How to include parenthesis for AS-IS output in format string

I want to see, Hello {} in the output, but the following gives compiler errors

Console.WriteLine(开发者_如何学C"{0} \{\}", "Hello");

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You need to use double parenthesis.

Something like

string s = String.Format("{0} {{}}", "Hello"); 

First question at

String Formatting FAQ

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Using double brackets. See How to escape braces (curly brackets) in a format string in .NET for example.

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Console.WriteLine("{0} {{}}", "Hello");