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Thread: HiddenVariable Fields

  1. #1

    Thread Starter
    New Member
    Join Date
    Aug 2003
    Posts
    5

    HiddenVariable Fields

    I'm trying to use Hidden Variables for the first time.
    But running into a problem

    Everytime i run this code and enter my username, it tells me that the key has already been added.

    I'm just learning C# right now and actually this is a code thats almost identical to that from a book which is why im confused why it isnt working

    I work on Visual Studio .NET

    Here is the code for the html:

    <%@Page Inherits="practiceCoding.MobileWebForm1" AutoEventWireup="true" Language="c#" CodeBehind="TextBoxExample.aspx.cs" %>
    <%@Register TagPrefix="mobile" Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %>

    <mobile:Form id="Form1" runat="server">
    <mobile:Label id="Label1" runat="server">Your name</mobile:Label>
    <mobile:TextBox id="TextBoxName" runat="server"></mobile:TextBox>
    <mobile:Command id="Command1" runat="server">Submit</mobile:Command>
    </mobile:Form>
    <mobile:Form id="Form2" runat="server">
    <mobile:Label id="Label2" runat="server">Your email</mobile:Label>
    <mobile:TextBox id="TextBoxEmail" runat="server"></mobile:TextBox>
    <mobile:Command id="Command2" runat="server">Submit</mobile:Command>
    </mobile:Form>
    <mobile:Form id="Form3" runat="server">
    <mobile:TextView id="TextView1" runat="server">TextView</mobile:TextView>
    </mobile:Form>


    Here is my .cs file

    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Web;
    using System.Web.Mobile;
    using System.Web.SessionState;
    using System.Web.UI;
    using System.Web.UI.MobileControls;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;

    namespace practiceCoding
    {
    /// <summary>
    /// Summary description for MobileWebForm1.
    /// </summary>
    public class MobileWebForm1 : System.Web.UI.MobileControls.MobilePage
    {
    protected System.Web.UI.MobileControls.Form Form1;
    protected System.Web.UI.MobileControls.Form Form2;
    protected System.Web.UI.MobileControls.Form Form3;
    protected System.Web.UI.MobileControls.Label Label1;
    protected System.Web.UI.MobileControls.TextBox TextBoxName;
    protected System.Web.UI.MobileControls.Command Command1;
    protected System.Web.UI.MobileControls.Label Label2;
    protected System.Web.UI.MobileControls.TextBox TextBoxEmail;
    protected System.Web.UI.MobileControls.Command Command2;
    protected System.Web.UI.MobileControls.TextView TextView1;


    private void Page_Load(object sender, System.EventArgs e)
    {

    }

    public MobileWebForm1()
    {
    Page.Init += new System.EventHandler(Page_Init);
    }

    private void Page_Init(Object sender, EventArgs e)
    {
    HiddenVariables.Clear();
    InitializeComponent();
    }

    private void InitializeComponent()
    {
    this.Command1.Click += new System.EventHandler(this.Command1_Click);
    this.Command2.Click += new System.EventHandler(this.Command2_Click);
    this.Form3.Activate += new System.EventHandler(this.Form3_Activate);
    this.Load += new System.EventHandler(this.Page_Load);
    }

    private void Command1_Click(object sender, System.EventArgs e)
    {
    HiddenVariables.Add(TextBoxName.ID,TextBoxName.Text);
    this.ActiveForm=Form2;
    }

    private void Command2_Click(object sender, System.EventArgs e)
    {
    HiddenVariables.Add(TextBoxEmail.ID, TextBoxEmail.Text);
    this.ActiveForm=Form3;
    }

    private void Form3_Activate(Object sender, System.EventArgs e)
    {
    String FormData="";
    foreach(Object o in HiddenVariables.Keys)
    {
    FormData+=o.ToString()+" "+HiddenVariables[0]+"<br>";
    }
    TextView1.Text=FormData;
    }
    }
    }




    Here is my error
    Item has already been added. Key in dictionary: "TextBoxName" Key being added: "TextBoxName"
    The error is on line 59 which reads:

    HiddenVariables.Add(TextBoxName.ID,TextBoxName.Text);

    Thanx a lot !
    I KNOW NOTHING !!

  2. #2
    yay gay PT Exorcist's Avatar
    Join Date
    Apr 2002
    Location
    . . . my reason of shame
    Posts
    2,729
    that happens when u try to add to an hashtable a key that already exists, you can't have duplicated keys, why is it happening i dont know as right now i dont have the time to look carefully at ur code
    \m/\m/

  3. #3

    Thread Starter
    New Member
    Join Date
    Aug 2003
    Posts
    5
    Thanx, i dont think i figured out why it was happening but i found a way around it, thanx for the help
    I KNOW NOTHING !!

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