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Questionasp.NET composite control cannot raise an event Pin
michal.cerbak7-Dec-12 5:50
membermichal.cerbak7-Dec-12 5:50 
I have problem with Composite Control in ASP.NET. Im making a classlibrary with this content \/ , but the problem is, that i cannot see it in toolbox, but i register it in web.config file, compile it and add a reference to it. And another problem is that my composite control cannot raise an event. 

<pre>// composite control
namespace MyCompControl
    public class CreateArticleEventArgs : EventArgs
        public bool IsValid { get; private set; }
        public Article article { get; private set; }

        public CreateArticleEventArgs(bool IsValid, Article article)
            this.IsValid = IsValid;
            this.article = article;

        public CreateArticleEventArgs(bool IsValid)
            this.IsValid = IsValid;
            this.article = null;

        Level = AspNetHostingPermissionLevel.Minimal),
        Level = AspNetHostingPermissionLevel.Minimal),
    ToolboxData("<{0}:CreateArticle runat="\""server\"> </{0}:CreateArticle>"),
    public class CreateArticleControl : Control, INamingContainer

        private Label labelHeader;
        private Label labelIntro;
        private Label labelImage;
        private Label labelImageText;
        private Label labelText;
        private Label labelFileUploadStatus;
        private TextBox textBoxHeader;
        private TextBox textBoxIntro;
        private TextBox textBoxText;
        private TextBox textBoxImageText;
        private FileUpload fileUpload;
        private Button buttonCreateArticle;

        private static readonly object EventCreateArticleKey = new object();

        //public event EventHandler<CreateArticleEventArgs> CreateArticleClicked;

        #region Create Article Event Delegate
        Description("Raised when the user clicks the button.")
        public event EventHandler CreateArticle
                Events.AddHandler(EventCreateArticleKey, value);
                Events.RemoveHandler(EventCreateArticleKey, value);

        protected override void OnInit(EventArgs e)

        protected override void OnLoad(EventArgs e)
            if (!Page.IsPostBack)

        protected override void CreateChildControls()

            // hlavicka
            labelHeader = new Label();
            labelHeader.Text = "Header:";

            textBoxHeader = new TextBox();

            // intro k clanku
            labelIntro = new Label();
            labelIntro.Text = "Intro:";

            textBoxIntro = new TextBox();

            // text clanku
            labelText = new Label();
            labelText.Text = "Text:";

            textBoxText = new TextBox();

            // upload obrazku
            labelImage = new Label();
            labelImage.Text = "Image Upload:";

            fileUpload = new FileUpload();

            labelFileUploadStatus = new Label();
            labelFileUploadStatus.Text = "";

            labelImageText = new Label();
            labelImageText.Text = "Image Subscription:";

            textBoxImageText = new TextBox();

            // vloz clanok
            buttonCreateArticle = new Button();
            buttonCreateArticle.ID = "buttonInsertArticleID";
            buttonCreateArticle.Text = "Insert Article";
            buttonCreateArticle.Click += new EventHandler(buttonCreateArticle_Click);


        protected override void Render(HtmlTextWriter writer)

        protected virtual void OnCreateArticle(CreateArticleEventArgs e)
            EventHandler SubmitHandler = (EventHandler)Events[EventCreateArticleKey];
            if (SubmitHandler != null)
                SubmitHandler(this, e);

        void buttonCreateArticle_Click(object source, EventArgs e)
            string filepath = "";
            if (fileUpload.HasFile)
                filepath = HttpContext.Current.Server.MapPath("~/pictures/") + fileUpload.FileName;

                new CreateArticleEventArgs(true, new Article()
                    Author = HttpContext.Current.User.Identity.Name,
                    CreationDate = DateTime.Now,
                    Header = textBoxHeader.Text,
                    Intro = textBoxIntro.Text,
                    Image = filepath,
                    ImageText = textBoxImageText.Text


// register it in web.config
<add tagPrefix="mycc" assembly="MyCompControl" namespace="MyCompControl" />

// create an instance
<mycc:CreateArticleControl ID="cac" runat="server"     oncreatearticle="cac_CreateArticle">        

A would be glad for any advice...
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