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.NET 6.0+

IsGrantedExtensions.CanWriteByUser(SecurityStrategy, IPermissionPolicyUser, Object, String) Method

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

Namespace: DevExpress.ExpressApp.Security

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

Declaration

public static bool CanWriteByUser(
    this SecurityStrategy security,
    IPermissionPolicyUser targetUser,
    object targetObject,
    string memberName = null
)

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.

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 specified user can write the specified object or its member; otherwise, false.

Remarks

Important

This overload of the CanWriteByUser method may reduce performance and cause incorrect behavior in some usage scenarios. We recommend that you always use the CanWriteByUser method’s overloads that accept an Object Space as a parameter to check permissions for a specific object.

The following example shows how to use this method.

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Security;
using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl.PermissionPolicy;
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) {
        foreach (IPermissionPolicyUser user in ObjectSpace.GetObjects<ApplicationUser>()) {
            if (!securityStrategy.CanWriteByUser(user, ViewCurrentObject.Department, nameof(Department.Office))) {
                // ...
            }
        }
    }
}
See Also