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I have a large amount of items in a listBox called listBox1. I also have a textBox (textBox1) at the top. I want to be able to type into the textBox and the listBox searches through its items and finds ones that contain what I am typing.

For example, say the listBox contains
and Barcolli

If I start typing the letter C, then I want it to show both Cat and Carrot, when i type a it should keep showing them both, but when I add an r it should remove Cat from the list. Is there anyway to do this?

i am fetching listbox from databse and then when we type text in textbox according to that text item show in textbox

What I have tried:

private void Form1_Load(object sender, EventArgs e)
            SqlConnection con = new SqlConnection(Edit.connectionname());
            string query = "select MEDICINE from tinchure";
            SqlCommand cmd = new SqlCommand(query, con);
            DataTable data = new DataTable();
            SqlDataReader dbr;
                dbr = cmd.ExecuteReader();
                while (dbr.Read())
                    string sname = (string)dbr["MEDICINE"]; //name is coming from database

                   string[] array = new string[listBox1.Items.Count];

                   for (int i = 0; i < listBox1.Items.Count; i++)
                       object s = listBox1.Items[i];
                       array[i] = s.ToString();
            catch (Exception ex)

          private void textBox5_TextChanged(object sender, EventArgs e)

            foreach (string str in )
                if (str.StartsWith(textBox5.Text, StringComparison.CurrentCultureIgnoreCase))


Updated 8-Sep-16 12:17pm
[no name] 8-Sep-16 12:35pm    
if "Is there anyway to do this?" is your actual question, then your answer is "Yes, there are many ways you can do this."
ZurdoDev 8-Sep-16 13:49pm    
No, they did not ask "are there many ways to do this." ;) Yes, there is anyway to do this.
[no name] 8-Sep-16 14:21pm    
Thank you. I guess my attempt to use psychic powers, like so many others seem to have, has failed miserably.
Maciej Los 8-Sep-16 14:48pm    
A question is tagged as ASP.NET but the code and the title of qestion correspond to WinForms.
[no name] 8-Sep-16 14:52pm    
Yeah and try and figure out how "Cat, Dot, Carrot,and Barcolli" are medicines.... Barcolli might be a medicine though. I have no idea what a barcolli might be.

Start here: Search As You Type in C#[^]. This might help you in finding a way to implement search future in your WinForm.
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Assuming you want to achieve this in winform.

here is an auto suggest textbox, please have a look, hope this will help you

autosuggest textbox
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