Combo box autocomplete blanks when down key pressed C# windows

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When selecting an item in the combobox list, the user can start typing the first few letters of the name and the combobox narrows the selection accordingly. It also shows another drop down menu of items that may match the user's selection. (suggest feature of autocomplete)
if the user uses the arrow keys to move down the suggested list then presses down key; (the logical thing to do to confirm a suggested selection), the text inside the combo box selected rather than the selected item.

any idea how to disable down key working in dropdownlist of combo box?

view this image link https://onedrive.live.com/redir?resid=908945FCED33300B!106&authkey=!AFgp787Zo7CZTnI&v=3&ithint=photo%2cpng[^]
here result is shown in auto-complete suggestion.when
I press down key record in combo box dropdown list selected
rather than the auto-complete suggestion.

Posted 3-Dec-14 21:25pm

ranjeet11

Updated 3-Dec-14 22:42pm

v4

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TheRealSteveJudge 4-Dec-14 3:44am

Without more details, nobody can understand your question.
Please show us XAML and its code behind.

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Praveen Kumar Upadhyay · Accepted Answer · 2014-12-03T22:58:00

Solution 2

Use onkeydown event

XML

<asp:DropDownList ID="DropDownList1" runat="server" onkeydown="return false;">
            <asp:ListItem>a</asp:ListItem>
            <asp:ListItem>b</asp:ListItem>
            <asp:ListItem>c</asp:ListItem>
        </asp:DropDownList>

in C# windows Application

C#

private void comboBox1_KeyDown(object sender, KeyEventArgs e)
        {
            e.Handled = true;
        }

Posted 3-Dec-14 22:58pm

Praveen Kumar Upadhyay

Updated 4-Dec-14 0:42am

v2

Comments

ranjeet11 4-Dec-14 6:25am

i want code for windows application

Praveen Kumar Upadhyay 4-Dec-14 6:42am

check out the solution. I have added for windows application as well.