IsGrantedExtensions.CanWrite(SecurityStrategy, Object, String) Method

Checks whether the current user can write the specified object or its member.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v20.2.dll

NuGet Package: DevExpress.ExpressApp.Security

Declaration

C#

public static bool CanWrite(
    this SecurityStrategy security,
    object targetObject,
    string memberName = null
)

VB.NET

<ExtensionAttribute>
Public Shared Function CanWrite(
    security As SecurityStrategy,
    targetObject As Object,
    memberName As String = Nothing
) As Boolean

Parameters

Name	Type	Description
security	SecurityStrategy	A SecurityStrategy object that specifies an application’s Security Strategy.
targetObject	Object	An Object this method checks.

Optional Parameters

Name	Type	Default	Description
memberName	String	*null*	A String that is a name of the targetObject‘s member this method checks. This parameter is optional.

Returns

Type	Description
Boolean	true, if the current user can write the specified object or its members; otherwise, false.

Remarks

The following example shows how to use this method.

C#

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Security;
using System;
// ...
public class CheckWritePermissionController : ObjectViewController<ListView, Contact> {
    SecurityStrategy securityStrategy;
    protected override void OnActivated() {
        base.OnActivated();
        securityStrategy = Application.GetSecurityStrategy();
        View.CurrentObjectChanged += View_CurrentObjectChanged;
    }
    private void View_CurrentObjectChanged(object sender, EventArgs e) {
        Department department = ViewCurrentObject.Department;
        if (department!= null && !securityStrategy.CanWrite(department, nameof(Department.Office))) {
            // ...
        }
    }
}

VB.NET

Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.Security
Imports System
' ...
Public Class CheckWritePermissionController
    Inherits ObjectViewController(Of ListView, Contact)
    Private securityStrategy As SecurityStrategy
    Protected Overrides Sub OnActivated()
        MyBase.OnActivated()
        securityStrategy = Application.GetSecurityStrategy()
        AddHandler View.CurrentObjectChanged, AddressOf View_CurrentObjectChanged
    End Sub
    Private Sub View_CurrentObjectChanged(ByVal sender As Object, ByVal e As EventArgs)
        Dim department As Department = ViewCurrentObject.Department
        If department IsNot Nothing AndAlso Not securityStrategy.CanWrite(department, NameOf(Department.Office)) Then
            ' ...
        End If
    End Sub
End Class