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Wpf combobox padding

It's a simple question

How to remove the space between the contents of a combo box and its border. For instance. If the combobox selection is "Selection 1" then the "S" is drawn at the top-left corner of the ComboBox control with no spaces between it and the top-left of the control.

I did it

<ComboBox Padding="0"/>

Even this:

<ComboBox.ItemContainerStyle>
  <Style TargetType="ComboBoxItem">
    <Setter Property="Padding" Value="0"/>
  </Style>
</ComboBox.ItemContainerStyle>

The above ComboBox is inside a ListView GridViewColumn. Maybe something is messing around with something.

This does not remove padding. Any ideas?

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2 answers


You can not. At least not with the default template. You will have to write your own. The default template includes the following:

<DockPanel Margin="2">
    <TextBox .../>
</DockPanel>


This will be a hard-coded stock. What you can do with the default template is to use negative padding to compensate for the hard-coded margin:

<ComboBox Padding="-2">
    <ComboBoxItem >Selected</ComboBoxItem>
</ComboBox>
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In Expression Blend, this is trivial:



  • Right click on the ComboBox and select Edit Control Parts (Template)

    - Edit A Copy

    .
  • Delete Margin="2"

    from the beginning of the template.
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