VersionNotFoundException Classe

Definizione

public ref class VersionNotFoundException : System::Data::DataException

[System.Serializable]
public class VersionNotFoundException : System.Data.DataException

public class VersionNotFoundException : System.Data.DataException

[<System.Serializable>]
type VersionNotFoundException = class
    inherit DataException

type VersionNotFoundException = class
    inherit DataException

Public Class VersionNotFoundException
Inherits DataException

Ereditarietà

Object

Exception

SystemException

DataException

VersionNotFoundException

Attributi

SerializableAttribute

Esempio

Nell'esempio seguente viene creato un DataTable oggetto con uno DataColumn e dieci DataRow oggetti . Dopo l'eliminazione di , DataRowil tentativo di restituire la versione corrente della riga rimossa causa la generazione di un'eccezione VersionNotFoundException .

private void DemonstrateVersionNotFoundException()
{
    // Create a DataTable with one column.
    DataTable table = new DataTable("NewTable");
    DataColumn column = new DataColumn("NewColumn");
    table.Columns.Add(column);
    DataRow newRow;

    for(int i = 0;i <10;i++)
    {
        newRow = table.NewRow();
        newRow["NewColumn"] = i;
        table.Rows.Add(newRow);
    }
    table.AcceptChanges();

    try
    {
        Console.WriteLine("Trying...");
        DataRow removedRow = table.Rows[9];
        removedRow.Delete();
        removedRow.AcceptChanges();
        // Try to get the Current row version.
        Console.WriteLine(removedRow[0,DataRowVersion.Current]);
    }
    catch(System.Data.VersionNotFoundException)
    {
        Console.WriteLine("Current version of row not found.");
    }
}

Private Sub DemonstrateVersionNotFoundException()
    ' Create a DataTable with one column.
    Dim table As New DataTable("NewTable")
    Dim column As New DataColumn("NewColumn")
    table.Columns.Add(column)
    Dim newRow As DataRow
    
    Dim i As Integer
    For i = 0 To 9
        newRow = table.NewRow()
        newRow("NewColumn") = i
        table.Rows.Add(newRow)
    Next i
    table.AcceptChanges()

    Try
        Console.WriteLine("Trying...")
        Dim removedRow As DataRow = table.Rows(9)
        removedRow.Delete()
        removedRow.AcceptChanges()

        ' Try to get the Current row version.
        Console.WriteLine(removedRow(0, DataRowVersion.Current))
    
    Catch e As System.Data.VersionNotFoundException
        Console.WriteLine("Current version of row not found.")
    End Try
End Sub