Uploading Dataset to WebService

Question

I've got a webservice that takes in a custom DataSet.   I've got a client that builds the dataset, utlizing the webservice's dataset classes, then calles the method to pass the dataset to the service.   However, the data is getting lost in the transmission, and I'm not sure where to look to find the error.  When the dataset leaves, there are 5 records in the dataset.  When the webservice starts to act on the parameters, there are 0 records in the dataset.  Where did they go?

WebService Code:

[WebMethod]

public bool SubmitTrackLog(MyDataSet.FixesDataTable dsFixes)

{

MyDataSetTableAdapters.FixesTableAdapter db = new MyDataSetTableAdapters.FixesTableAdapter();

int count = dsFixes.Count;  // this is always 0?!?!?!?

foreach (MyDataSet.FixesRow f in dsFixes)

{

db.Insert(f.Lat, f.Lon, f.Track, f.Speed, f.Alt, f.TimeStamp);

}

return true;

}

 
Client Code:

MyWebService.MyDataSet ds = new MyWebService.MyDataSet();

int iTmp = 0;

foreach (Fixes f in results)

{

MyWebService.MyDataSet.FixesRow row = ds.Fixes.NewFixesRow();

row.FixID = f.FixId;

row.Lat = f.Lat.Value;

row.Lon = f.Lon.Value;

row.Track = f.Track.Value;

row.Speed = f.Speed.Value;

row.Alt = f.Alt.Value;

row.TimeStamp = f.TimeStamp.Value;

ds.Fixes.AddFixesRow(row);

}

// create web service reference

MyWebService.MyTrackerSoapClient web = new MyWebService.MyTrackerSoapClient();

// send data

web.SubmitTrackLog(ds.Fixes);  // ds.Fixes contains 5 rows...

Any suggestions/comments would be appreciated.
Thanks,
-Glenn

Answer 1

Hi, is this still a problem for you?

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John Saunders | Use File->New Project to create Web Service Projects

Answer 2

fhhowdy said:

I've got a webservice that takes in a custom DataSet.   I've got a client that builds the dataset, utlizing the webservice's dataset classes, then calles the method to pass the dataset to the service.   However, the data is getting lost in the transmission, and I'm not sure where to look to find the error.  When the dataset leaves, there are 5 records in the dataset.  When the webservice starts to act on the parameters, there are 0 records in the dataset.  Where did they go?

WebService Code:

[WebMethod]

public bool SubmitTrackLog(MyDataSet.FixesDataTable dsFixes)

{

MyDataSetTableAdapters.FixesTableAdapter db = new MyDataSetTableAdapters.FixesTableAdapter();

int count = dsFixes.Count;  // this is always 0?!?!?!?

foreach (MyDataSet.FixesRow f in dsFixes)

{

db.Insert(f.Lat, f.Lon, f.Track, f.Speed, f.Alt, f.TimeStamp);

}

return true;

}

 
Client Code:

MyWebService.MyDataSet ds = new MyWebService.MyDataSet();

int iTmp = 0;

foreach (Fixes f in results)

{

MyWebService.MyDataSet.FixesRow row = ds.Fixes.NewFixesRow();

row.FixID = f.FixId;

row.Lat = f.Lat.Value;

row.Lon = f.Lon.Value;

row.Track = f.Track.Value;

row.Speed = f.Speed.Value;

row.Alt = f.Alt.Value;

row.TimeStamp = f.TimeStamp.Value;

ds.Fixes.AddFixesRow(row);

}

// create web service reference

MyWebService.MyTrackerSoapClient web = new MyWebService.MyTrackerSoapClient();

// send data

web.SubmitTrackLog(ds.Fixes);  // ds.Fixes contains 5 rows...

Any suggestions/comments would be appreciated.
Thanks,
-Glenn

You say: 
int count = dsFixes.Count;  // this is always 0?!?!?!?

Of course there are 0 records. You hadn't added them yet. You add them in the foreach loop that follows.
Also, I see form your code (web.SubmitTrackLog(ds.Fixes);  // ds.Fixes contains 5 rows...) that to the client arrive 5 records (the ones added in the foreach loop that you spoke about before). So I don't see where is the problem.

---

Lucian Baciu, MCTS, http://studentclub.ro/lucians_weblog