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VB.NET DataTableReader.GetValues方法代碼示例

本文整理匯總了VB.NET中System.Data.DataTableReader.GetValues方法的典型用法代碼示例。如果您正苦於以下問題:VB.NET DataTableReader.GetValues方法的具體用法?VB.NET DataTableReader.GetValues怎麽用?VB.NET DataTableReader.GetValues使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。


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示例1: TestGetValues

Private Sub TestGetValues(ByVal reader As DataTableReader)

    ' Given a DataTableReader, use the GetValues
    ' method to retrieve a full row of data.

    ' Test the GetValues method, passing in an array large
    ' enough for all the columns.
    Dim values(reader.FieldCount - 1) As Object
    Dim fieldCount As Integer = reader.GetValues(values)
    Console.WriteLine("reader.GetValues retrieved {0} columns.", _
         fieldCount)
    For i As Integer = 0 To fieldCount - 1
        Console.WriteLine(values(i))
    Next

    Console.WriteLine()

    ' Now repeat, using an array that may contain a different 
    ' number of columns than the original data. This should work correctly,
    ' whether the size of the array is larger or smaller than 
    ' the number of columns.

    ' Attempt to retrieve three columns of data.
    ReDim values(2)
    fieldCount = reader.GetValues(values)
    Console.WriteLine("reader.GetValues retrieved {0} columns.", _
         fieldCount)
    For i As Integer = 0 To fieldCount - 1
        Console.WriteLine(values(i))
    Next
End Sub
開發者ID:VB.NET開發者,項目名稱:System.Data,代碼行數:31,代碼來源:DataTableReader.GetValues


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