There's a cool new .net 2.0 feature I didn't know about until I needed to do this a few days ago. If your application has FullTrust, you can use the System.Data.Sql.SqlDataSourceEnumerator to get a list of available SQL servers (2000 and 2005 only). The query returns a DataTable which you can just attach to a combobox or drop down list.

 Dim instance As SqlDataSourceEnumerator =      SqlDataSourceEnumerator.Instance
 Dim dt As DataTable = instance.GetDataSources()

Remember, though, this requires the assembly to have full trust. There is not a specific permission you can apply to use this otherwise.

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