Instagram like RichEditBox in uwp

Question

Hi everyone,

Is it possible to have RichEditBox that starts typing every Paragraph / Sentence in an origin Font size and keep going till font size is higher than X value and adding every word cause a little font size decreasing to align the text in one line exactly like what Instagram did.
I've uploaded a little video of what I want.
I couldn't attach here

https://www.mediafire.com/file/4xp2ngx7s4lbhm6/recordedVideo~1.mp4/file

Answer 1

Instagram like RichEditBox in uwp

There is no such control in uwp platform, currently there is a workaround that insert Textbox into ViewBox that will set the text fontsize automatically. Then make new TextBlock with text and insert it into the root layout.

private string resault;  
private int count = 0;  
private void TextBox_TextChanged(object sender, TextChangedEventArgs e)  
{  
    var tb = sender as TextBox;  
    resault = tb.Text;        
}  
  
private void TextBox_KeyDown(object sender, KeyRoutedEventArgs e)  
{  
    if(e.Key== VirtualKey.Enter)  
    {  
        var textbox = new TextBlock() {  
        VerticalAlignment = VerticalAlignment.Center,  
        HorizontalAlignment = HorizontalAlignment.Center,  
        Text= resault  
        };            
        RootLayout.Children.Insert(count++, textbox);  
        Tbox.Text = string.Empty;  
    }  
}  

Answer 2

this is a good solution but like Nico say its hard to design .fontsize is 14 it's good