# LibTmux.UnsupportedQueryExpressionException

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** .NET
- **Kind:** class
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/6656a563ec9e07ab52e0c3ac96f7704fc94cc0c0/src/LibTmux/Exceptions/UnsupportedQueryExpressionException.cs#L9
- **Page:** https://libtmux.org/reference/dotnet/libtmux-unsupportedqueryexpressionexception/

Thrown when an expression cannot be translated to a query.

Translation never falls back to client evaluation. Silently evaluating an
untranslatable node would make one predicate mean different things
depending on where it ran.

## Members

- `UnsupportedQueryExpressionException` (method) — Initializes the exception for one untranslatable expression.
- `Expression` (property) — Gets the expression that could not be translated.