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Observable.Concat(IObservable, IObservable) method¶
Defined in
Type: Observable
Namespace: System.Reactive.Linq
Assembly: System.Reactive.dll
Applies to
netstandard2.0
Overloads¶
- 1.
public static IObservable<TSource> Concat<TSource>(this IObservable<TSource> first, IObservable<TSource> second) - 2.
public static IObservable<TSource> Concat<TSource>(params IObservable<TSource>[] sources) - 3.
public static IObservable<TSource> Concat<TSource>(this IEnumerable<IObservable<TSource>> sources) - 4.
public static IObservable<TSource> Concat<TSource>(this IObservable<IObservable<TSource>> sources) - 5.
public static IObservable<TSource> Concat<TSource>(this IObservable<Task<TSource>> sources)
1. Overload¶
public static IObservable<TSource> Concat<TSource>(this IObservable<TSource> first, IObservable<TSource> second)
Summary: Concatenates the second observable sequence to the first observable sequence upon successful termination of the first.
Type parameters
| Name | Description |
|---|---|
TSource | The type of the elements in the source sequences. |
Parameters
| Name | Type | Description |
|---|---|---|
first | IObservable | First observable sequence. |
second | IObservable | Second observable sequence. |
Returns: IObservable
Exceptions
| Type | Condition |
|---|---|
| System.ArgumentNullException | first or second is null. |
2. Overload¶
public static IObservable<TSource> Concat<TSource>(params IObservable<TSource>[] sources)
Summary: Concatenates all of the specified observable sequences, as long as the previous observable sequence terminated successfully.
Type parameters
| Name | Description |
|---|---|
TSource | The type of the elements in the source sequences. |
Parameters
| Name | Type | Description |
|---|---|---|
params sources | IObservable<TSource>[] | Observable sequences to concatenate. |
Returns: IObservable
Exceptions
| Type | Condition |
|---|---|
| System.ArgumentNullException | sources is null. |
3. Overload¶
public static IObservable<TSource> Concat<TSource>(this IEnumerable<IObservable<TSource>> sources)
Summary: Concatenates all observable sequences in the given enumerable sequence, as long as the previous observable sequence terminated successfully.
Type parameters
| Name | Description |
|---|---|
TSource | The type of the elements in the source sequences. |
Parameters
| Name | Type | Description |
|---|---|---|
sources | IEnumerable | Observable sequences to concatenate. |
Returns: IObservable
Exceptions
| Type | Condition |
|---|---|
| System.ArgumentNullException | sources is null. |
4. Overload¶
public static IObservable<TSource> Concat<TSource>(this IObservable<IObservable<TSource>> sources)
Summary: Concatenates all inner observable sequences, as long as the previous observable sequence terminated successfully.
Type parameters
| Name | Description |
|---|---|
TSource | The type of the elements in the source sequences. |
Parameters
| Name | Type | Description |
|---|---|---|
sources | IObservable | Observable sequence of inner observable sequences. |
Returns: IObservable
Exceptions
| Type | Condition |
|---|---|
| System.ArgumentNullException | sources is null. |
5. Overload¶
public static IObservable<TSource> Concat<TSource>(this IObservable<Task<TSource>> sources)
Summary: Concatenates all task results, as long as the previous task terminated successfully.
Type parameters
| Name | Description |
|---|---|
TSource | The type of the results produced by the tasks. |
Parameters
| Name | Type | Description |
|---|---|---|
sources | IObservable | Observable sequence of tasks. |
Returns: IObservable
Remarks
If the tasks support cancellation, consider manual conversion of the tasks using FromAsync, followed by a concatenation operation using Concat.
Exceptions
| Type | Condition |
|---|---|
| System.ArgumentNullException | sources is null. |