Search an item in the listbox where the item to be searched is in textbox and no button click C#

Question

say ive a listbox with items already present, say the items are

Ant
Adam    
Ball
Cat
Dog
Ear
Frog

above the listbox there is a textbox prompting the user to search

say if i enter in textbox ad then it must point to Adam if i remove a then it must point to Dog and must not use a button to search

also if i click on the item cat in the listbox, then next to the listbox there is a textbox it says Hi I'm Cat

I see that its not correct to use textbox to display Hi I'm Cat what shall i use to display info regarding the details of selected item.

Found solution myself

    private void textBox1_TextChanged(object sender, EventArgs e)
    {
        int index = listBox1.FindString(textBox1.Text, -1);
        if (index != -1)
        {
            listBox1.SetSelected(index, true);
        }
    }

Found solution my self private void textBox1_TextChanged(object sender, EventArgs e) { int index = listBox1.FindString(textBox1.Text, -1); if (index != -1) { listBox1.SetSelected(index, true); } } — Prasad MV

Manish Mishra Manish Mishra · Accepted Answer · 2013-03-03T08:22:47

you need to update your listbox on the "TextChanged" event of TextBox.

get the text written in the textbox inside this event, iterate over the items of listbox and do Text.Contains

protected void TextBox1_TextChanged(object sender, EventArgs e)
        {
            var current = TextBox1.Text;
            foreach (ListItem item in ListBox1.Items)
            {
                if (item.Text.ToLower().Contains(current.ToLower()))
                    item.Selected = true;
            }
        }

this is how you can grab the selected item of listbox:

protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if(ListBox1.SelectedItem!=null)
            {
               Label1.Text =  ListBox1.SelectedItem.Text;
               //or you can dynamically create a label and add it to the page
               Label lbl = new Label();
               lbl.Text=ListBox1.SelectedItem.Text;
               MyContainer.Controls.Add(lbl);
               //where MyContainer is any server side container, HtmlContainerControl  
               //or HtmlControl 
            }
        }

Search an item in the listbox where the item to be searched is in textbox and no button click C#

2 Answers