VB.net Autocomplete Textbox filter using mysql database as custom source - mysql

Question

I'm Having a problem regarding to the autocomplete textbox. First I already made the autocomplete textbox work with mysql database as custom source but the default textfilter of autocomplete is "start with" not "contains". I want to change the textfilter to "contains", so that when I search any part of the string, the whole name which contains the searched word will appear in the autocomplete suggestions.
Can anyone help me fix my code?
This is the code i've done so far:
txtSearch.AutoCompleteMode = AutoCompleteMode.SuggestAppend
txtSearch.AutoCompleteSource = AutoCompleteSource.CustomSource
Dim DataCollection As New AutoCompleteStringCollection()
Dim query As String
sqlcon = New MySqlConnection
sqlcon.ConnectionString =
"server=localhost;userid=root;password=root;database=svfmemberlistdb"
Try
sqlcon.Open()
query = " SELECT Name FROM svfmemberlistdb.svfmemberlist "
sqlcmd = New MySqlCommand(query, sqlcon)
sqladr.SelectCommand = sqlcmd
sqladr.Fill(ds)
sqladr.Dispose()
sqlcon.Close()
For Each row As DataRow In ds.Tables(0).Rows
If row.ToString.Contains(txtSearch.Text) Then
DataCollection.Add(row(0).ToString())
End If
Next
Catch ex As Exception
End Try
txtSearch.AutoCompleteCustomSource = DataCollection

Answer 1

I quote here Mitja Bonca's answer on MSDN.
In this case, autocompletemode will just not do. Its code is not meant
for something like it.
You will have to do your own code, to do the filtering on each letter
press.
So I would suggest not to use autocompletemode, and get all the data
(names) into dataTable. When user presses some button ("1" for
example), you start with your filtering, by creating new Datatable
(leave the main one untached - so you can return back to all data when
clearing comboBox by backspace), with Copy() method - to create a full
copy of original one, and use Select method to do the filteing.
This should look something like by using % simbol on both sides of a
string - to filter inbetween - this is what you want!
DataTable AllNames = new DataTable();
//fill it up and leave it untouched!
//to filter comboBox with names that contains pressed characters do in
private void comboBox1_KeyPress(object sender, KeyPressEventArgs e)
{
string name = string.Format("{0}{1}", comboBox1.Text, e.KeyChar.ToString()); //join previous text and new pressed char
DataRow[] rows = table.Select(string.Format("FieldName LIKE '%{0}%'", name));
DataTable filteredTable = AllNames.Clone();
foreach(DataRow r in rows)
filteredTable.ImportRow(r);
comboBox1.DataSource = null;
comboBox1.DataSource = filteredTable.DefaultView;
comboBox1.DisplayMember = "FieldName";
}
Reference
EDIT: This is of course a c# answer not VB.NET but it might be helpful to get the concept.