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String.Format value in App.config creates extra backslash

Here's the line from App.Config:

<add key="CheckFileFormatString" value="P{0}\t&quot;{1}, {2}&quot;\t{3}\t{4}\t{5}\t{6}\t{7}\t{8}\t{9}\t{10}"/>

Here's the code that puts it on a line (please ignore the legacy call .AppSettings.Get

if that's the only problem):

string format = ConfigurationSettings.AppSettings.Get("CheckFileFormatString");

... and here's the resulting line:

P{0}\\t\"{1}, {2}\"\\t{3}\\t{4}\\t{5}\\t{6}\\t{7}\\t{8}\\t{9}\\t{10}

Where is the extra backslash added?

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2 answers


\ t is the character for tab in C #, etc., but it is not in XML. Your \ t is interpreted as two characters. Try replacing \ t with &#09;

in your config file.



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The extra backslash comes from how the debugger displays the value.

The string value is offset in the same way that you can write it as a string literal in your code, so every backslash in the string appears as \.



The backslashes in your string come from the XML value, since the backslash is not an escape character in XML. As Richard explained, you need to use &#09;

to get the tab character in the XML value.

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