSON//<summary>        DataTable converted to JSON//</summary>//<param name= "table" >datatable objects </param> <returns>json string </returns> public static string ToJson (DataTable dt) {S            Tringbuilder jsonstring = new StringBuilder ();            Jsonstring.append ("["); DataRowCollection DRC = dt.            Rows; for (int i = 0; i < DRC. Count;                i++) {jsonstring.append ("{"); for (int j = 0; j < dt. Columns.count; J + +) {string strkey = dt. COLUMNS[J].                    ColumnName; String strvalue = Drc[i][j].                    ToString (); Type type = dt. COLUMNS[J].                    DataType;                    Jsonstring.append ("\" "+ strkey +" \ ":");                    strvalue = StringFormat (strvalue, type); if (J < dt.                    columns.count-1) {jsonstring.append (strvalue + ",");   }                 else {jsonstring.append (strvalue);            }} jsonstring.append ("},");            } jsonstring.remove (jsonstring.length-1, 1);            Jsonstring.append ("]");        return jsonstring.tostring (); }///<summary>//DataTable converted to JSON//</summary> public static string ToJson (D            Atatable DT, String jsonname) {StringBuilder Json = new StringBuilder (); if (string. IsNullOrEmpty (jsonname)) jsonname = dt.            TableName;            Json.append ("{\" "+ Jsonname +" \ ": ["); if (dt. Rows.Count > 0) {for (int i = 0; i < dt. Rows.Count;                    i++) {json.append ("{"); for (int j = 0; j < dt. Columns.count; J + +) {Type type = dt. ROWS[I][J].                        GetType (); Json.apPend ("\" "+ dt. COLUMNS[J]. Columnname.tostring () + "\": "+ StringFormat (dt. ROWS[I][J].                        ToString (), type)); if (J < dt.                        columns.count-1) {json.append (",");                    }} json.append ("}"); if (i < dt.                    rows.count-1) {json.append (",");            }}} json.append ("]}");        return json.tostring (); } #endregion convert #region DataReader to JSON///<summary>//DataReader to JSON// </summary>//<param name= "DataReader" >datareader object </param>//<returns>json string & lt;/returns> public static string ToJson (DbDataReader dataReader) {StringBuilder jsonstring            = new StringBuilder ();            Jsonstring.append ("["); while (DataReader.                Read ()) {Jsonstring.append ("{"); for (int i = 0; i < Datareader.fieldcount; i++) {Type type = Datareader.getfieldtype                    (i);                    String strkey = Datareader.getname (i); String strvalue = Datareader[i].                    ToString ();                    Jsonstring.append ("\" "+ strkey +" \ ":");                    strvalue = StringFormat (strvalue, type);                    if (I < datareader.fieldcount-1) {jsonstring.append (strvalue + ",");                    } else {jsonstring.append (strvalue);            }} jsonstring.append ("},");            } datareader.close ();            Jsonstring.remove (jsonstring.length-1, 1);            Jsonstring.append ("]");        return jsonstring.tostring (); } #endregion}}