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SignedCms.RemoveSignature Method (Int32)

Removes the signature at the specified index of the SignerInfos collection.

Namespace:  System.Security.Cryptography.Pkcs
Assembly:  System.Security (in System.Security.dll)

public void RemoveSignature(
	int index


Type: System.Int32

The zero-based index of the signature to remove.


A CMS/PKCS #7 message is not signed, and index is invalid.


index is less than zero.


index is greater than the signature count minus 1.


The signature could not be removed.


An internal cryptographic error occurred.

.NET Framework

Supported in: 4.6, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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