我们如何指定SOAP webservice的返回类型为JSON格式？

Question

这是我的方法，返回XML格式，但我需要返回JSON类型格式。

[WebMethod] 
public string GetAllCity(long UID, string IMEINo) 
{ 
    DataSet ds = new DataSet(); 
    ExeWeb2 cd = new ExeWeb2(); 

    DataTable dt = new DataTable(); 
    //booking 
    string qyr = ""; 
    // self booking 

    ds = cd.retData("select city_name from city order by city_name"); 
    dt = ds.Tables[0]; 
    DataSet ds1 = new DataSet(); 
    ds1.Tables.Add(dt.Copy()); 
    ds1.Tables[0].TableName = "City"; 


    System.IO.MemoryStream s = new System.IO.MemoryStream(); 
    ds1.WriteXml(s, XmlWriteMode.IgnoreSchema); 
    return System.Text.Encoding.UTF8.GetString(s.ToArray()); 
} 

Answer 1

试试这个：

DataTable dt11 = ds1.Tables[0]; 

    System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer(); 
    List<Dictionary<string, object>> rows = new List<Dictionary<string, object>>(); 


    Dictionary<string, object> row; 
    foreach (DataRow dr in dt11.Rows) 
    { 
     row = new Dictionary<string, object>(); 
     foreach (DataColumn col in dt11.Columns) 
     { 
      row.Add(col.ColumnName, dr[col]); 
     } 
     rows.Add(row); 
    } 
    return serializer.Serialize(rows);