c# - コードビハインドに異なる改行を含むasp.netテキストボックス複数行

Question

asp.netにアプリケーションがあり、texmode = "multiline"のテキストボックスコントロールを含む2つのページがあります:

最初のページ:

<asp:TextBox ID="txtQuestion" runat="server" Rows="2" Columns="20" TextMode="MultiLine"></asp:TextBox>

と

2ページ目：

<asp:TextBox ID="txtMessage" runat="server" TextMode="MultiLine"></asp:TextBox>

When I am writing user input text from these input texts, if user hits the "Enter" key, I have different result for each page for newline. For example user enters "John" and then hits "Enter" key and "Doe" I have different newline in .cs files of these 2 pages:

at 1st page in .cs file txtQuestion.text equals:

John\nDoe

at 2nd page in .cs file txtMessage.text equals:

John\r\nDoe

I don't know which causes this situation and I couldn't find any solution to get the same result from those inputs

Can anyone help?

Thanks