In this post i will share to everyone how to make an auto suggest TextBox in wpf like GOOGLE Textbox.
For this i create a grid whose first row contains a textbox and the second row contains a Listbox. Now, when the textbox gets the focus and its text changes due to the user’s input then fill up the listbox.
Here is the XAML code
Now this is CS code for glorious effect in textbox
For this i create a grid whose first row contains a textbox and the second row contains a Listbox. Now, when the textbox gets the focus and its text changes due to the user’s input then fill up the listbox.
Here is the XAML code
1 | <Grid> |
2 | <TextBox Height="23" HorizontalAlignment="Left" Margin="111,46,0,0" Name="txtAutoSuggestName" VerticalAlignment="Top" Width="161" PreviewKeyDown="txtAutoSuggestName_PreviewKeyDown" TextChanged="txtAutoSuggestName_TextChanged" /> |
3 | <ListBox Height="Auto" HorizontalAlignment="Left" Margin="111,69,0,0" Name="listBoxSuggestion" VerticalAlignment="Top" Width="161" Visibility="Hidden" PreviewKeyDown="listBoxSuggestion_PreviewKeyDown" KeyDown="listBoxSuggestion_KeyDown" /> |
4 | </Grid> |
Now this is CS code for glorious effect in textbox
01 | private void txtAutoSuggestName_TextChanged(object sender, TextChangedEventArgs e) |
02 | { |
03 | listBoxSuggestion.Items.Clear(); |
04 | if (txtAutoSuggestName.Text != "") |
05 | { |
06 | List<Customer> namelist = CustomerGatewayObj.listShow(txtAutoSuggestName.Text); |
07 | if (namelist.Count > 0) |
08 | { |
09 | listBoxSuggestion.Visibility = Visibility.Visible; |
10 | foreach (var obj in namelist) |
11 | { |
12 | listBoxSuggestion.Items.Add(obj.id); |
13 | } |
14 | } |
15 | } |
16 | else |
17 | { |
18 | listBoxSuggestion.Visibility = Visibility.Hidden; |
19 | } |
20 | } |
21 |
22 | private void txtAutoSuggestName_PreviewKeyDown(object sender, KeyEventArgs e) |
23 | { |
24 | if (e.Key == Key.Down) |
25 | { |
26 | listBoxSuggestion.Focus(); |
27 | } |
28 | } |
29 |
30 |
31 | private void listBoxSuggestion_PreviewKeyDown(object sender, KeyEventArgs e) |
32 | { |
33 | if (listBoxSuggestion.SelectedIndex == 0 && e.Key == Key.Up) |
34 | { |
35 | txtAutoSuggestName.Focus(); |
36 | } |
37 | } |
38 |
39 | private void listBoxSuggestion_KeyDown(object sender, KeyEventArgs e) |
40 | { |
41 | if (listBoxSuggestion.SelectedIndex > -1) |
42 | { |
43 | if (e.Key == Key.Enter) |
44 | { |
45 | txtAutoSuggestName.Text = listBoxSuggestion.SelectedItem.ToString(); |
46 | } |
47 | } |
48 | } |
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