CODEWITHSUNDEEP
c#.netwinformsuser-interfacecheckbox
Aishwarya Shiva
Aishwarya Shiva

Reputation: 3416

Dynamically added CheckBoxes to a CheckBoxList not showing Text

Following is my code for adding CheckBoxes dynamically to a CheckBoxList:

foreach (WCore.CategoryFields cat in Global.getCategories())
{
        CheckBox c = new CheckBox();
        c.Text = cat.CategoryId;
        c.Tag = cat.CategoryName;
        if (ints != null)
        {
            if (ints.Contains(c.Tag))
               Invoke(new Action(()=>checkedListBox1.Items.Add(c, true)));
            else
               Invoke(new Action(()=>checkedListBox1.Items.Add(c, false)));
        }
        else
            Invoke(new Action(()=>checkedListBox1.Items.Add(c, false)));
}

The problem is that whenever I run this code, the checkboxes are added but not with the text. Like this: enter image description here

I tried to debug it and then I found that CheckBox instance 'c' is getting Text but not showing it.

See here: enter image description here

Please tell me what's wrong going on in this code?

UPDATE

Please note that I can't use it like this:

Invoke(new Action(()=>checkedListBox1.Controls.Add(c)));

because its better to use panel instead of CheckBoxList then. Also I want two values one shown as text and other hidden as value for each CheckBox in CheckBoxList

UPDATE 2

Code to get selected items:

List<string> SelInts = new List<string>();
foreach (ListBoxItem c in checkedListBox1.SelectedItems)
{
        SelInts.Add(c.Tag.ToString());
}

Upvotes: 3

Views: 4821

Answers (3)

Antonio Garcia
Antonio Garcia

Reputation: 1

hope this helps u can do only declare the listitem and set the name and value

     ListItem item = new ListItem();
     item.Text = "text on checkbox";
     item.Value = "Value of checkbox";
     item.Enabled = true;
    // add to the current checkbox list that u using 
     
     CheckBoxList1.Items.Add(item);

Upvotes: 0

Melvin Winthagen
Melvin Winthagen

Reputation: 347

What worked for me was to do

Invoke(new Action(()=>checkedListBox1.Items.Add(c.Text, true)));

instead of

Invoke(new Action(()=>checkedListBox1.Items.Add(c, true)));

Hope this helps.

Upvotes: 1

King King
King King

Reputation: 63377

Try this:

foreach (WCore.CategoryFields cat in Global.getCategories()){
    ListBoxItem c = new ListBoxItem;
    c.Text = cat.CategoryId;
    c.Tag = cat.CategoryName;
    if (ints != null)
    {
        if (ints.Contains(c.Tag))
           Invoke(new Action(()=>checkedListBox1.Items.Add(c, true)));
        else
           Invoke(new Action(()=>checkedListBox1.Items.Add(c, false)));
    }
    else
        Invoke(new Action(()=>checkedListBox1.Items.Add(c, false)));
}
//Add this class somewhere in your form class or beside it
public class ListBoxItem {
   public string Text {get;set;}
   public object Tag {get;set;}
   public override string ToString(){
      return Text;
   }
}

I doubt that somehow your CheckBox can't be displayed as a string although it should show the System.Windows.Forms.CheckBox instead of blanks.

Upvotes: 3

Related Questions