Returning a dataset

I am using the Atlas bits that run on the RC build. I thought that there was the capability to return a dataset. Is that working at this point? I am getting a strange error where the local WebDev.WebServer.exe is generating an error and then exiting when I attempt to call a webservice that returns a dataset. The code is pretty simple, so I have included it here just incase I am doing something stupid. I am able to step thru my code, I exit from the method, and then bang I get the error on the terminal. Thoughts? Do I need to change what I am doing? Did I just make up the thought that Datasets were working at this point?
Wally

[WebMethod]

public System.Data.DataSet ReturnDataSet()

{

DataSet ds =newDataSet();

DataTable dt =newDataTable();

DataRow dr;

dt.Columns.Add(newDataColumn("tblStateId", System.Type.GetType("System.Int32")));

dt.Columns.Add(newDataColumn("State", System.Type.GetType("System.String")));

dr = dt.NewRow();

dr["tblStateId"] = 1;

dr["State"] ="Tennessee";

dt.Rows.Add(dr);

dr = dt.NewRow();

dr["tblStateId"] = 2;

dr["State"] ="Alabama";

dt.Rows.Add(dr);

ds.Tables.Add(dt);

return (ds);

}

Interesting. This looks like a bug in Atlas. When I try your code, I get a StackOverflow exception in the serialization process.

Yes, the StackOverflow Exception is what I got also. Sorry fornot being descriptive enough last night. I was a little tired andI am getting the flu.

I suspect a bug in the DataSetConverter, which is probably caused by circular references between the DataSet and its DataTables.
What you could do for now is to return a DataTable instead (and not use a DataSet at all).

publicoverridestring Serialize(object o)
{
if (!(ois DataSet))
{
thrownew ArgumentException();
}
DataSet set1= (DataSet) o;
StringBuilder builder1=new StringBuilder();
builder1.Append('[');
bool flag1=true;
IEnumerator enumerator1= set1.Tables.GetEnumerator();
try
{
while (enumerator1.MoveNext())
{
DataTable table1= (DataTable) enumerator1.Current;
if (!flag1)
{
builder1.Append(',');
}
builder1.Append(JavaScriptObjectSerializer.Serialize(set1));
flag1=false;
}
}
finally
{
IDisposable disposable1= enumerator1as IDisposable;
if (disposable1 !=null)
{
disposable1.Dispose();
}
}
builder1.Append(']');
return builder1.ToString();
}

Variable table1 wasn't used.
Serialize(set1) rises Stack Overflow exception

Reverse AJAX?

Has anyone tried doing anything RAJAX (asyncronously send from server to client) with .NET? If so, could you point me in the direction of a reference? I need to write a small script or app that waits for messages on the server and notifies a client that a message has been received. I can't find anything out there for Microsoft technologies in regard to this, or even a set of white papers fro RAJAX.

Tim

hello.

i think that this kinf of application is also known as comet. some links that might help you:

http://en.wikipedia.org/wiki/Comet_%28programming%29

http://dojotoolkit.com/

http://dojotoolkit.com/

http://www.ajaxian.com/archives/comet-a-new-approach-to-ajax-applications