[Solved] how to pre-check checkbox when using CheckBoxes for multi-item selection

[steven]

I use <a href="http://www.telerik.com/community/code-library/aspnet-ajax/combobox/using-checkboxes-for-multi-item-selection.aspx">Using CheckBoxes for multi-item selection</a> to do a multi-item selection. but I want to pre-select some items base on a query from database.

to make myself clear, say I havea combo with there checkbox,

item1
item2
item3
item4

when page load, i want to pre-check some of these items based on which user is login, if user1 login, all items except item1 is checked, if user2 login, item1 and item4 is checked, and so on.

How to do I do that?  thanks.

[Shinu]

Hi Steven,

You can access the ComboboxItems and get the corresponding checkbox control to set Checked property accordingly. See the example shown below.

CS:

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            this.RadComboBox1.DataBind();

            string user = "user2"; // Setting the user for this example
            if (user == "user1") // Here check for user logged in
            {
                foreach (RadComboBoxItem item in RadComboBox1.Items)
                {
                    CheckBox chk = (CheckBox)item.FindControl("CheckBox");
                    if (item.Index != 0)
                    {
                        chk.Checked = true;
                    }
                }
            }
            else if (user == "user2")  // Here check for user logged in
            {
                CheckBox chk1 = (CheckBox)RadComboBox1.FindItemByText("One").FindControl("CheckBox");
                chk1.Checked = true;

                CheckBox chk2 = (CheckBox)RadComboBox1.FindItemByText("Three").FindControl("CheckBox");
                chk2.Checked = true;
            }
        }
    }

Regards,
Shinu.

[steven]

thanks, shinu, should have thought of that.