IsGrantedExtensions.CanDeleteByUser(SecurityStrategy, IPermissionPolicyUser, Object) Method

Checks whether the specified user can delete the specified object.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v19.2.dll

Declaration

C#

public static bool CanDeleteByUser(
    this SecurityStrategy security,
    IPermissionPolicyUser targetUser,
    object targetObject
)

VB.NET

<ExtensionAttribute>
Public Shared Function CanDeleteByUser(
    security As SecurityStrategy,
    targetUser As IPermissionPolicyUser,
    targetObject As Object
) As Boolean

Parameters

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

Returns

Type	Description
Boolean	true, if the specified user can delete the specified object; otherwise, false.

Remarks

The following example shows how to use this method.

C#

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Security;
using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl.PermissionPolicy;
using System;
// ...
public class CheckDeletePermissionController : 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) {
        foreach (IPermissionPolicyUser user in ObjectSpace.GetObjects<PermissionPolicyUser>()) {
            if (!securityStrategy.CanDeleteByUser(user, ViewCurrentObject)) {
                // ...
            }
        }
    }
}

VB.NET

Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.Security
Imports DevExpress.Persistent.Base
Imports DevExpress.Persistent.BaseImpl.PermissionPolicy
Imports System
' ...
Public Class CheckDeletePermissionController
    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)
        For Each user As IPermissionPolicyUser In ObjectSpace.GetObjects(Of PermissionPolicyUser)()
            If Not securityStrategy.CanDeleteByUser(user, ViewCurrentObject) Then
                ' ...
            End If
        Next user
    End Sub
End Class