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# CombinedSignersProvider

```
class EosSharp::Core::Providers::CombinedSignersProvider
  : public ISignProvider
```

Signature provider that combine multiple signature providers to complete all the signatures for a transaction.

## Summary

| Members                                                                                                                                                                                                                                                                 | Descriptions                                                    |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------- |
| `private List<` [`ISignProvider`](/unity-plugin-suite/eossharp/api-docs/eossharp-core/eossharp-core-interfaces.md)`>` [`Signers`](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1ae8aaf996c9db766477f2dc50ae603abd)                             |                                                                 |
| `public` [`CombinedSignersProvider`](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1a6627f4273acabc945dec7a90fbe25c6f)`(List<` [`ISignProvider`](/unity-plugin-suite/eossharp/api-docs/eossharp-core/eossharp-core-interfaces.md) `> signers)`  | Creates the provider with a list of signature providers.        |
| `public async Task< IEnumerable< string > >` [`GetAvailableKeys`](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1abc854ac1910c72b068bb1de7b01494cf)`()`                                                                                         | Get available public keys from the list of signature providers. |
| `public async Task< IEnumerable< string > >` [`Sign`](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1adb0929d2b1d32c1bcf325e15fc8b86f0)`(string chainId, IEnumerable< string > requiredKeys, byte[] signBytes, IEnumerable< string > abiNames)` | Sign bytes using the list of signature providers.               |
| `public string` [`Sign`](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1a0fc9796423303a91abdb2dada5725241)`(string chainId, byte[] signBytes)`                                                                                                  |                                                                 |
| `public Dictionary< string, string >` [`Sign`](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1a79cf8d8e56daaf553c0f6f1579016ca6)`()`                                                                                                            |                                                                 |

## Members

**`private List<`** [**`ISignProvider`**](/unity-plugin-suite/eossharp/api-docs/eossharp-core/eossharp-core-interfaces.md)**`>`** [**`Signers`**](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1ae8aaf996c9db766477f2dc50ae603abd)

**`public`** [**`CombinedSignersProvider`**](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1a6627f4273acabc945dec7a90fbe25c6f)**`(List<`** [**`ISignProvider`**](/unity-plugin-suite/eossharp/api-docs/eossharp-core/eossharp-core-interfaces.md) **`> signers)`**

Creates the provider with a list of signature providers.

#### Parameters

* `signers`

**`public async Task< IEnumerable< string > >`** [**`GetAvailableKeys`**](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1abc854ac1910c72b068bb1de7b01494cf)**`()`**

Get available public keys from the list of signature providers.

#### Returns

List of public keys

**`public async Task< IEnumerable< string > >`** [**`Sign`**](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1adb0929d2b1d32c1bcf325e15fc8b86f0)**`(string chainId, IEnumerable< string > requiredKeys, byte[] signBytes, IEnumerable< string > abiNames)`**

Sign bytes using the list of signature providers.

#### Parameters

* `chainId` EOSIO Chain id
* `requiredKeys` required public keys for signing this bytes
* `signBytes` signature bytes
* `abiNames` abi contract names to get abi information from

#### Returns

List of signatures per required keys

**`public string`** [**`Sign`**](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1a0fc9796423303a91abdb2dada5725241)**`(string chainId, byte[] signBytes)`**

**`public Dictionary< string, string >`** [**`Sign`**](#class_eos_sharp_1_1_core_1_1_providers_1_1_combined_signers_provider_1a79cf8d8e56daaf553c0f6f1579016ca6)**`()`**