# ReplaceAppFromIDAsync Method ## Overloads | [ReplaceAppFromIDAsync(String, String, IEnumerable)](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm#Qlik_Engine_IHub_ReplaceAppFromIDAsync_System_String_System_String_System_Collections_Generic_IEnumerable_System_String__) | | Replaces objects of a target app with the objects from a source app.

The list of objects in the app to be replaced must be defined in `qIds`. | | --- | --- | --- | | [ReplaceAppFromIDAsync(AsyncHandle, String, String, IEnumerable)](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm#Qlik_Engine_IHub_ReplaceAppFromIDAsync_Qlik_Engine_AsyncHandle_System_String_System_String_System_Collections_Generic_IEnumerable_System_String__) | | Replaces objects of a target app with the objects from a source app.

The list of objects in the app to be replaced must be defined in `qIds`. | | [ReplaceAppFromIDAsync(AsyncHandle, Func, String, String, IEnumerable)](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm#Qlik_Engine_IHub_ReplaceAppFromIDAsync__1_Qlik_Engine_AsyncHandle_System_Func_Qlik_Engine_Communication_IO_Response___0__System_String_System_String_System_Collections_Generic_IEnumerable_System_String__) | | Replaces objects of a target app with the objects from a source app.

The list of objects in the app to be replaced must be defined in `qIds`. | [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm) ## ReplaceAppFromIDAsync(String, String, IEnumerable<String>) Replaces objects of a target app with the objects from a source app. The list of objects in the app to be replaced must be defined in `qIds`. ### Declaration ``` Task ReplaceAppFromIDAsync([QixName("qTargetAppId")] string targetAppId, [QixName("qSrcAppID")] string srcAppID, [QixName("qIds")] IEnumerable ids) ``` ### Parameters | Type | Name | Description | | --- | --- | --- | | System.String | targetAppId | Identifier (GUID) of the target app.
The target app is the app to be replaced. | | System.String | srcAppID | Identifier (GUID) of the source app.
The objects in the source app will replace the objects in the target app. | | System.Collections.Generic.IEnumerable<System.String> | ids | QRS identifiers (GUID) of the objects in the target app to be replaced. Only QRS-approved GUIDs are applicable.
An object that is QRS-approved, is for example an object that has been published (for example, not private anymore).
If an object is private, it should not be included in this list.
If the array of identifiers contains objects that are not present in the source app, the objects related to these identifiers are removed from the target app.
If `qIds` is empty, no objects are deleted in the target app. | ### Returns | Type | Description | | --- | --- | | System.Threading.Tasks.Task<System.Boolean> | | ### Remarks The data model of the app cannot be updated. [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm) ## ReplaceAppFromIDAsync(AsyncHandle, String, String, IEnumerable<String>) Replaces objects of a target app with the objects from a source app. The list of objects in the app to be replaced must be defined in `qIds`. ### Declaration ``` Task ReplaceAppFromIDAsync(AsyncHandle asyncHandle, [QixName("qTargetAppId")] string targetAppId, [QixName("qSrcAppID")] string srcAppID, [QixName("qIds")] IEnumerable ids) ``` ### Parameters | Type | Name | Description | | --- | --- | --- | | [AsyncHandle](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AsyncHandle.htm) | asyncHandle | Handle to asynchronous method request | | System.String | targetAppId | Identifier (GUID) of the target app.
The target app is the app to be replaced. | | System.String | srcAppID | Identifier (GUID) of the source app.
The objects in the source app will replace the objects in the target app. | | System.Collections.Generic.IEnumerable<System.String> | ids | QRS identifiers (GUID) of the objects in the target app to be replaced. Only QRS-approved GUIDs are applicable.
An object that is QRS-approved, is for example an object that has been published (for example, not private anymore).
If an object is private, it should not be included in this list.
If the array of identifiers contains objects that are not present in the source app, the objects related to these identifiers are removed from the target app.
If `qIds` is empty, no objects are deleted in the target app. | ### Returns | Type | Description | | --- | --- | | System.Threading.Tasks.Task<System.Boolean> | | ### Remarks The data model of the app cannot be updated. [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IHub.ReplaceAppFromIDAsync.htm) ## ReplaceAppFromIDAsync<T>(AsyncHandle, Func<Response, T>, String, String, IEnumerable<String>) Replaces objects of a target app with the objects from a source app. The list of objects in the app to be replaced must be defined in `qIds`. ### Declaration ``` Task ReplaceAppFromIDAsync(AsyncHandle asyncHandle, Func onResult, [QixName("qTargetAppId")] string targetAppId, [QixName("qSrcAppID")] string srcAppID, [QixName("qIds")] IEnumerable ids) ``` ### Parameters | Type | Name | Description | | --- | --- | --- | | [AsyncHandle](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AsyncHandle.htm) | asyncHandle | Handle to asynchronous method request | | System.Func<[Response](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.Communication.IO.Response.htm), T> | onResult | Continuation function | | System.String | targetAppId | Identifier (GUID) of the target app.
The target app is the app to be replaced. | | System.String | srcAppID | Identifier (GUID) of the source app.
The objects in the source app will replace the objects in the target app. | | System.Collections.Generic.IEnumerable<System.String> | ids | QRS identifiers (GUID) of the objects in the target app to be replaced. Only QRS-approved GUIDs are applicable.
An object that is QRS-approved, is for example an object that has been published (for example, not private anymore).
If an object is private, it should not be included in this list.
If the array of identifiers contains objects that are not present in the source app, the objects related to these identifiers are removed from the target app.
If `qIds` is empty, no objects are deleted in the target app. | ### Returns | Type | Description | | --- | --- | | System.Threading.Tasks.Task<T> | | ### Type Parameters | Name | Description | | --- | --- | | T | | ### Remarks The data model of the app cannot be updated.