Example of Using String.Format to Format Strings in XAML in WPF

1. Currency Format

<TextBlock Text="{Binding Price, StringFormat={}{0:C}}" /> // $123.46

2. Currency Format, One Decimal Place

<TextBox Text="{Binding Price, StringFormat={}{0:C1}}" /> // $123.5

3. Prefix Text

<TextBox Text="{Binding Price, StringFormat=Unit Price: {0:C}}" /> // Unit Price: $123.46

4. Suffix Text

<TextBox Text="{Binding Price, StringFormat={}{0} Yuan}" /> // 123.45678 Yuan

5. Fixed Number of Digits (Minimum digits, only supports integers)

<TextBox Text="{Binding Count, StringFormat={}{0:D6}}" /> // 086723

6. Specify Number of Decimal Places

<TextBox Text="{Binding Total, StringFormat={}{0:F4}}" /> // 28768234.9329

7. Number Grouped with Commas and Specify Decimal Places

<TextBox Text="{Binding Total, StringFormat={}{0:N3}}" /> // 28,768,234.933

8. Format Percentage

<TextBox Text="{Binding Persent, StringFormat={}{0:P1}}" /> // 78.9 %

9. Placeholder

<TextBox Text="{Binding Price, StringFormat={}{0:0000.00}}" /> // 0123.46

<TextBox Text="{Binding Price, StringFormat={}{0:####.##}}" /> // 123.46

10. Date/Time

<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:d}}" /> // 5/4/2015
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:D}}" /> // Monday, May 04, 2015
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:f}}" /> // Monday, May 04, 2015 5:46 PM
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:F}}" /> // Monday, May 04, 2015 5:46:56 PM
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:g}}" /> // 5/4/2015 5:46 PM
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:G}}" /> // 5/4/2015 5:46:56 PM
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:m}}" /> // May 04
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:M}}" /> // May 04
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:t}}" /> // 5:46 PM
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:T}}" /> // 5:46:56 PM
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:yyyy'年'MM'月'dd'日'}}" /> // 2015年05月04日
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:yyyy-MM-dd}}" /> // 2015-05-04
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:yyyy-MM-dd HH:mm}}" /> // 2015-05-04 17:46
<TextBox Text="{Binding DateTimeNow, StringFormat={}{0:yyyy-MM-dd HH:mm:ss}}" /> // 2015-05-04 17:46:56

Note: The Chinese version used literal Chinese characters in the format string. In English, you can still use the same literal approach as shown above. Alternatively, you can use a custom format string like {0:yyyy'年'MM'月'dd'日'} to preserve the Chinese characters if needed. The translation follows the original intent.

11. MultiBinding

<TextBox.Text>
    <MultiBinding StringFormat="Name: {0}{1}">
         <Binding Path="FristName" />
         <Binding Path="LastName" />
    </MultiBinding>
 </TextBox.Text>

// Name: AAbb

12. Special Characters in MultiBinding

<TextBox.Text>
     <MultiBinding StringFormat="Name: {0}&#x09;{1}">
           <Binding Path="FristName" />
           <Binding Path="LastName" />
     </MultiBinding>
 </TextBox.Text>

<!--
\a  &#x07;  BEL
\b  &#x08;  BS - Backspace
\f  &#x0c;  FF - Formfeed
\n  &#x0a;  LF, NL - Linefeed, New Line
\r  &#x0d;  CR - Carriage return
\t  &#x09;  HT - Tab, Horizontal Tabelator
\v  &#x0b;  VT - Vertical Tabelator
-->

Original author: Zhong Xun

Original link: https://www.cnblogs.com/ZXdeveloper/p/15513657.html