Getting Started
EO.Pdf
EO.Web
EO.WebBrowser
EO.Wpf
- Overview
- Installation & Deployement
- Skin & Theme
- Common Taskes and Services
- EO.Wpf Buttons
- EO.Wpf Calendar & DatePicker
- EO.Wpf ComboBox
  - EO.Wpf ComboBox
  - Static ComboBox
  - Dynamic ComboBox from Data Source
  - DropDown Header & Footer
  - Multi-Selection
  - Clear Button
  - Empty Prompt
  - Disabled Item
  - Item Template Selector
- EO.Wpf DockView
- EO.Wpf Gauge
- EO.Wpf ListBox
- EO.Wpf Menu
- EO.Wpf MaskedEdit
- EO.Wpf ProgressBar
- EO.Wpf Slider
- EO.Wpf SpinEdit
- EO.Wpf SplitView
- EO.Wpf TabControl
- EO.Wpf TreeView
- EO.Wpf Utility Controls
- EO.Wpf WindowChrome
- Sample Data Objects
Common Topics
Reference

Table of Contents

Empty Prompt

EO.Wpf ComboBox can display an "empty prompt" when the ComboBox is empty. To set the empty prompt, simply set the ComboBox's EmptyPrompt property. For example, the following code set the ComboBox's empty prompt to "--Please select an item--":

XAML

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<Window x:Class="Test.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:eo="http://schemas.essentialobjects.com/wpf/"
        Title="MainWindow" Height="250" Width="350">
    <StackPanel Margin="10">
        <eo:ComboBox Width="200" HorizontalAlignment="Left" EmptyPrompt="--Please select an item--">
            <eo:ComboBoxItem>Item 1</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 2</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 3</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 4</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 5</eo:ComboBoxItem>
        </eo:ComboBox>
    </StackPanel>
</Window>

The above code produces the following result:

Property EmptyPrompt can be any object, not just a string. The following XAML uses a TextBlock object and set the FontStyle and Foreground property on the TextBlock object:

XAML

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<Window x:Class="Test.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:eo="http://schemas.essentialobjects.com/wpf/"
        Title="MainWindow" Height="250" Width="350">
    <StackPanel>
        <eo:ComboBox Width="200" HorizontalAlignment="Left">
            <eo:ComboBox.EmptyPrompt>
                <TextBlock FontStyle="Italic" Foreground="Gray">--Please select an item--</TextBlock>
            </eo:ComboBox.EmptyPrompt>
            <eo:ComboBoxItem>Item 1</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 2</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 3</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 4</eo:ComboBoxItem>
            <eo:ComboBoxItem>Item 5</eo:ComboBoxItem>
        </eo:ComboBox>
    </StackPanel>
</Window>

The above code produces the following result:

Table of Contents

Message