How to get items of Listbox into CheckListBox with Check

Question

Hello Friends,

 

I have Listbox with multiple Items which contain Instrested  Subjects comes from database, & also I have CheckListbox which contain All Subjects.

When my ListBox is fill with Intrested subjects at same time CheckListBox subjects which contain in my listbox  subjects are should be checked

 

How should  I achive this?

Please answer me 

Answer 1

Just so you know, you should never loop through to build strings, they are immutable and this gets very costly. Use: StringBuilder sb = new StringBuilder(); foreach(Control co in r.Cells[2].Controls) { if (co.GetType() == typeof(Checkbox)) sb.Append((Checkbox)co).Checked.ToString()+"\n"; } string output = sb.ToString();

Answer 2

foreach(Control co in r.Cells[2].Controls) { if (co.GetType().Name.ToString() == "Checkbox") TextBox1.Text+= ((Checkbox)co).Checked.ToString()+"\n"; }

Answer 3

Always the same...you post a question then work it out!! the answer was to use the uniqueid of the control and then use findcontrol to return it. Also needed to cast the control etc. now it all works and heres the code foreach(Control co in r.Cells[2].Controls) { CheckBox cb=(CheckBox)this.FindControl(co.UniqueID); TextBox1.Text=TextBox1.Text+cb.Checked.ToString()+"\n"; }