DataSourceView.CanDelete Property

Reference

Definition

Namespace:: System.Web.UI

Assembly:: System.Web.dll

Important

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Gets a value indicating whether the DataSourceView object associated with the current DataSourceControl object supports the ExecuteDelete(IDictionary, IDictionary) operation.

public:
 virtual property bool CanDelete { bool get(); };

public virtual bool CanDelete { get; }

member this.CanDelete : bool

Public Overridable ReadOnly Property CanDelete As Boolean

Property Value

Boolean

true if the operation is supported; otherwise, false. The base class implementation returns false.

Examples

The following code example demonstrates how to override the CanDelete property and the ExecuteDelete method in a class that extends the DataSourceView class. This code example is part of a larger example provided for the DataSourceView class.

// The CsvDataSourceView does not currently
// permit deletion. You can modify or extend
// this sample to do so.
public override bool CanDelete {
    get {
        return false;
    }
}
protected override int ExecuteDelete(IDictionary keys, IDictionary values)
{
    throw new NotSupportedException();
}

' The CsvDataSourceView does not currently
' permit deletion. You can modify or extend
' this sample to do so.
Public Overrides ReadOnly Property CanDelete() As Boolean
   Get
      Return False
   End Get
End Property

Protected Overrides Function ExecuteDelete(keys As IDictionary, values As IDictionary) As Integer
   Throw New NotSupportedException()
End Function 'ExecuteDelete

Remarks

The CanDelete property reflects not only a capability of the data source control, but also whether it is currently appropriate to perform an operation. For example, even though a data source view supports the ExecuteDelete operation in general, if a required property or some other data is not set, the CanDelete property returns false, as a delete operation would fail.

Applies to

Proizvod	Verzije
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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