repeater with postback

Question

I have a repeater, and each item has a check box and radio button.

• the checkbox disable all the controls inside the item when checked (with auto post back)
• the radio button display a popup once checked (also with auto post back).

The case is: if there is a radio button checked in any item of the repeater, the popup will display when I check the checkbox control to disable an item. During the postback, a checked radio button will cause the popup to display.

How can I prevent this? Checkbox should only disable the item not to display the popup.

My code

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void rptr1_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {


            if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
            {
                Label lbl1 = (Label)e.Item.FindControl("lbl_dg_task");
                Label lbl2 = (Label)e.Item.FindControl("lbl_dg_seq");
                CheckBox chb = (CheckBox)e.Item.FindControl("chkb_NO");
                RadioButton l1 = (RadioButton)e.Item.FindControl("L1");
                RadioButton l2 = (RadioButton)e.Item.FindControl("L2");
                RadioButton l3 = (RadioButton)e.Item.FindControl("L3");
                RadioButton l4 = (RadioButton)e.Item.FindControl("L4");
                RadioButton r1 = (RadioButton)e.Item.FindControl("R1");
                RadioButton r2 = (RadioButton)e.Item.FindControl("R2");
                RadioButton r3 = (RadioButton)e.Item.FindControl("R3");
                RadioButton r4 = (RadioButton)e.Item.FindControl("R4");
                AjaxControlToolkit.ModalPopupExtender mpex = (AjaxControlToolkit.ModalPopupExtender)e.Item.FindControl("mpe1");

                if (l1.Checked)
                {
                    //pop.Enabled = true;
                    ModalPopupExtender1.Show();
                }


                if (chb.Checked == true)
                {

                    l1.Enabled = false;
                    l2.Enabled = false;
                    l3.Enabled = false;
                    l4.Enabled = false;
                    r1.Enabled = false;
                    r2.Enabled = false;
                    r3.Enabled = false;
                    r4.Enabled = false;
                    lbl1.CssClass = "grayedout";
                    lbl2.CssClass = "grayedout";


                }
                else
                {
                    l1.Enabled = true;
                    l2.Enabled = true;
                    l3.Enabled = true;
                    l4.Enabled = true;
                    r1.Enabled = true;
                    r2.Enabled = true;
                    r3.Enabled = true;
                    r4.Enabled = true;
                    lbl1.CssClass = "seq";
                    lbl2.CssClass = "task";


                }
            }


        }


    protected void rptr1_PreRender(object sender, EventArgs e)
    {

            foreach (RepeaterItem item in rptr1.Items)
            {
                if (item.ItemType == ListItemType.AlternatingItem || item.ItemType == ListItemType.Item)
                {
                    CheckBox chb = (CheckBox)item.FindControl("chkb_NO");
                    Label lbl1 = (Label)item.FindControl("lbl_dg_task");
                    Label lbl2 = (Label)item.FindControl("lbl_dg_seq");
                    RadioButton l1 = (RadioButton)item.FindControl("L1");
                    RadioButton l2 = (RadioButton)item.FindControl("L2");
                    RadioButton l3 = (RadioButton)item.FindControl("L3");
                    RadioButton l4 = (RadioButton)item.FindControl("L4");
                    RadioButton r1 = (RadioButton)item.FindControl("R1");
                    RadioButton r2 = (RadioButton)item.FindControl("R2");
                    RadioButton r3 = (RadioButton)item.FindControl("R3");
                    RadioButton r4 = (RadioButton)item.FindControl("R4");
                    AjaxControlToolkit.ModalPopupExtender mpex = (AjaxControlToolkit.ModalPopupExtender)item.FindControl("ModalPopupExtender1");


                    if (chb.Checked == true)
                    {
                        l1.Enabled = false;
                        l2.Enabled = false;
                        l3.Enabled = false;
                        l4.Enabled = false;
                        r1.Enabled = false;
                        r2.Enabled = false;
                        r3.Enabled = false;
                        r4.Enabled = false;
                        l1.Checked = false;
                        lbl1.CssClass = "grayedout";
                        lbl2.CssClass = "grayedout";

                    }
                    else
                    {
                        l1.Enabled = true;
                        l2.Enabled = true;
                        l3.Enabled = true;
                        l4.Enabled = true;
                        r1.Enabled = true;
                        r2.Enabled = true;
                        r3.Enabled = true;
                        r4.Enabled = true;
                        lbl1.CssClass = "seq";
                        lbl2.CssClass = "task";


                    }

                    if (l1.Checked)
                    {

                        //pop.Enabled = true;
                        ModalPopupExtender1.Show();


                    }

                }
            }
        }

Answer 1

Don't use the PreRender event to decide whether to show the popup, but use the OnCheckedChanged event of the radio button to show it.

l1.CheckedChanged = (sender, e) => { if (l1.Checked) ModalPopupExtender1.Show(); };