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The Add method adds a new rule to the collection.
Syntax
HRESULT Add(
  [in] INetFwRule *rule
);
Parameters
[in] rule
Rule to be added to the collection via an INetFwRule object.
Return value
C++
If the method succeeds the return value is S_OK.If the method fails, the return value is one of the following error codes.
| Return code | Description | 
|---|---|
| 
 | The operation was aborted due to permissions issues. | 
| 
 | The method failed because a parameter was not valid. | 
| 
 | The method failed because the object is already in the collection. | 
VB
If the method succeeds the return value is S_OK.If the method fails, the return value is one of the following error codes.
| Return code | Description | 
|---|---|
| 
 | The operation was aborted due to permissions issues. | 
| 
 | The method failed because a parameter was not valid. | 
| 
 | The method failed because the object is already in the collection. | 
Remarks
If a rule with the same rule identifier as the one being submitted already exists, the existing rule is overwritten.
Adding a firewall rule with a LocalAppPackageId specified can lead to unexpected behavior and is not supported.
Requirements
| Requirement | Value | 
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] | 
| Minimum supported server | Windows Server 2008 [desktop apps only] | 
| Target Platform | Windows | 
| Header | netfw.h | 
| DLL | FirewallAPI.dll |