强制复选框单击事件

Question

I have a javascript function tied to the click event of each checkbox item in an asp:checkboxlist. However, there's an option whereby the user can dynamically add a new item to the list. I have already successfully done this code, the item is added, and the javascript function tied to the onclick event. However, I need to run the onclick function once from the code behind, as I add the item to the list. How can I simply run a pre existing javascript function from C# codebehind?

protected void btnAddLang_Click(object sender, EventArgs e)
{
        Healthline.ServiceRecords.DataHelper helper = new Healthline.ServiceRecords.DataHelper();
        Hashtable prms = new Hashtable();
        DataSet dsLangs = new DataSet();

        prms = new Hashtable();
        prms.Add("@LangName", txtOtherLanguages.Text);

        dsLangs = helper.RunSP("mySP", prms);

        if (dsLangs.Tables[0].Rows.Count > 0)
        {
            ListItem item = new ListItem();
            item.Value = dsLangs.Tables[0].Rows[0]["LanguageID"].ToString();
            item.Text = dsLangs.Tables[0].Rows[0]["Language"].ToString();
            chkTopLanguages.Items.Add(item);
        }

        foreach (ListItem listitem in chkTopLanguages.Items)
        {
            listitem.Attributes.Add("onclick", "GetLanguages()");
        }

        //here I need to force an immediate call to the javascript function GetLanguages()
    }

If it helps. Rather than a straight call to the javascript function, if I can force a trigger to the onclick event of the checkbox I just added, that should work as well, since the javascript function is called onclick of the checkbox item

Answer 1

I would suggest adding an argument to the function, and passing in the control. That way you can handle the onclick , and you can call the function when the page is posted back, ie when the dynamic checkbox is first rendered.