Using minus in C#

I want to use - in the code below but Visual Studio doesn't let me to use it and gives "error, unexpected character".

    Name = objFileInfo.Name.Substring(0,  
        objFileInfo.Name.Length – objFileInfo.Extension.L开发者_如何学Goength);  

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It is not a minus you are using:

Yours (char 8211, a math minus):

–

Minus (shorter, char 45 ascii, a dash which represents minus in C#):

-

Try copy the c# minus I use above and it will work :-)

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In C# (and I imagine almost any other programming language), the minus sign is simply represented by an ASCII dash, or hyphen-minus, which is a single keystroke on standard ASCII keyboards:

-

Not the mathematical minus symbol, which you're using:

−

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That character... whatever character it is... is not a minus (ascii code 45).