Read textbox from ASP.net page that repeated n times
<% System.Data.SqlClient.SqlDataReader myDReader = myDatabaseConnector.getDataFromDBAsSQLDataReader("SELECT * from students);
       while(myDReader.Read())
       { %>
           <asp:TextBox ID="txtCourseInfo" Test="" EnableViewState="false" CssClass="dataEntrySearchDataText" ReadOnly="true" runat="server"></asp:TextBox>

    <% } %>

<asp:repeater id="rptCourses" runat="server" DataSourceID="dsCourseInfo"
   <ItemTemplate>
 <asp:TextBox ID="txtCourseInfo" Text='<%#Eval("StudentName")#%>' EnableViewState="false" CssClass="dataEntrySearchDataText" ReadOnly="true" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:Repeater>

<asp:sqldatasource id="dsCourseInfo"
ConnectionString="<%$ ConnectionStrings:YourConnectionString %>"
Select Command="Select * from Students">
</asp:sqldatasource>

<ItemTemplate>
            <table runat="server" style="color: White; background-color: #3A4F63;" visible="false"
                id="headerTable">
                <tr>
                    <td colspan="3" align="center">
                        <asp:Label ID="headerTitle" runat="server"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td style="width: 200px; background-color: #3A4F63; color: White;">
                        Image
                    </td>
                    <td style="width: 200px;">
                        Studen Name
                    </td>
                    <td style="width: 200px;">
                        Birth Date
                    </td>
                </tr>
            </table>
             <table>
                <tr>
                    <td style="width: 200px;">
                        <asp:Image ID="img" runat="server" ImageUrl='<%#Eval("ImageUrl") %>'></asp:Image>
                    </td>
                    <td style="width: 200px;">
                        <asp:Label ID="lblName" runat="server" Text='<%#Eval("Name") %>'></asp:Label>
                    </td>
                    <td style="width: 200px;">
                        <asp:Label ID="lblBirthDate" runat="server" Text='<%#Eval("BirthDate") %>'></asp:Label>
                    </td>
                </tr>
            </table>
</ItemTemplate>