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.NET Standard 2.0+
.NET Framework 4.5.2+
.NET Standard 2.0+
.NET Core 3.0+

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

Checks whether the current user can write an object with the specified key or this object's member.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v20.2.dll

Declaration

public static bool CanWrite(
    this SecurityStrategy security,
    Type type,
    IObjectSpace objectSpace,
    object targetObjectKey,
    string memberName = null
)
<ExtensionAttribute>
Public Shared Function CanWrite(
    security As SecurityStrategy,
    type As Type,
    objectSpace As IObjectSpace,
    targetObjectKey As Object,
    memberName As String = Nothing
) As Boolean

Parameters

Name Type Description
security SecurityStrategy

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

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 current user can write 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 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))) {
                // ...
            }
        }
    }
}
See Also