## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used when the source and the result types are the same.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::None, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Enum [Base64FormattingOptions](../base64formattingoptions/)
* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used when simple constructor-like cast is needed.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Static, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for exception wrappers.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Exception, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Typedef [Exception](../exception/)
* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for casting object to exception.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::ObjectToException, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used when the source and result both are smart pointers (without expicit SmartPtr<...> in result type).

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Pointer, typename CastResult<Result>::type> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(Source) method


Casts the source type to the result type using explicit cast. Used when the casting raw pointer to smart pointer.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::RawPointer, typename CastResult<std::remove_pointer_t<Result>>::type> System::ExplicitCast(Source value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | Source | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used when the source and result both are smart pointers (with expicit SmartPtr<...> in result type).

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::PointerToPointer, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for unboxing object to nullable.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::UnboxingToNullable, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used to box nullable.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::NullableBoxing, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for unboxing nullable object.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::NullableUnboxing, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for enum boxing.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::EnumBoxing, SmartPtr<BoxedValueBase>> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Class [SmartPtr](../smartptr/)
* Class [BoxedValueBase](../boxedvaluebase/)
* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for common boxing.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Boxing, typename CastResult<Result>::type> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for [System::String](../string/) boxing.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::StringBoxing, typename CastResult<Result>::type> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for common unboxing.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Unboxing, Result> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for nullptr casting.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Null, typename CastResult<Result>::type> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)
## System::ExplicitCast(const Source\&) method


Casts the source type to the result type using explicit cast. Used for casting between arrays.

```cpp
template<typename Result,typename Source> std::enable_if_t<Details::CastType<Source, Result>::Array, typename CastResult<Result>::type> System::ExplicitCast(const Source &value)
```


| Parameter | Description |
| --- | --- |
| Source | The source type. |
| Result | The result type. |

| Parameter | Type | Description |
| --- | --- | --- |
| value | const Source\& | [Object](../object/) to cast. |

### ReturnValue

The cast result.

## See Also

* Namespace [System](../)
* Library [Aspose.PUB for C++](../../)