从网址解析json并将其存储在数据集中。 解析时遇到意外字符

Question

I am trying to Parse JSON from a url and store it in dataset.

public override void getJobsFromSource()
    {
        string url = @"https://data.usajobs.gov/api/jobs?Country=United%20States&NumberOfJobs=1&Page=1";
        DataTable dt = new DataTable();
        DataSet data = JsonConvert.DeserializeObject<DataSet>(url);

        DataSet ds = new DataSet();
        ds.Tables.Add(dt);

    }

But I get this exception:{"Unexpected character encountered while parsing value: h. Path '', line 0, position 0."} I tried it a different way:

public override void getJobsFromSource()
    {
        string url = @"https://data.usajobs.gov/api/jobs?Country=United%20States&NumberOfJobs=1&Page=1";
        DataTable dt = (DataTable)JsonConvert.DeserializeObject(url, (typeof(DataTable)));            

        DataSet ds = new DataSet();
        ds.Tables.Add(dt);

    }

And i got the same exception.What am i doing wrong?Thanks

Answer 1

You're trying to parse the URL string, not the actual json content that is at the location.

Try this :

public override void getJobsFromSource()
{
    string url = @"https://data.usajobs.gov/api/jobs?Country=United%20States&NumberOfJobs=1&Page=1";

    using(WebClient client = new WebClient()) {
        string json = client.DownloadString(url);
        [...]

    }            

}