Generic ASP.NET Database Functions

This is for a straight select that i need to fill a dataset
Here is what I use to fill a datatable

NOTICE: this is returning a DataTable, as that is what I need 99% of of the time, not a DataSet.

public DataTable GetDataTable(string SQL,string ConnectString)
{
    DataSet ds = new DataSet();
    SqlDataAdapter adapter = new SqlDataAdapter(SQL,ConnectString);
    adapter.Fill(ds,"DataTable");
    return ds.Tables["DataTable"];        
}

Here is what i use for Inserts and Updates

public bool Execute(string SQL, string ConnectString)
{
SqlConnection conn = new SqlConnection(ConnectString);
SqlCommand cmd = new SqlCommand(SQL,conn);
cmd.Connection.Open();
cmd.ExecuteNonQuery();
}

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