LinkButton click event in custom web control

Matglas

I am working on a webcontrol that contains linkbuttons and I have to act on the click event of them. Can anyone help me to do this. I can not get it to work. Matglas

Stefan Troschuetz

Matglas wrote:

I can not get it to work.

What exactly does that mean? What do you want to do when a link button is clicked? It would help if you show some code.

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Matglas

This is my code. When creating the child controls I add a linkbutton that has is linked to method viewLogLButton_Click(). But this method does not not execute. I deleted some original code because it was a lot longer.

    [ToolboxData("<{0}:ExceptionViewer runat=server />")]
    [DesignTimeVisible(true)]
    public class ExceptionViewerControl : WebControl
    {
        protected override void RenderContents(HtmlTextWriter output)
        {
            this.EnsureChildControls();
            this.RenderChildren(output);
        }
        protected override void OnInit(EventArgs e)
        {
        }
        protected override void CreateChildControls()
        {
            this.Controls.Clear();
            HtmlTable RenderTbl = LoadLogDirectory();

            this.Controls.Add(RenderTbl);
        }

        private const string mainTblId = "exViewerTbl";
        private String fileLoad = null;

        private HtmlTable _mainFileTable = new HtmlTable();
        private HtmlTable MainFileTable
        {
            get { return _mainFileTable; }
            set { _mainFileTable = value; }
        }

        private HtmlTable LoadLogDirectory(FileInfo file)
        {
            this.MainFileTable = new HtmlTable();

            LinkButton viewLogLButton = new LinkButton();
            viewLogLButton.CommandName = "ViewLogFile";
            viewLogLButton.CommandArgument = file.Name;
            viewLogLButton.Text = file.Name;
            viewLogLButton.Click += new EventHandler(viewLogLButton_Click);

            ControlCollection controls = new ControlCollection(this);
            controls.Add(viewLogLButton);

            if (fileLoad == file.Name) {
               //action 
            }

            this.MainFileTable.Rows.Add(GetHeaderRow(controls));
            return MainFileTable;
        }

        void viewLogLButton_Click(object sender, EventArgs e)
        {
            fileLoad = ((LinkButton)sender).CommandArgument;
        }

        private HtmlTableRow GetHeaderRow(ControlCollection controls)
        {
            //header cell
            HtmlTableCell headerCell = new HtmlTableCell();
            headerCell.Attributes["class"] = styleClass;
            headerCell.Attributes["colspan"] = span.ToString();
            foreach (Control ctrl in controls)
            {
                headerCell.Controls.Add(ctrl);
            }
            headerRow.Cells.Add(headerCell);

            return headerRow;
        }

Stefan Troschuetz

I'm quite sure it has something to do with dynamically adding the link button, but I do not know how to circumvent this. Try asking this in the ASP.NET forum.

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Tuwing Sabado

remove this code viewLogLButton.Click += new EventHandler(viewLogLButton_Click) from your LoadLogDirectory method then tranfer to OnInit Web Control EventHandler. Here is a sample code... protected override void OnInit(EventArgs e) { base.OnInit (e); viewLogLButton.Click += new EventHandler(viewLogLButton_Click); } regards, Mark

Matglas

Thanks I'll try it tomorrow when I am back at work. Matglas