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9416540
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2012-02-23T15:57:25.550
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2012-02-24T13:32:46.437
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2012-02-24T13:32:46.437
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The fastest approach is to extend the autogenerated <code>TableAdapter</code> in your <code>DataSet</code> with a method that returns your ID's as <code>List<int></code>. If you want to extend the functionality you can't change the generated classes in the DatesetName.designer.cs/vb (it will be recreated on any change) but the file without designer in its name(create it if it not exists). Then you have to extend the partial TableAdapter-class(in your case <code>menu_widac_wszystkoTableAdapter</code>). Have a look at following code to see what i mean, i haven't tested it but i hope you take my point: <pre><code>namespace YourRootNameSpace.DataSet1TableAdapters { { public partial class menu_widac_wszystkoTableAdapter { public List<int> GetIdList(int categoryID) { List<int> list = new List<int>(); System.Data.SqlClient.SqlCommand command = this.CommandCollection[0]; command.CommandTimeout = command.Connection.ConnectionTimeout; System.Data.ConnectionState previousConnectionState = command.Connection.State; try { if (((command.Connection.State & System.Data.ConnectionState.Open) != System.Data.ConnectionState.Open)) { command.Connection.Open(); } command.Parameters[ "@id" ].Value = categoryID; using (System.Data.SqlClient.SqlDataReader reader = command.ExecuteReader()) { while (reader.Read()) { list.Add(reader.GetInt32(0)); } } } finally { if ((previousConnectionState == System.Data.ConnectionState.Closed)) { command.Connection.Close(); } } return list; } } } </code></pre> Edit: After i've read your edited question i saw that i've misunderstood your requirement a little bit, but my approach should be perfect anyway. Basically you don't want to get a <code>DataTable</code> but a <code>List<int></code> with your product_ids. After you've extended the <code>TableAdapter</code> in the abovementioned way: <pre><code>var da = new DataSet1TableAdapters.menu_widac_wszystkoTableAdapter(); List<int> productIDs = da.GetIdList(); </code></pre>
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1. PODataset1 - method connection
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1. USTim Schmelter
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