ASP.Net How to display data from a textbox

Ok, bare bones, simple as spit webforms text box to save into a database using simple ado.net.  Bear in mind that nowadays the entity framework is the preferred way to work with a database, but that would make this simple task seem a lot more complicated.  
The web form markup

        <asp:TextBox runat="server" id="txtSaveThis"></asp:TextBox><br />
        <asp:Button runat="server" ID="btnSave" Text="Save" OnClick="btnSave_Click" />

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and the code behind

        Dim con As New System.Data.SqlClient.SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings("EETest").ConnectionString)
        con.Open()
        Dim sql As String = "INSERT INTO SaveText (Text) VALUES (@Text)"
        Dim command As New System.Data.SqlClient.SqlCommand(sql, con)
        command.Parameters.AddWithValue("@Text", txtSaveThis.Text)
        command.ExecuteNonQuery()

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If you have an issue with the ConfigurationManager you will need to add a reference to System.Configuration.