ASP.NET not recognizing dataset and data adapter

Question

My ASP.NET web application is not recognizing DataSet and DataAdapter. Which namespace is required to create a new DataSet?

Are you saying you don't know what namespaces to include with the "using" directive? — Steven Sudit
– Steven Sudit, Commented Sep 11, 2009 at 4:06

Muhammad Akhtar · Accepted Answer · 2009-09-11 04:06:33Z

6

Namespace

using System.Data;

OR Directly

System.Data.DataSet ds = new System.Data.DataSet();

answered Sep 11, 2009 at 4:06

Muhammad Akhtar

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Comments

Andrew Hare · Accepted Answer · 2009-09-11 04:07:49Z

2

Well, you are going to need to reference System.Data.dll and here are the two types you are looking for with their fully-qualified names:

System.Data.DataSet
System.Data.Common.DataAdapter

So add these using statements at the top of your file:

using System.Data;
using System.Data.Common;

answered Sep 11, 2009 at 4:07

Andrew Hare

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Jay Riggs · Accepted Answer · 2009-09-11 04:12:25Z

2

System.Data

For a typed DataSet, you can check the typed DataSet file's (.XSD file) .CS/.VB file; it will show the namespace.

edited Sep 11, 2009 at 4:12

answered Sep 11, 2009 at 4:07

Jay Riggs

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KV Prajapati · Accepted Answer · 2009-09-11 04:08:58Z

1

DataSet class belongs to System.Data namespace.

For provider classes use one of the following namespace,

System.Data.OleDB******, System.Data.SqlClient, **System.Data.Odbc, System.Data.OracleClient or vendor specific namespace.

answered Sep 11, 2009 at 4:08

KV Prajapati

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Abhishek · Accepted Answer · 2009-09-11 05:27:08Z

1

just import system.data and imports system.data.oledb

in c# replace imports by using.

answered Sep 11, 2009 at 5:27

Abhishek

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