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后台将对象转换成json格式的字符串

public StringBuilder DataSetToJson(DataSet ds)

{//把**中的数据转换成json格式的数据

StringBuilder json = new StringBuilder();

json.Append("[");

foreach (DataRow row in ds.Tables[0].Rows)

{

string id = row["id"].ToString();

string channel_id = row["channel_id"].ToString();

string title = row["title"].ToString();

string author = row["author"].ToString();

string createTime = row["createTime"].ToString(); 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　string content = row["content"].ToString();

string clickCount = row["clickCount"].ToString();

string categoryId = row["categoryId"].ToString();

string zhaiyao = row["zhaiyao"].ToString();

string img_url = row["img_url"].ToString();

string digg_good = row["digg_good"].ToString();

string digg_bad = row["digg_bad"].ToString();

string is_comment = row["is_comment"].ToString();

string is_top = row["is_top"].ToString();

string is_red = row["is_red"].ToString();

string is_hot = row["is_hot"].ToString();

string is_lock = row["is_lock"].ToString();

string is_slider = row["is_slider"].ToString();

string sort_id = row["sort_id"].ToString();

json.Append("{\"id\":" + "\"" + id + "\",");

json.Append("\"title\":" + "\"" + title + "\",");

//json.Append("\"content\":" + "\"" + content + "\",");

json.Append("\"createTime\":" + "\"" + createTime + "\",");

json.Append("\"sort_id\":" + "\"" + sort_id + "\",");

json.Append("\"categoryId\":" + "\"" + categoryId + "\",");

json.Append("\"channel_id\":" + "\"" + channel_id + "\",");

json.Append("\"pageCount\":" + "\"" + pageCount + "\",");

if (row == ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1])

{//最后一行

json.Append("\"author\":" + "\"" + author + "\"}");

}

else

{

json.Append("\"author\":" + "\"" + author + "\"},");

}

}

json.Append("]");

return json;

}