SqlCeErrorCollection 类

2011-01-17

收集 SQL Server Compact 3.5 的 .NET Compact Framework 数据访问接口产生的所有错误。无法继承此类。

命名空间： System.Data.SqlServerCe
程序集： System.Data.SqlServerCe（在 System.Data.SqlServerCe.dll 中）

语法

声明
Public NotInheritable Class SqlCeErrorCollection _
    Implements ICollection, IEnumerable
用法
Dim instance As SqlCeErrorCollection

public sealed class SqlCeErrorCollection : ICollection, 
    IEnumerable

public ref class SqlCeErrorCollection sealed : ICollection, 
    IEnumerable

[<SealedAttribute>]
type SqlCeErrorCollection =  
    class
        interface ICollection
        interface IEnumerable
    end

public final class SqlCeErrorCollection implements ICollection, IEnumerable

注释

该类是由 SqlCeException 创建的，用以收集 SqlCeError 类的实例。SqlCeErrorCollection 始终包含至少一个 SqlCeError 类实例。

示例

下面的示例显示 SqlCeErrorCollection 集合中的每个 SqlCeError。

Public Sub DisplaySqlCeErrors(ByVal errorCollection As SqlCeErrorCollection)

    Dim err As SqlCeError
    Dim bld As New StringBuilder()

    For Each err In errorCollection
        bld.Append((ControlChars.Cr & " Error Code: " & err.HResult.ToString("X")))
        bld.Append((ControlChars.Cr & " Message   : " & err.Message))
        bld.Append((ControlChars.Cr & " Minor Err.: " & err.NativeError))
        bld.Append((ControlChars.Cr & " Source    : " & err.Source))

        Dim numPar As Integer
        For Each numPar In err.NumericErrorParameters
            If 0 <> numPar Then
                bld.Append((ControlChars.Cr & " Num. Par. : " & numPar))
            End If
        Next numPar

        Dim errPar As String
        For Each errPar In err.ErrorParameters
            If [String].Empty <> errPar Then
                bld.Append((ControlChars.Cr & " Err. Par. : " & errPar))
            End If
        Next errPar

        MessageBox.Show(bld.ToString())
        bld.Remove(0, bld.Length)
    Next err

End Sub 'DisplaySqlCeErrors

public void DisplaySqlCeErrors(SqlCeErrorCollection errorCollection ) {
    StringBuilder bld = new StringBuilder();

    foreach (SqlCeError err in errorCollection) {
        bld.Append("\n Error Code: " + err.HResult.ToString("X"));
        bld.Append("\n Message   : " + err.Message);
        bld.Append("\n Minor Err.: " + err.NativeError);
        bld.Append("\n Source    : " + err.Source);

        foreach (int numPar in err.NumericErrorParameters) {
            if (0 != numPar) bld.Append("\n Num. Par. : " + numPar);
        }

        foreach (string errPar in err.ErrorParameters) {
            if (String.Empty != errPar) bld.Append("\n Err. Par. : " + errPar);
        }

        MessageBox.Show(bld.ToString());
        bld.Remove(0, bld.Length);
    }
}