Autocomplete textbox in c#.net

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Hello everybody,
am raveesh currently working in c#.net application,am using textbox in this i used this code,it is working and shows correctly but i met another problem that i can't select the listed values using arrow key but i can select the listed value using mouse pls help me

C#

private void textBox1_TextChanged(object sender, EventArgs e)
        {
            try
            {
                AutoCompleteStringCollection col = new AutoCompleteStringCollection();
                string ss = "select name from ss where name like '" + textBox1.Text + "%'";
                SqlCommand cc = new SqlCommand(ss, DbConnection.mCon);
                SqlDataReader dr = null;
                dr = cc.ExecuteReader();
                while (dr.Read())
                {
                    col.Add(dr["name"].ToString());
                }
                dr.Close();
                textBox1.AutoCompleteMode = AutoCompleteMode.Suggest;
                textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
                textBox1.AutoCompleteCustomSource = col;
            }
            catch
            {

            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            DbConnection.Connect();
        }

windows application developer

Posted 21-Nov-13 23:04pm

ravuravu

Updated 21-Nov-13 23:11pm

Thanks7872

v2

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OriginalGriff · Answer 1 · 2013-11-21T23:34:00

Why are you doing this in the TextChanged event?
All you are doing is trying to reload the list of sources from...the list of sources...
Move your code, and remove the WHERE clause, and it'll work:

C#

private void textBox1_TextChanged(object sender, EventArgs e)
{
}

private void Form1_Load(object sender, EventArgs e)
{
    DbConnection.Connect();
    AutoCompleteStringCollection col = new AutoCompleteStringCollection();
    string ss = "select name from ss";
    SqlCommand cc = new SqlCommand(ss, DbConnection.mCon);
    SqlDataReader dr = null;
    dr = cc.ExecuteReader();
    while (dr.Read())
    {
        col.Add(dr["name"].ToString());
    }
    dr.Close();
    textBox1.AutoCompleteMode = AutoCompleteMode.Suggest;
    textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
    textBox1.AutoCompleteCustomSource = col;
}