IsGrantedExtensions.CanDeleteByUser(SecurityStrategy, IPermissionPolicyUser, Type, IObjectSpace, Object) Method

Checks whether the specified user can delete the object with the specified key.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v24.1.dll

NuGet Package: DevExpress.ExpressApp.Security

Declaration

C#

public static bool CanDeleteByUser(
    this SecurityStrategy security,
    IPermissionPolicyUser targetUser,
    Type type,
    IObjectSpace objectSpace,
    object targetObjectKey
)

VB.NET

<ExtensionAttribute>
Public Shared Function CanDeleteByUser(
    security As SecurityStrategy,
    targetUser As IPermissionPolicyUser,
    type As Type,
    objectSpace As IObjectSpace,
    targetObjectKey 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.
type	Type	A Type of an object this method checks.
objectSpace	IObjectSpace	An Object Space this method uses to get an object to check.
targetObjectKey	Object	An Object that is a key of an object this method checks.

Returns

Type	Description
Boolean	true, if the current user can delete objects of the specified type; 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) {
        Department department = ViewCurrentObject.Department;
        if (department != null) {
            object key = ObjectSpace.GetKeyValue(department);
            foreach (IPermissionPolicyUser user in ObjectSpace.GetObjects<ApplicationUser>()) {
                if (!securityStrategy.CanDeleteByUser(user, typeof(Department), ObjectSpace, key)) {
                    // ...
                }
            }
        }
    }
}