# IStringExpression Interface

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

#### Properties

Abbreviated syntax:

"qStringExpression":"=<expression>"

Extended object syntax:

"qStringExpression":{"qExpr":"=<expression>"}

Where:

* < expression > is a string

The result of the evaluation of the expression can be of any type, as it is returned as a JSON (quoted) string.

## Syntax

```
[ValueClass]
public interface IStringExpression : IAbstractStructure
```

## Properties

| Name | Description |
| --- | --- |
| [Expr](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IStringExpression.Expr.htm#Qlik_Engine_IStringExpression_Expr) | JSON property name: qExpr |