CODEWITHSUNDEEP
c#.netwinformscombobox
Dhanapal
Dhanapal

Reputation: 14507

Stop color hilighting of selected item in ComboBox?

I am using combo box in WinForm but when i was selected any item in combo box then selected item background color is blue. i want to remove this blue background color (particularly on form load, tried to set focus to other control in the form, but combo highlight not removed) but item should be selected .

Can anybody help out on this...?

Upvotes: 11

Views: 16989

Answers (7)

Ahmed
Ahmed

Reputation: 141

Simple way just Disable the ComboBox and then enable it

combobox.Enabled = false;
combobox.Enabled = true;

and even you select an item inside it the item will still selected but the highlight will go

Upvotes: 1

Matthis Kohli
Matthis Kohli

Reputation: 1995

I came across the same problem and after not finding a working solution I had the same idea as @Vadim K.

Here is a short example.

First step is to to change focus in the UI_Load event.

Private Sub UI_Load(sender As System.Object, e As System.EventArgs) Handles Me.Load    
    Me.lblTitle.Focus()
End Sub

Next step is to handle the case when someone selects a new value

Private Sub comboExportDates_SelectedIndexChanged(sender As Object, e As EventArgs) Handles comboExportDates.SelectedIndexChanged
        Me.lblTitle.Focus()
End Sub

Works fine for me

Upvotes: 0

Vadim K.
Vadim K.

Reputation: 371

To solve the same I have tried almost EVERYTHING:

  • setting the DropdownStyle property to DropdownList
  • this.BeginInvoke(new Action(() => { comboBox1.Select(0, 0); }));
  • combobox1.SelectionLength = 0;
  • changing comboBox.TabIndex
  • Not tried SendKeys.Send("{ESC}"); because it is not a reliable solution

Nothing helped. Maybe because I don't have text in my combobox items, only images. The only stable and working solution was to move a focus on another Label control:

    label.Focus();

You could also hide that label.

Upvotes: 5

Brad
Brad

Reputation: 21

I am not a big VB user, and only play with it in Excel, but also had this problem when a selection was made in my ComboBox. I finally found a way to get rid of the blue text highlighting.

I have a ComboBox on a UserForm. By selecting the ComboBox and viewing the Properties, simply changing the 'HideSelection' to True worked for me. You could also code for it: ComboBox1.HideSelection = True

Upvotes: 2

Sepehr
Sepehr

Reputation: 7

There is an Easy solution for you 

private void myComboBox_Paint(object sender, PaintEventArgs e)
{
     myComboBoxComboBox.SelectionLength = 0;
}

hope it helps :)

Upvotes: 1

David Hall
David Hall

Reputation: 33143

It appears that the only way to do this is by subclassing the combobox control.

Here is an example where someone does that:

http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/e234c4a7-0cf7-4284-a072-8152f7593002/

There are probably more on the web to guide you.

Upvotes: 3

V4Vendetta
V4Vendetta

Reputation: 38200

I found something over this site

Create a timer and enable it in your SelectedIndexChanged event, and in the timer just add ComboBox1.Select(0,0) this should remove the selection part and then disable the timer. Identify other entry points where in you can Enable the timer again

Code snippet

private void comboBox1_SelectedValueChanged(object sender, EventArgs e)
{
    //Get the item selected in the combobox
    ComboBox cbx = (ComboBox)sender;
    int idx = cbx.SelectedIndex;    
    string s1 = cbx.SelectedItem.ToString();
    // Enable the time so that the Highlight can be removed
    timer1.Enabled = true;
}

private void timer1_Tick(object sender, EventArgs e)
{
    // Remove the Highlight
    comboBox1.Select(0, 0);
    // Disable timer
    timer1.Enabled = false;
}

Upvotes: 2

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