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.NET Standard 2.0+
.NET Framework 4.5.2+
.NET Standard 2.0+
.NET 5.0+

IsGrantedExtensions.CanReadByRole(SecurityStrategy, IPermissionPolicyRole, Type, IObjectSpace, Object, String) Method

Checks whether the specified role allows reading an object with the specified key or this object’s member.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v21.2.dll

Declaration

public static bool CanReadByRole(
    this SecurityStrategy security,
    IPermissionPolicyRole targetRole,
    Type type,
    IObjectSpace objectSpace,
    object targetObjectKey,
    string memberName = null
)

Parameters

Name Type Description
security SecurityStrategy

A SecurityStrategy object that specifies an application’s Security Strategy.

targetRole IPermissionPolicyRole

An IPermissionPolicyRole object that is a role 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.

Optional Parameters

Name Type Default Description
memberName String

null

A String that is a name of the target object’s member this method checks. This parameter is optional.

Returns

Type Description
Boolean

true, if the specified role allows reading an object with the specified key or this object’s member; otherwise, false.

Remarks

The following example shows how to use this method.

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Security;
using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl.EF.PermissionPolicy;
using System;
// ...
public class CheckReadPermissionController : 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 (IPermissionPolicyRole role in ObjectSpace.GetObjects<PermissionPolicyRole>()) {
                if (!securityStrategy.CanReadByRole(role, typeof(Department), ObjectSpace, key, nameof(Department.Office))) {
                    // ...
                }
            }
        }
    }
}
See Also