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Hello,

 

Thank you for submitting your query with ComponentArt Forum.

 

Please see the attached sample project in which the checkbox list's selected item persist when rendered. I have checked this sample using ComponentArt version 2009.3.1762.35.

 

Thanks.

 

Harish Malhotra

First of all your example does not work as there is no checkboxList control on the page.  Also, I am not attempting to use the SelectedIndex.  A checkboxList SelectedIndex is defined as:

The lowest ordinal index of the selected items in the list. The default is -1, which indicates that nothing is selected.....

I am looping the checkboxList's item collection and setting their listItem .checked = true;

Such As:

 public void SetSelectedGroups(List<string> GroupNames) {
            foreach (var g in GroupNames) {
                ListItem l = chkRoles.Items.FindByText(g);
                if (l != null)
                    l.Selected = true;
            }
        }

One thing to note is this is in a UserControl.

When stepping through the code everything is correctly persisted all the way through PreRender.  But not rendered correctly.

Again, when I remove the checkboxList from the combobox everything works fine.  Only when in the combobox does my checkbox list items not persist correctly on render.

Hello,

 

Please accept my apologies for the incorrect sample. I have attached the modified sample which now has the combo inside the Webusercontrol. I have explicitly set the item with text "third" as selected on button click.

 

Hope it helps.

 

Thanks.

 

Harish Malhotra

This appears to be a databinding issue.  I was binding my list like this:

GroupController groupData = new GroupController(SiteSettings.Instance.ConnectionString, "IBM.Data.Informix");
            var groups = groupData.GetGroups();
            groups.RemoveAll(a => a.Name.StartsWith("reserved"));
            chkRoles.DataSource = groups;
            chkRoles.DataTextField = "Name";
            chkRoles.DataBind();

Which fails to allow checking items after binding.


When I manually create my listItems like:

public void LoadGroups() {
            GroupController groupData = new GroupController(SiteSettings.Instance.ConnectionString, "IBM.Data.Informix");
            var groups = groupData.GetGroups();
            groups.RemoveAll(a => a.Name.StartsWith("reserved"));

            foreach (var g in groups) {
                chkRoles.Items.Add(new ListItem() { Text = g.Name });
            }
        }

It works...

I believe there is a bug somewhere in the comboBox because again binding either way works when not nested in a ComboBox.

Hello,

 

Thanks for getting back to me.

 

It seems when you are binding to collection then you are facing the rendering issue. In order to replicate the same I have modified the sample project in which I have bound with a simple collection of datatable and observed the rendering is working fine when I use either of the two approaches which you have mentioned.

 

Thanks.

 

Harish Malhotra

Hello harish,
If i have to update the checkbox list view combobox callback (AutocompleteTrue, renderMode=callback) 
How do I do that? 

sorry,
I've ment "runningMode=Callback" 

Hello,

I am having some issue persisting checks of the checkboxlist which is inside a combobox.

My case is little bit different from the one you have proposed in nesting_content_modified.zip in that I would like a bunch of checkboxes to be checked when the user clicks Set Index button.

To do so, I modified your code as follows:

In WebUserControl.ascx

protected void Button2_Click(object sender, EventArgs e)
    {
        // I want to check the checkboxes 2nd and 3rd
        ListItem l;
        for (int i = 2; i < 4; i++)
        {
            l = chkRoles.Items.FindByValue(i.ToString());
            if (l != null)
                l.Selected = true;
        }
    }

In WebUserControl.ascx.cs

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("Name", typeof(string));
            dt.Columns.Add("value", typeof(double));
            dt.Rows.Add(new object[] { "Jan", 1 });
            dt.Rows.Add(new object[] { "Feb", 2 });
            dt.Rows.Add(new object[] { "Mar", 3 });
            dt.Rows.Add(new object[] { "Apr", 4 });
            dt.Rows.Add(new object[] { "May", 5 });
            dt.Rows.Add(new object[] { "Jun", 6 });

            chkRoles.DataSource = dt;
            chkRoles.DataTextField = "Name";
            chkRoles.DataBind();
        }

For some reason, in this case the two checkboxes do not persist.
Any opinion/feedback is really appreciated.

Thanks

Hello,

I have gone through the code provided by and tried to replicate the issue using the latest build version 2012.1.1016.4 using your code. Further, I have modified the SetIndex Button click code and observed I am able to check a bunch of checkboxes when clicked on the SetIndex button. The code sinppet is as follows:

protected void Button2_Click(object sender, EventArgs e)

    {

        ListItem l ;

        for (int i = 2; i < 4; i++)

        {

            l = chkRoles.Items[i];

            if (l != null)

            l.Selected = true;

        } 

    }

Also I have attached the sample for your reference which exhibits the same.

Hope it helps you.

Thank you.

Harish Malhotra    

Thank you!

Thanks for posting.

 

Harish Malhotra