IsGrantedExtensions.CanWrite(IRequestSecurityStrategy, Type, IObjectSpace, Object, String) Method

Checks whether the current user can write an object with the specified key. If the optional memberName parameter is specified, the method checks whether the current user can write the specified object member.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v25.1.dll

NuGet Package: DevExpress.ExpressApp.Security

Declaration

C#

public static bool CanWrite(
    this IRequestSecurityStrategy security,
    Type type,
    IObjectSpace objectSpace,
    object targetObjectKey,
    string memberName = null
)

VB.NET

<ExtensionAttribute>
Public Shared Function CanWrite(
    security As IRequestSecurityStrategy,
    type As Type,
    objectSpace As IObjectSpace,
    targetObjectKey As Object,
    memberName As String = Nothing
) As Boolean

Parameters

Name	Type	Description
security	IRequestSecurityStrategy	An object that specifies the application’s security strategy.
type	Type	The object’s type.
objectSpace	IObjectSpace	An Object Space used to obtain data to calculate this security criterion.
targetObjectKey	Object	The object’s key.

Optional Parameters

Name	Type	Default	Description
memberName	String	null	A name of the target object’s member to check.

Returns

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

Remarks

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) {
            object key = ObjectSpace.GetKeyValue(department);
            if (!securityStrategy.CanWrite(typeof(Department), ObjectSpace, key, nameof(Department.Office))) {
                // ...
            }
        }
    }
}