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 # Struct ExpressionValueVariable

 Last update: 16.07.2025 

Namespace: [VM.Models.Pre](VM.Models.Pre.md)  
Assembly: VM.Models.Pre.dll

```csharp
public struct ExpressionValueVariable : IExpressionValue, IExpressionValue<double>, IExpression

```

#### Implements

[IExpressionValue](VM.Models.Pre.IExpressionValue.md), [IExpressionValue&lt;double&gt;](VM.Models.Pre.IExpressionValue-1.md), IExpression

#### Extension Methods

[LinkPropertyItemCache.GetLinkProperties(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkProperties_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkPropertiesAndValues(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkPropertiesAndValues_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkedObjects&lt;T&gt;(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_)

## Constructors

### ExpressionValueVariable(double)

```csharp
public ExpressionValueVariable(double value)

```

#### Parameters

`value` [double](https://learn.microsoft.com/dotnet/api/system.double)

### ExpressionValueVariable(double, string)

```csharp
public ExpressionValueVariable(double value, string expression)

```

#### Parameters

`value` [double](https://learn.microsoft.com/dotnet/api/system.double)

`expression` [string](https://learn.microsoft.com/dotnet/api/system.string)

## Properties

### Expression

```csharp
public string Expression { get; set; }

```

#### Property Value

[string](https://learn.microsoft.com/dotnet/api/system.string)

### IsSimpleValue

```csharp
public bool IsSimpleValue { get; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### Parser

```csharp
public static IExpressionParser<double> Parser { get; }

```

#### Property Value

[IExpressionParser](VM.Models.Pre.IExpressionParser-1.md)&lt;[double](https://learn.microsoft.com/dotnet/api/system.double)&gt;

### Value

```csharp
public double Value { get; set; }

```

#### Property Value

[double](https://learn.microsoft.com/dotnet/api/system.double)

## Methods

### Equals(ExpressionValueVariable)

```csharp
public bool Equals(ExpressionValueVariable other)

```

#### Parameters

`other` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

#### Returns

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### Equals(object)

```csharp
public override bool Equals(object obj)

```

#### Parameters

`obj` [object](https://learn.microsoft.com/dotnet/api/system.object)

#### Returns

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### GetSchema()

```csharp
public XmlSchema GetSchema()

```

#### Returns

[XmlSchema](https://learn.microsoft.com/dotnet/api/system.xml.schema.xmlschema)

### GetValue(string)

```csharp
public static object GetValue(string expression)

```

#### Parameters

`expression` [string](https://learn.microsoft.com/dotnet/api/system.string)

#### Returns

[object](https://learn.microsoft.com/dotnet/api/system.object)

### ReadXml(XmlReader)

```csharp
public void ReadXml(XmlReader reader)

```

#### Parameters

`reader` [XmlReader](https://learn.microsoft.com/dotnet/api/system.xml.xmlreader)

### SetParser(IExpressionParser&lt;double&gt;)

```csharp
public static void SetParser(IExpressionParser<double> parser)

```

#### Parameters

`parser` [IExpressionParser](VM.Models.Pre.IExpressionParser-1.md)&lt;[double](https://learn.microsoft.com/dotnet/api/system.double)&gt;

### WriteXml(XmlWriter)

```csharp
public void WriteXml(XmlWriter writer)

```

#### Parameters

`writer` [XmlWriter](https://learn.microsoft.com/dotnet/api/system.xml.xmlwriter)

## Operators

### operator ==(ExpressionValueVariable, ExpressionValueVariable)

```csharp
public static bool operator ==(ExpressionValueVariable expressionValue1, ExpressionValueVariable expressionValue2)

```

#### Parameters

`expressionValue1` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

`expressionValue2` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

#### Returns

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### implicit operator ExpressionValueVariable(double)

```csharp
public static implicit operator ExpressionValueVariable(double value)

```

#### Parameters

`value` [double](https://learn.microsoft.com/dotnet/api/system.double)

#### Returns

[ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

### implicit operator double(ExpressionValueVariable)

```csharp
public static implicit operator double(ExpressionValueVariable expressionValue)

```

#### Parameters

`expressionValue` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

#### Returns

[double](https://learn.microsoft.com/dotnet/api/system.double)

### implicit operator ExpressionValueVariable(string)

```csharp
public static implicit operator ExpressionValueVariable(string expression)

```

#### Parameters

`expression` [string](https://learn.microsoft.com/dotnet/api/system.string)

#### Returns

[ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

### implicit operator string(ExpressionValueVariable)

```csharp
public static implicit operator string(ExpressionValueVariable expressionValue)

```

#### Parameters

`expressionValue` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

#### Returns

[string](https://learn.microsoft.com/dotnet/api/system.string)

### operator !=(ExpressionValueVariable, ExpressionValueVariable)

```csharp
public static bool operator !=(ExpressionValueVariable expressionValue1, ExpressionValueVariable expressionValue2)

```

#### Parameters

`expressionValue1` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

`expressionValue2` [ExpressionValueVariable](VM.Models.Pre.ExpressionValueVariable.md)

#### Returns

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)