Razor 代码编辑器默认显示“�”？

Question

In my Form, there is a textbox, in razor code using EditorFor and the type given for this is Char . But it always shows a '�' as default, what's that mean? is this because of char type?

please look at the picture

Answer 1

This � is the invalid unicode code point glyph. It is what you will see in most browsers when they encounter the null character '\0' (U+0000). This happens to be the default value of the .NET char data type.

Three workarounds:

1. substitute a valid char for the default, for example a space: c == default(char)? ' ': c c == default(char)? ' ': c
2. add logic to hide the EditorFor or LabelFor when the value is default(char)
3. change the data type to System.String , which leads to correct rendition in both cases null and String.Empty