user controll can't access property which define in ascx page.

See more:

C#

hi..

i have create one user controll for map driving direction.
and in this controll i have declared to property like fromaddress and toaddress but problem is i can't access this property in may aspx.cs page
my code is here..

<pre lang="c#">
<script runat="server">
    private Unit width, height;
    private string fromAddress, toAddress;
    private string mapElementID = string.Empty;
    private bool autoLoad = true;
    
    //Api Key related
    private string apikey = string.Empty;
    const string apikey_localhost = "ABQIAAAAn3Z0cRcS4vYvtWFgxDT-XxQJG1Plr3ELCWOTj1GK3462JN6umRRq3gfzRVjeS1XDH3ssgRa4stz-uA";
    const string api_include = "http://www.google.com/jsapi?key={0}" ;

    public bool AutoLoad
    {
        get { return autoLoad; }
        set { autoLoad = value; }
    }

    public string APIKey
    {
        get { return apikey; }
        set { apikey = value; }
    }
    
    
    public string MapElementID
    {
        get { return mapElementID; }
        set { mapElementID = value; }
    }
    
    public Unit Width
    {
        get { return width; }
        set { width = value; Directions.Style[HtmlTextWriterStyle.Width] = width.ToString(); }    
    }

    public Unit Height
    {
        get { return height; }
        set { height = value; Directions.Style[HtmlTextWriterStyle.Height] = height.ToString(); }
    }

    public string FromAddress
    {
        get { return fromAddress; }
        set { fromAddress = value; }
    }

    public string ToAddress
    {
        get { return toAddress; }
        set { toAddress = value; }
    }
    
    protected override void OnPreRender(EventArgs e)
    {
        string apiURL = null;
        if (Request.Url.IsLoopback)
            apiURL = string.Format(api_include, apikey_localhost);
        else
        {
            if (apikey.Length > 0) //if an api key is specified
                apiURL = string.Format(api_include, apikey);
            else
            {
                Directions.InnerHtml = "You need to specifiy a Google API key for this host: " + Request.Url.Host;
            }
        }
        
        if (apiURL != null)
        {
            Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "API_KEY_REFERENCE", apiURL);

            //if (toAddress.Length > 0 && fromAddress.Length > 0) //We can render directions
            //   Page.ClientScript.RegisterStartupScript(this.GetType(), "DD_LOAD", "_nco_dd.loadDirections();", true);
            
        }
            
        base.OnPreRender(e);
    }
    
</script>
<div  runat="server" id="Directions">
GoogleMaps Driving Directions<br />
No api key is needed for running it on localhost.<br />
But you will need an api key for the production URL.<br />
You may obtain a key from code.google.com<br />
</div>

<script type="text/javascript">
//<![CDATA[
    
    function _nco_gdir()
    {
        this.fromAddress = "<%=fromAddress%>";
        this.toAddress = "<%=toAddress%>";
        this.mapElementID = "<%=mapElementID%>";
        this.autoLoad = "<%=autoLoad.ToString().ToLower() %>";
        this.directions = null;
        var self = this; //don't ask
        google.load("maps","2"); //load version 2 of GoogleMaps API

        this.handleErrors = function()
        {
            
            if(self.divMap) self.divMap.innerHTML = "";
            if (self.directions && self.directions.getStatus().code == G_GEO_UNKNOWN_ADDRESS)
            {
                alert("Driving directions are not available for the address you entered.\nThis may be because the from address is relatively new, or it may be incorrect.");                
            }
            else
            {
                alert("We are currently unable to display directions for the specified addresses.");
            }
        };
                
        this.loadDirections = function()
        {
            if(!self.directions)
            {
                if(self.mapElementID.length>0)
                {
                    self.divMap = document.getElementById(self.mapElementID);
                    
                    if(self.divMap!=null)
                    {
                        self.dirMap = new google.maps.Map2(self.divMap);
                        self.dirMap.addControl(new google.maps.LargeMapControl());					    
                        self.dirMap.addControl(new google.maps.ScaleControl());        
                    }
                    else
                        self.dirMap = null;
                }
                
                self.dirpanel = document.getElementById("<%=Directions.ClientID%>");
                self.directions = new google.maps.Directions(self.dirMap, self.dirpanel);
                google.maps.Event.addListener(self.directions, "error", self.handleErrors);
            }
            
            //Clear Directions, if any
            self.dirpanel.innerHTML = "";

            //if(this.divMap!=null)
               // this.divMap.innerHTML = "Loading Map... Please wait";
            
            var ft = "from: " +  self.fromAddress + " to: " + self.toAddress;
                
            self.directions.load(ft);
            
        };
        
        if(this.fromAddress.length>0 && this.toAddress.length>0 && this.autoLoad)
            google.setOnLoadCallback(this.loadDirections); //The google way to register to window.onload
    }
    
    _nco_dd = new _nco_gdir();
            
//
</script>     

And my aspx.cs error is here user controll name is "gdirections"

gdirections.FromAddress = fromAddress;//i can not able to access FromAddress
gdirections.ToAddress = toAddress;//i can not able to access ToAddress
gdirections.AutoLoad = true; //load directions automatically