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SecureString.IsReadOnly Method

.NET Framework 4

Other Versions

Indicates whether this secure string is marked read-only.

Namespace: System.Security
Assembly: mscorlib (in mscorlib.dll)

Syntax

C++

Copy

public bool IsReadOnly()

Return Value

Type: System.Boolean
true if this secure string is marked read-only; otherwise, false.

Exceptions

Exception	Condition
ObjectDisposedException	This secure string has already been disposed.

Remarks

After an instance of SecureString is marked read-only by the MakeReadOnly method, any attempt to modify the value of the instance throws an InvalidOperationException. Use the IsReadOnly method to test whether a SecureString is read-only.

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

Reference

SecureString Class

System.Security Namespace

MakeReadOnly

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