How to enable text box to contain default value and be able to edit it in WP8?

Question

I'm scanning a document and saving three values.

I want to create a pop-up that will appear after the scan and will consist of 3 text boxes. Each text box will contain by default the scanned value, when I will have the abuilty to edit it by pressing on the text box.

I've looked at the text box properties but found only "read-only" property. Besides that, I really don't have a clue how to start and what to look for.

meanwhile I have this xaml describing the pop-up:

<Popup x:Name="AfterScan" Grid.Row="2">
    <Border  BorderThickness="2" Margin="10" BorderBrush="{StaticResource PhoneAccentBrush}">
        <StackPanel Background="Gainsboro" Width="434" Height="400">
            <TextBlock Text="Bill Details" TextAlignment="Center" FontSize="40" Margin="10,0" Foreground="Black"/>
            <TextBlock Text="Please review Bill Details and click OK when done" FontSize="17" Margin="40,0,10,0" Foreground="Black"/>
            <StackPanel  Orientation="Horizontal" Margin="0,10">
                <TextBox x:Name="test"  Width="100" Margin="10,0,10,0" Foreground="Black" BorderBrush="Black"/>
            </StackPanel>
            <StackPanel  Orientation="Horizontal" Margin="0,10">
                <TextBox x:Name="test2"  Width="100" Margin="10,0,10,0" Foreground="Black" BorderBrush="Black"/>
            </StackPanel>
            <StackPanel Orientation="Horizontal" Margin="0,10">
                <Button x:Name="btn_OK"  Content="OK" Width="215" Margin="110,0,10,0" Click="EnsuredDetails_Click" Foreground="Black" BorderBrush="Black"/> 
            </StackPanel>

        </StackPanel>
    </Border>
</Popup>

I know that If I write a value - I can get it and use it later, but I want the text box to contain my scanned value.

I also saw this article: http://mrbool.com/how-to-build-a-custom-textbox-in-windows-phone/25846

My problem is that the default value of this text box is a string declared in the xaml code, and I need it to be a dynamic parameter:

 <my:DefaultTxt_box Height="103" HorizontalAlignment="Left" Margin="-4,49,0,0"Name="defaultTxt_box1"
                           Text="" D_Text="Enter Your Name" VerticalAlignment="Top" Width="460"FontSize="32" FontFamily="Comic Sans MS" Foreground="#FFFFFF4C">
            <my:DefaultTxt_box.Background>

Can someone please guide me a little?

Thanks a lot!

If you're not using data binding, you can just do `test.Text = "Default Value"` (where `test` represents the `x:Name` you assigned the text box). — WiredPrairie, Mar 28 '14 at 00:01
but then "default value" is a constant string. I need it each time to be different vlaue — user1386966, Mar 28 '14 at 09:21
You'll need to use C# to set the text value or a binding. You can't do it from Xaml. — WiredPrairie, Mar 28 '14 at 10:44

score 1 · Accepted Answer · answered Mar 28 '14 at 06:12

You have to options to get this done.

Option 1)

You can bind text property of textbox with dynamic value property. for this you can use this link.

Option 2)

You will have three textboxes in xaml of popup.

<TextBox x:Name="test"  Width="100" Margin="10,0,10,0" Foreground="Black" BorderBrush="Black" Text="your default value will go here"/>

<TextBox x:Name="test_2"  Width="100" Margin="10,0,10,0" Foreground="Black" BorderBrush="Black" Text="your default value will go here"/>

<TextBox x:Name="test_3"  Width="100" Margin="10,0,10,0" Foreground="Black" BorderBrush="Black" Text="your default value will go here"/>

Then you can set text property of text boxes from code behind c# code. For this, first you have to get value out from scanned document.

Suppose you have got these values in variables ScannedValue1, ScannedValue2 and ScannedValue3

String ScannedValue1 ; //You will have to assigned values from scanned copy here
String ScannedValue2 ; //You will have to assigned values from scanned copy here
String ScannedValue3 ; //You will have to assigned values from scanned copy here

Then you can utilize these values to assign them to text boxes of pop up.

test.Text = ScannedValue1;
test_2.Text = ScannedValue2;
test_3.Text = ScannedValue3;

Hope you can get idea from this :)

Thanks, but again in the second option , the default value is set to a string that I enter. I want it to be different each time. — user1386966, Mar 28 '14 at 09:29
For that you have to set values in ScannedValue1, ScannedValue2 and ScannedValue3 from scanned document. — Naresh Ravlani, Mar 28 '14 at 10:43

score 0 · Answer 2 · edited May 23 '17 at 12:28

This may be what you're looking for:

Textbox myTxtbx = new Textbox();
myTxtbx.Text = "Enter text here...";

myTxtbx.OnFocus += OnFocus.EventHandle(RemoveText);
myTxtbx.LoseFocus += LoseFocus.EventHandle(AddText);

public RemoveText(object sender, EventArgs e)
{
     myTxtbx.Text = "";
}

public AddText(object sender, EventArgs e)
{
     if(myTxtbx.Text == "")
        myTxtbx.Text = "Enter text here...";
}

Adding placeholder text to textbox

score 0 · Answer 3 · answered Mar 28 '14 at 01:06

0

Every textBox should have a x:Name property, and just set it in your C# code like this:

myTextBox.Text = 'myScannedValue';

'myTextBox' is your x:Name of TextBoxin XAML. try it.

answered Mar 28 '14 at 01:06

Chris Shao

8,231
3
39
37

score 0 · Answer 4 · answered Mar 28 '14 at 01:15

0

Use PhoneTextBox from Windows Phone Toolkit. http://www.geekchamp.com/articles/windows-phone-toolkit-phonetextbox-in-depth

answered Mar 28 '14 at 01:15

Rajeev Nair

759
8
20

How to enable text box to contain default value and be able to edit it in WP8?

4 Answers4