Question

Being new to working with Data, I hope I’m asking this properly. How can I select what columns come in from a DataSet into a DataTable? I know I can fill a DataTable by using…

DataTable table = dataSet1.Tables[0];

but this brings in all the columns. How can I fill a DataTable with only certain columns?

I’m using .NET 3.5, C#, and a SQL CE 3.5 single table database.

Thanks.

Answer 1

    // Assumes that connection is a valid SqlConnection object.

string queryString = "SELECT CustomerID, CompanyName FROM dbo.Customers";
SqlDataAdapter adapter = new SqlDataAdapter(queryString, connection);

DataSet customers = new DataSet();
adapter.Fill(customers, "Customers");

DataTable table = customers.Tables[0];

Instead of “CustomerID, CompanyName” you can put the columns you want to select.

For further learning check this MSDN link.