Sending textbox data to another page

Question

Hello all, need help please. I am having a page where I received data in my textbox from database using repeater, now I want to send this data of the textbox to another page on button click. Help please.

 

here is my code :

 

<asp:TextBox ID="txtData" runat="server" Text = '<%# Eval("ImageName") %>' ></asp:TextBox>

<asp:Button ID="SendData" runat="server" Text="Book this event" />

 

<!--  I haven't written any code for button click, because I have no idea how it works -->