radiobuttonlist text and values

How to save values into databse and access Text into gridview with radiobuttonlist controls.

here my code is

<b>Gender:b>
<asp:RadioButtonList ID="RdblGender" runat="server">
<asp:ListItem Text="Male" Value="M" >asp:ListItem>
<asp:ListItem Text="FeMale" Value="F" >asp:ListItem>
asp:RadioButtonList><br /><br />
<asp:Button ID="btnSave" runat="server" Text="Save" onclick="btnSave_Click" />
<asp:GridView ID="gridview1" runat="server" Width="100%" AutoGenerateColumns="false" DataKeyNames="Id"
OnRowEditing="gridview1_RowEditing"
OnRowDeleting="gridview1_RowDeleting"
OnRowUpdating="gridview1_RowUpdating"
OnRowCancelingEdit="gridview1_RowCancelingEdit"
OnRowDataBound="gridview1_RowDataBound">
<Columns>
<asp:TemplateField HeaderText="Gender">
<ItemTemplate>
<%#Eval("Gender")%>
ItemTemplate>
<EditItemTemplate>
<asp:RadioButtonList ID="rdblEditGender" runat="server">
<asp:ListItem Text="Male" Value="Male" >asp:ListItem>
<asp:ListItem Text="FeMale" Value="FeMale" >asp:ListItem>
asp:RadioButtonList>
<asp:Label ID="lblGender" runat="server" Text='<%#Eval("Gender")%>' Visible="false" />
EditItemTemplate>
asp:TemplateField>
Columns>
asp:GridView>

here radiobutton values "M","F" are stored into Databse and access gridview by Text "Male","FeMale", How?