SqlErrorCollection.Item[Int32] 属性

定义

命名空间:

System.Data.SqlClient

程序集:

System.Data.dll

获取位于指定索引处的错误。

public:
 property System::Data::SqlClient::SqlError ^ default[int] { System::Data::SqlClient::SqlError ^ get(int index); };

public System.Data.SqlClient.SqlError this[int index] { get; }

member this.Item(int) : System.Data.SqlClient.SqlError

Default Public ReadOnly Property Item(index As Integer) As SqlError

参数

index

Int32

要检索的错误的从零开始的索引。

属性值

SqlError

一个 SqlError，包含指定索引位置的错误。

例外

IndexOutOfRangeException

索引参数超出数组界限。

示例

以下示例显示 SqlError 集合中的每个 SqlErrorCollection 。

public static void ShowSqlException(string connectionString)
{
    string queryString = "EXECUTE NonExistantStoredProcedure";

    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlCommand command = new SqlCommand(queryString, connection);
        try
        {
            command.Connection.Open();
            command.ExecuteNonQuery();
        }
        catch (SqlException ex)
        {
            DisplaySqlErrors(ex);
        }
    }
}

private static void DisplaySqlErrors(SqlException exception)
{
    for (int i = 0; i < exception.Errors.Count; i++)
    {
        Console.WriteLine("Index #" + i + "\n" +
            "Error: " + exception.Errors[i].ToString() + "\n");
    }
    Console.ReadLine();
}

Public Sub ShowSqlException(ByVal connectionString As String)
    Dim queryString As String = "EXECUTE NonExistantStoredProcedure"

    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand(queryString, connection)

        Try
            command.Connection.Open()
            command.ExecuteNonQuery()

        Catch ex As SqlException
            DisplaySqlErrors(ex)
        End Try
    End Using
End Sub

Private Sub DisplaySqlErrors(ByVal exception As SqlException)
    Dim i As Integer

    For i = 0 To exception.Errors.Count - 1
        Console.WriteLine("Index #" & i & ControlChars.NewLine & _
            "Error: " & exception.Errors(i).ToString() & ControlChars.NewLine)
    Next i
    Console.ReadLine()
End Sub

另请参阅

• Count
• ADO.NET 概述