用特殊字符替换部分字符串

Question

I want to replace: reference1\":\" null\" with reference1\": null

Example part of string to edit:

{\"reference1\":\"null\",\"secondarything\":

I've tried literal:

strValue = strValue.Replace(@reference1\":\" null\","reference1\": null");

I have quotes elsewhere I which to keep. It's the combination of quotation and backslash that has stumped me here.

Answer 1

You need to escape the double quotes using \ -

strValue = strValue.Replace("reference1\":\"null\"" , "reference1\": null");

EDIT 1:

If your string already contains \ , then escape them with additional \ , so now the code looks like -

strValue = strValue.Replace("reference1\\\":\\\"null\\\"", "reference1\\\": null");

Answer 2

Either use a normal string, and add a backslash before each " or \ :

strValue.Replace("reference1\\\":\\\" null\\\"", "reference1\\\": null")

Or use a verbatim string, and double up the " 's:

strValue.Replace(@"reference1\"":\"" null\""", @"reference1\"": null")

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That said, this looks like an XY problem: that string looks awfully like JSON, and trying to string manipulation on JSON is normally a bad idea. Using a json parser like Json.net is probably a better route towards whatever problem you're trying to solve.