Tim,
>Cetin, isn't ADO for xml data? I have not delved into that before.<PMFJI ... no, ADO.NET isn't only for XML data. ADO.NET refers to anything you do with data ... that means the data store (DataSets, DataTables, etc), plus the data access. So, yes, you've used ADO.NET when you access SQL Server, VFP or any other database.
You really should look into parameterizing your database calls, as Cetin has tried to explain. But, since you want an answer using your method of building a string, it would simply be something like this:
Your way:
vDataSource2.SelectCommand = "SELECT title, type_dish FROM dish WHERE title LIKE '%'" + TextBox1.Text + "'%')"
Cetin's way:
vDataSource2.SelectCommand = String.Format("select * from myTable where title like '%{0}%'", TextBox1.Text)
Both methods will give you the same SelectCommand string.
~~Bonnie