C#•2y ago

❔ Can't use string interpolation within {}

I'm getting the error when I'm trying to use string interpolation within curly braces{} string uname="abcd"; string pwd ="123"; string fullData= $"{"username": "{uname}","password": "{pwd}"}"; The above code throws an error. I can do this with 2 or more lines. But I need in single line.

7 Replies

Angius•2y ago

Double-up the braces you want to be literal

Tvde1•2y ago

or use C# 11's new feature:

string fullData = $$"""
    {
        "username": "{{uname}}",
        "password": "{{pwd}}"
    }
    """;

string fullData = $$"""
    {
        "username": "{{uname}}",
        "password": "{{pwd}}"
    }
    """;

Angius•2y ago

Or use JSON serializer mweh

string fullData = JsonSerializer.Serialize(new {
    username = uname,
    password = pwd
});

string fullData = JsonSerializer.Serialize(new {
    username = uname,
    password = pwd
});

333fred•2y ago

Not quite:

string fullData = $$"""
    {
        "username": "{{uname}}",
        "password": "{{pwd}}",
    }
    """;

string fullData = $$"""
    {
        "username": "{{uname}}",
        "password": "{{pwd}}",
    }
    """;

Tvde1•2y ago

darn that's what I did but I undid it later I suppose I forgot there are braces in json

333fred•2y ago

😛

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Can't use string interpolation within {}