how to add and catch event of linkbutton inside the gridview by dynamically

Question

5.00/5 (1 vote)

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XML

<asp:GridView ID="grid_planningStaff" runat="server" AutoGenerateColumns="false"
                CssClass="table_style01 table100" BorderWidth="3px" ForeColor="Black" OnRowCommand="grid_planning_OnRowCommand" OnRowDataBound="grid_planning_RowdataBound">
                <Columns>
                </Columns>
            </asp:GridView>

C#

protected void grid_planning_RowdataBound(object sender, GridViewRowEventArgs e)
    {
        try
        {
            if (e.Row.RowType != DataControlRowType.Header)
            {

                DataSet ds = new DataSet();
                planningStaffCommon.StaffID = sid;
                ds = objDALPlanningModule.GetStaffMeetingData(planningStaffCommon);
                if (ds.Tables[0].Rows.Count > 0)
                {
                    for (int J = 0; J < ds.Tables[0].Rows.Count; J++)
                    {
                        dateofcell = Convert.ToString(ds.Tables[0].Rows[J]["FromDate"]);
                        from = Convert.ToInt16(ds.Tables[0].Rows[J]["datea"]);
                        string clientids = Convert.ToString(ds.Tables[0].Rows[J]["MeetingType"]);
                        colorvalue = Convert.ToInt32(ds.Tables[0].Rows[J]["ColorValues"]);
                        //set Color
                        if (colorvalue == 1)
                        {
                            //DataSet dscolor = new DataSet();
                            //objDALPlanningModule._dtLOVDescription=clientids;
                            //dscolor=objDALPlanningModule.GetParaMeterDetailsDAL();
                            //if (dscolor.Tables[0] != null)
                            //{
                            //    setcolor = Convert.ToString(dscolor.Tables[0].Rows[0]["Value"]);
                            //}
                            //else
                            //{ 
                            //break
                            //}

                            if (clientids == "Test Value1")
                            {
                                setcolor = "GREEN";
                            }
                            else
                                if (clientids == "Testy Value2")
                                {
                                    setcolor = "ORANGE";
                                }
                                else
                                {
                                    setcolor = "RED";
                                }
                        }
                        else
                        {
                            setcolor = "Aqua";
                        }


                        //color and fill clients 
                        for (int i = from; i <= from; i++)
                        {
                            LinkButton lkBtn = new LinkButton();
                            lkBtn.ForeColor = Color.Black;
                            lkBtn.Font.Underline = false;
                            lkBtn.ID = "link_button" + i;
                            lkBtn.Text = clientids;
                            lkBtn.CommandArgument = "link_button"+i;
                            lkBtn.CommandName = "Edit";
                            lkBtn. önClientClick = "Edit";
                            HiddenField hdndate = new HiddenField();
                            hdndate.ID = "hdn" + i;
                            hdndate.Value = dateofcell;
                            e.Row.Cells[i].Controls.Add(hdndate);
                            e.Row.Cells[i].BackColor = Color.FromName(setcolor);
                            e.Row.Cells[i].Controls.Add(lkBtn);
                        }
                    }

                }
                //hide other extra created rows
                for (int i = 1; i < grid_planningStaff.Rows.Count; i++)
                {
                    grid_planningStaff.Rows[0].Visible = true;
                    grid_planningStaff.Rows[i].Visible = false;

                }
            }
        }
        catch (Exception)
        {

            throw;
        }


    }
    

    protected void grid_planning_OnRowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "Edit")
        {
            for (int i = 1; i < 32; i++)
            {
                HiddenField hdn = (HiddenField)grid_planningStaff.FindControl("hdn" + i);
                //LinkButton lnkdate = (LinkButton)grid_planningStaff.FindControl("hdn"+i);
                txt_fromDate.Text = hdn.Value;
            }
        }
    }

Posted 26-Aug-14 23:38pm

ganew

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Sinisa Hajnal · Answer 1 · 2014-08-27T00:20:00

Solution 1

The solution is to add the following under lkBtn. onClientClick = "Edit"; line:

lnk.Click += new EventHandler(lnk_Click);

Also, somewhere within the class you need the function named lnk_Click with handler signature like this

protected void lnk_Click(object sender, System.EventArgs e) {
// handle your click event

LinkButton lnk = (LinkButton)sender;

// here goes your code
DoSomething(lnk.CommandArgument);
}

I'm VB.Net guy so maybe there will be minor syntax errors, but this is the general idea.

Posted 27-Aug-14 0:20am

Sinisa Hajnal

Comments

ganew 27-Aug-14 6:38am

Thank you sinisa hajnal for ans my question but its not working
link button cant catch any event,
i also use the debugging but click on link button page will be redirect on it

Sinisa Hajnal 27-Aug-14 7:25am

What does OnClientClick function Edit do? Maybe you have some redirect there? If you want to use server side event, client side should only do validation or confirmation, not editing or postbacks.

Also, put a breakpoint on the line and make sure the code that adds the event executes.

Sinisa Hajnal 28-Aug-14 9:47am

Did you resolve this?

ganew 31-Aug-14 2:28am

yes
using hyperlink ,send the id to that page
if i want to use link button or other i want use ITemplate interface class in my code
because event cant catch dynamically