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Show selected item in ComboBox with custom item template


Show selected item in ComboBox with custom item template

By : john
Date : November 22 2020, 11:17 AM
will help you You can define ItemTemplate for ComboBox instead of ControlTemplate for ComboBoxItem to achieve that. As you can see, ControlTemplate for ComboBoxItem doesn't affect selected item appearance when ItemTemplate does. Following is content of your CustomComboboxItem Style merged within ComboBox Style :
code :
<Style x:Key="{x:Type ComboBox}" TargetType="ComboBox">
        ........
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        <Setter Property="ItemTemplate">
            <Setter.Value>
                <DataTemplate>
                    <Grid>
                        <Grid.Style>
                            <Style TargetType="Grid">
                                <Style.Triggers>
                                    <Trigger Property="IsMouseOver" Value="True">
                                        <Setter Property="Background" Value="LightGray"/>
                                    </Trigger>
                                </Style.Triggers>
                            </Style>
                        </Grid.Style>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="30"/>
                            <ColumnDefinition Width="*"/>
                        </Grid.ColumnDefinitions>
                        <Grid Grid.Column="1">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="16" MinHeight="16" MaxHeight="16" />
                                <RowDefinition Height="16" MinHeight="16" MaxHeight="16" />
                            </Grid.RowDefinitions>
                            <TextBlock Text="{Binding NewItemName}" Grid.Row="0" FontWeight="Bold" />
                            <TextBlock Text="{Binding NewItemComment}" Grid.Row="1" FontStyle="Italic" Foreground="#FF555454" />
                        </Grid>
                    </Grid>
                </DataTemplate>
            </Setter.Value>
        </Setter>
        ........
    </Style>


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With two comboboxes; How to load child item collections in second combobox based on the first combobox selected item

With two comboboxes; How to load child item collections in second combobox based on the first combobox selected item


By : user3209960
Date : March 29 2020, 07:55 AM
To fix this issue There is an example showing how this can be done at:
How to filter a second LookUp column based on a first LookUp column's value
Load Spread based on default item selected in the combobox and reload on changing selected item (knockout)

Load Spread based on default item selected in the combobox and reload on changing selected item (knockout)


By : user3201056
Date : March 29 2020, 07:55 AM
it helps some times You can call your load function on change of selected value selectedEmployeeList Add following code in constructor
code :
this.selectedEmployeeList .subscribe(function(newValue) {
    //This function is going to get called on every change of the selectedEmployeeList 
    //Add here your code to load the page
}, this);
MS Access: Combobox controlled records in form don't show up when combobox item is selected by button with vba

MS Access: Combobox controlled records in form don't show up when combobox item is selected by button with vba


By : Ange Christian Bimen
Date : March 29 2020, 07:55 AM
With these it helps try manually triggering the combo box event when you change the bookmark
add this line after setting the bookmark...
code :
Dim rs As DAO.Recordset
Set rs = Me.RecordsetClone
rs.FindFirst "ItemDescription = '" & Me.cbo_ConcreteItem.Value & "'"
If rs.NoMatch = True Then
    MsgBox "No such record"
Else
    Me.Bookmark = rs.Bookmark
    cbo_ConcreteItem_Change
End If

rs.Close
Combobox WPF template item and selected item

Combobox WPF template item and selected item


By : Petar Koev
Date : March 29 2020, 07:55 AM
Any of those help The selected item content isn't displayed in a ComboBoxItem, so your HorizontalContentAlignment style setter won't apply.
You can set that property on the ComboBox itself, however:
code :
<ComboBox 
    ItemsSource="{Binding CouleursList}" 
    SelectedItem="{Binding SelectedCouleur}"
    HorizontalContentAlignment="Stretch"
WPF Getting selected option of combobox item template

WPF Getting selected option of combobox item template


By : daniela.svas
Date : March 29 2020, 07:55 AM
With these it helps I populate my Combobox with textblocks via a datatemplate, since this was the most direct way i could find to populate the dropdown box with a list of variables. However, now that I am trying to read the value or selected option, I have no idea how to tackle it. All other topics recommend "SelectedValue.ToString();" or the likes, but this just returns the first line of my XAML.. , Cast SelectedItem to a Person:
code :
Person selectedPerson = DropdownDansen.SelectedItem as Person;
if (selectedPerson != null)
{
    string dans = selectedPerson.dans;
}
<ComboBox Name="DropdownDansen" ... SelectedValue="{Binding dans}" SelectedValuePath="dans">
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