Pass Data Between ASP.NET Pages

 There is the data to send in current page

 　　<asp:TextBox ID="DataToSendTextBox" runat="server" Text="Hello World!"></asp:TextBox>

1.Use Query String

　　current page: Response.Redirect("QueryStringPage.aspx?Data=" + Server.UrlEncode(DataToSendTextBox.Text));

　　Redirect page: Server.UrlDecode(Request.QueryString["Data"])

2.Use HttpPost

　　current page:

　　　　<asp:Button ID="HttpPostButton" runat="server" Text="Use HttpPost"
            PostBackUrl="~/HttpPostPage.aspx" />

　　Redirect page: Request.Form["DataToSendTextBox"]

3.Use Session State

　　current page:Session["Data"] = DataToSendTextBox.Text;

　　Redirect page:Session["Data"]

4.Use Public Properties

　　current page:

 　　public string DataToSend
        {
            get
            {
                return DataToSendTextBox.Text;
            }
        }

　　Server.Transfer("PublicPropertiesPage.aspx");

　　Redirect page:PreviousPage.DataToSend

5.Use Control Info

　　current page: Server.Transfer("ControlInfoPage.aspx");

　　Redirect page: var textbox = PreviousPage.FindControl("DataToSendTextbox") as TextBox;