DataColumn.ExtendedProperties Property

Definition

Namespace:

System.Data

Assembly:

System.Data.Common.dll

Source:

DataColumn.cs

Gets the collection of custom user information associated with a DataColumn.

public:
 property System::Data::PropertyCollection ^ ExtendedProperties { System::Data::PropertyCollection ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Data.PropertyCollection ExtendedProperties { get; }

[<System.ComponentModel.Browsable(false)>]
member this.ExtendedProperties : System.Data.PropertyCollection

Public ReadOnly Property ExtendedProperties As PropertyCollection

Property Value

PropertyCollection

A PropertyCollection of custom information.

Attributes

BrowsableAttribute

Examples

The following example adds a custom property to the PropertyCollection returned by the ExtendedProperties property. The second example retrieves the custom property.

private void SetProperty(DataColumn column)
{
    column.ExtendedProperties.Add("TimeStamp", DateTime.Now);
}

private void GetProperty(DataColumn column)
{
    Console.WriteLine(column.ExtendedProperties["TimeStamp"].ToString());
}

 Private Sub SetProperty(column As DataColumn)
     column.ExtendedProperties.Add("TimeStamp", DateTime.Now)
 End Sub    
    
 Private Sub GetProperty(column As DataColumn)
     Console.WriteLine(column.ExtendedProperties("TimeStamp").ToString())
End Sub

Remarks

The ExtendedProperties property lets you store custom information with the object. For example, you may store a time when the data should be refreshed.

Extended properties must be of type String. Properties that are not of type String are not persisted when the DataColumn is written as XML.

See also

• PropertyCollection
• Using DataSets in ADO.NET