Wpf – How to display default text “–Select Team –” in combo box on pageload in WPF

comboboxwpf

In a WPF app, in MVP app, I have a combo box,for which I display the data fetched from Database. Before the items added to the Combo box, I want to display the default text such as

" — Select Team –"

so that on pageload it displays and on selecting it the text should be cleared and the items should be displayed.

Selecting data from DB is happening. I need to display the default text until the user selects an item from combo box.

Please guide me

Best Answer

The easiest way I've found to do this is:

<ComboBox Name="MyComboBox"
 IsEditable="True"
 IsReadOnly="True"
 Text="-- Select Team --" />

You'll obviously need to add your other options, but this is probably the simplest way to do it.

There is however one downside to this method which is while the text inside your combo box will not be editable, it is still selectable. However, given the poor quality and complexity of every alternative I've found to date, this is probably the best option out there.

Related Solutions

C# – Display a Default value for a Databound WPF ComboBox

I think you are going to have to do some manual work here to get this behavior. You could check in code behind when you first display the ComboBox whether or not the SelectedItemId matches up or not and then change the selected index based on that. Or if you know that the SelectedItemId will always be -1 when there is no corresponding item, you could use a datatrigger.

Method 1:

if (!DataContext.Items.Exists(l => l.Id == DataContext.SelectedItemId))
{
    MyComboBox.SelectedIndex = 0;  //this selects the first item in the list
}

Method 2:

<Style TargetType="ComboBox">
    <Style.Triggers>
        <DataTrigger Binding="{Binding Path=SelectedItemId}" Value="-1">
            <Setter Property="SelectedIndex" Value="0"/>
        </DataTrigger>
    </Style.Triggers>
</Style>

Best Answer

Related Solutions

C# – Display a Default value for a Databound WPF ComboBox

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