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LinqDataSourceUpdateEventArgs.OriginalObject Property

Gets the object that contains the values that were originally retrieved from the data source.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

public Object OriginalObject { get; }

Property Value

Type: System.Object
An object of the type specified in the TableName property that contains the data that was retrieved from the data source.

You can use the OriginalObject property to check the original values against the current values in the data source and to cancel the update operation or take other action.

The OriginalObject property contains values for only the properties that are persisted in view state in the Web page. A property is persisted under these circumstances:

If the UpdateCheck property is set to Never and the value is not displayed in a data-bound control, the value is not stored in the Web page. In that case, it cannot be assigned to the OriginalObject property.

The following example shows an event handler for the Updating event. The example shows how to compare properties from the OriginalObject property and the NewObject property to determine whether the value in the Category property has changed. If so, the CategoryChanged property of the object in the NewObject property is set to true.

protected void LinqDataSource_Updating(object sender, LinqDataSourceUpdateEventArgs e)
{
    Product originalProduct = (Product)e.OriginalObject;
    Product newProduct = (Product)e.NewObject;

    if (originalProduct.Category != newProduct.Category)
    {
        newProduct.CategoryChanged = true;
    }
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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