CODEWITHSUNDEEP
wpfxamlbinding
BugsFixer
BugsFixer

Reputation: 377

Bind textbox to combobox as text

I am trying to bind the ComboBox selected item to a TextBox, I have tried:

<ComboBox  x:Name="TitlesCombobox"  IsEditable="True" IsReadOnly="True" Text="-- Subtitles --"   >
    <ComboBoxItem Content="sub title 1"/>
    <ComboBoxItem Content="sub title 2"/>
    <ComboBoxItem Content="sub title 3"/>
    <ComboBoxItem Content="sub title 4"/>
</ComboBox>

and:

<TextBox x:Name="freestyleSubtitleTxt" Text="{Binding ElementName=TitlesCombobox, Path=SelectedValue}" />

but when I select item I get in TextBox: System.Windows.Controls.ComboBoxItem: sub title 3

Upvotes: 1

Views: 96

Answers (2)

dstreissi
dstreissi

Reputation: 279

To bind only to the value of a ComboBoxItem use the Property SelectedValuePath.

Your ComboBox should look like this:

<ComboBox  x:Name="TitlesCombobox" 
           IsEditable="True" 
           IsReadOnly="True" 
           Text="-- Subtitles --" 
           SelectedValuePath="Content">
                <ComboBoxItem Content="sub title 1"/>
                <ComboBoxItem Content="sub title 2"/>
                <ComboBoxItem Content="sub title 3"/>
                <ComboBoxItem Content="sub title 4"/>
</ComboBox>

The SelectedValuePath property specifies the path to the property that is used to determine the value of the SelectedValue property.

Upvotes: 1

mm8
mm8

Reputation: 169420

Bind to SelectedItem.Content:

<TextBox x:Name="freestyleSubtitleTxt" 
         Text="{Binding ElementName=TitlesCombobox, Path=SelectedItem.Content}" />

Or replace the ComboBoxItems with strings and bind to SelectedItem:

<ComboBox  x:Name="TitlesCombobox"  IsEditable="True" IsReadOnly="True" Text="-- Subtitles --"
           xmlns:s="clr-namespace:System;assembly=mscorlib">
    <s:String>sub title 1</s:String>
    <s:String>sub title 2</s:String>
    <s:String>sub title 3</s:String>
    <s:String>sub title 4</s:String>
</ComboBox>

<TextBox x:Name="freestyleSubtitleTxt" Text="{Binding ElementName=TitlesCombobox, Path=SelectedItem}" />

Upvotes: 2

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