Two methods of splicing dictionary type data into key1=value1&key2=value2

1. Serialize to Json string

Use serialization when you need to convert objects to { "street": "科技园路.", "city": "江苏苏州", "country": "中国"}this format (the way that does not introduce external dlls)

        public static String SerializeObject(Object o)
        {
            System.Web.Script.Serialization.JavaScriptSerializer json = new System.Web.Script.Serialization.JavaScriptSerializer();
            String jsonString = json.Serialize(o);
            return jsonString;
        }       

Before using the above method, you have to add the reference "System.Web.Extensions", and then you have to add it in front of the classusing System.Web;

Deserialize to the specified object

JavaScriptSerializer js = new JavaScriptSerializer();
Student model = js.Deserialize< Student>(jsonStr);// //反序列化

Second, connect the string key and value to &

The two methods are similar
. Method 1:

private string dataToString(Dictionary<string,string> data)
        {
            StringBuilder sub = new StringBuilder();
            foreach (string s in data.Keys)
            {
                if (sub.Length > 0)
                {
                    sub.Append("&");
                }
                sub.Append(System.Web.HttpUtility.UrlEncode(s) + "=" + System.Web.HttpUtility.UrlEncode(data[s].ToString()));
            }
            return sub.ToString();
      }

Method 2:

private string dataToString(Dictionary<string,string> data)
{
   StringBuilder buffer = new StringBuilder();  
                int i = 0;
                foreach (string key in data.Keys)  
                {  
                    if (i > 0)  
                    {
                        buffer.AppendFormat("&{0}={1}", key, data[key]);  
                    }  
                    else  
                    {
                        buffer.AppendFormat("{0}={1}", key, data[key]);  
                    }  
                    i++;  
                }
                return buffer.ToString();
}

operation result