Autocomplete any character using textbox in C#

Hi all,

I have a datatable that include the data output as following:

{Apple, April, Orange, Lemon}

Currently, I'm using autocomplete method as below:

AutoCompleteStringCollection source = new AutoCompleteStringCollection();

DataTable dt = DataServiceMySQL.SearchCommandTextDataTable("SELECT `name` FROM `product`");

for (int i = 0; i < dt.Rows.Count; i++)
{
source.Add(dt.Rows[i][0].ToString());
}

txtProduct.AutoCompleteMode = AutoCompleteMode.Suggest;
txtProduct.AutoCompleteSource = AutoCompleteSource.CustomSource;
txtProduct.AutoCompleteCustomSource = source;

But this method when you use the filter method, data output such as the following example:

Ex: when you input character 'a' then the data output: Apple and April.

when you input chacter 'o' then the data output: Orange.

when you input chacter 'l' then the data output: Lemon.

But I want to inout character 'e' then the data output: Apple, Orange.

Please help and thank you very much ^_^