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https://forums.asp.net/t/1636341.aspx?why+does+web+services+do+not+support+datareader+
Jan 08, 2011 · You can use DataReader(sqldatareader,odbcdatareader,oleddatareader) to retrieve a read-only, forward-only stream of data from a database. Results are returned as the query executes, and are stored in the network buffer on the client until you request them using the Read method of the DataReader(sqldatareader,odbcdatareader,oleddatareader.)
https://www.techrepublic.com/article/which-is-best-for-you-datareader-or-dataset/
The DataSet is a better choice when building a Web service that will return the retrieved data. Since a DataSet is serializable it can serve as the return value. Since a DataReader requires a...
https://www.c-sharpcorner.com/interview-question/why-web-services-does-not-support-data-reader
SqlDatareader reads data from database on bases on live connection.You cannot return a SqlDataReader from a Web Service. This is a stream based object which cannot be serialized to cross machines boundaries over SOAP. You can use the DataSet instead.
https://www.hanselman.com/blog/ReturningDataSetsFromWebServicesIsTheSpawnOfSatanAndRepresentsAllThatIsTrulyEvilInTheWorld.aspx
Returning an object of type DataSet or Typed DataSet via publically accessible Web Service would succeed only in confusing a Java person, stymying any chance of interop, and giving them more ammo to use against .NET. To be clear, I WOULD architect a system that included DataSets if I felt that they provided an exceptional value.
https://social.msdn.microsoft.com/forums/en-US/ba05dc46-2824-4bd2-bcfb-57e5e46019a4/return-an-array-to-web-service-from-datareader
Jun 20, 2011 · Note that I was able to return the number of rows in the order, therefore everything is figured out except for how to populate the array with the OrderID as a key and return it to the Web service as a response. I suppose MyResults needs to be declared as an array. Thanks a lot for the help! RequestOrder.cs [Serializable] [DataContract]
https://bytes.com/topic/net/answers/426774-web-service-datareader
Nov 23, 2005 · better off reading the data from the SQLServer into a dataset in the web service and then then web service returning the dataset. with regards, J.V. "David Perona" wrote: Hi all, I have a web service that connects to a SQL Server database and return an sqlDataReader Object. When launch the web service in the web browser, this exception is thrown:
https://stackoverflow.com/questions/3529743/how-can-i-convert-dataset-a-to-a-datareader
You can simply iterate through the results contained in the DataSet using the Tables property of DataSet and The Rows property of DataTable. Using a DbDataReader would restrict you to forward only access to the results. The only benefit I can see from using a DbDataReader would be if you had an API call to make which required one as a parameter.
https://community.oracle.com/thread/464892
Jan 15, 2007 · Re: Fill Dataset/DataReader (C#) from StoredProcedure?? 520094 Jan 14, 2007 11:27 PM ( in response to 520094 ) Yes..!!! hm hmm Excelent.
https://stackoverflow.com/questions/16571164/how-to-return-sqldatareader-in-c-sharp-wcf
If you have only the.net Service consumers you can return DaTaSet or DataTable from the service method. You need to have SqlDataAdapter instead of sqlReader and Fill the DataTable Or Dataset and Return it. You can parace any number of columns no change in Service method definition.
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