3

对 C# 有点陌生，并试图扩大我的能力。我在VB中有这段代码：

    Private Sub BreakdownFilesToCompare(ByRef file1BReader As BinaryReader, _
                                  ByRef file2BReader As BinaryReader, _
                                  ByRef firstFile As StandardFormatFile, _
                                  ByRef secondFile As StandardFormatFile)

    file1BReader.ReadInt32()
    file2BReader.ReadInt32()

    firstFile.numberOfSeries = file1BReader.ReadInt32
    secondFile.numberOfSeries = file2BReader.ReadInt32

    If firstFile.numberOfSeries <> secondFile.numberOfSeries Then
        WriteToConsole("The number of Elements the two files do not match...Stopping")
        Exit Sub
    End If

    For i As Integer = 0 To firstFile.numberOfSeries - 1

        Dim tempSeriesData1 As New StandardFormatFileSeries
        Dim tempSeriesData2 As New StandardFormatFileSeries

        tempSeriesData1.standardNumOfElements = file1BReader.ReadInt32
        tempSeriesData1.standardSeriesName = GetSeriesName(file1BReader)

        tempSeriesData2.standardNumOfElements = file2BReader.ReadInt32
        tempSeriesData2.standardSeriesName = GetSeriesName(file2BReader)


        For j As Integer = 0 To tempSeriesData1.standardNumOfElements - 1
            Dim tempElementData1 As New StandardFormatFileElement


            tempElementData1.standardX_TimeValue = file1BReader.ReadSingle
            tempElementData1.standardY_SampleValue = file1BReader.ReadSingle
            tempSeriesData1.standardDataElements.Add(tempElementData1)
        Next

        For k As Integer = 0 To tempSeriesData2.standardNumOfElements - 1
            Dim tempElementData2 As New StandardFormatFileElement

            tempElementData2.standardX_TimeValue = file2BReader.ReadSingle
            tempElementData2.standardY_SampleValue = file2BReader.ReadSingle

            tempSeriesData2.standardDataElements.Add(tempElementData2)



        Next

        firstFile.standardSeriesData.Add(tempSeriesData1)
        secondFile.standardSeriesData.Add(tempSeriesData2)


    Next
End Sub


Private Function GetSeriesName(ByRef bReader As BinaryReader) As String
    Dim enc As New System.Text.UTF8Encoding()
    Dim title As Byte()

    title = bReader.ReadBytes(128)
    Return enc.GetString(title)

End Function

现在这就是我在 C# 中所拥有的

    private void compareStandardFormat(ref BinaryReader file1breader,ref  BinaryReader file2breader,
                                        ref FileStructure firstfile,ref FileStructure secondfile)
    {
        file1breader.ReadInt32();
        file2breader.ReadInt32();

        firstfile.numberofseries = file1breader.ReadInt32();
        secondfile.numberofseries = file2breader.ReadInt32();

        if (firstfile.numberofseries != secondfile.numberofseries)
        {
            writeToConsole("The number of Elements the two files do not match...Stopping");
            return;
        }

        for (int i = 0; i < firstfile.numberofseries - 1; i++)
        {
            StandardFormatFileSeries tempseriesdata1 = new StandardFormatFileSeries();
            StandardFormatFileSeries tempseriesdata2 = new StandardFormatFileSeries();

            tempseriesdata1.standardnumofelements  = file1breader.ReadInt32();
            tempseriesdata1.standardseriesname  = getSeriesName(ref file1breader).Trim();

            tempseriesdata2.standardnumofelements = file2breader.ReadInt32();
            tempseriesdata2.standardseriesname = getSeriesName(ref file2breader).Trim();

            for (int j = 0; j < tempseriesdata1.standardnumofelements - 1; j++)
            {
                StandardFormatFileElement tempElementData1 = new StandardFormatFileElement();

                tempElementData1.standardx_timevalue  = Convert.ToString (file1breader.ReadSingle());
                tempElementData1.standardy_samplevalue = Convert.ToString(file1breader.ReadSingle());

                tempseriesdata1.standarddataelements.Add(tempElementData1);
            }

            for (int k = 0; k < tempseriesdata2.standardnumofelements - 1; k++)
            {
                StandardFormatFileElement tempElementData2 = new StandardFormatFileElement();

                tempElementData2.standardx_timevalue = Convert.ToString(file2breader.ReadSingle());
                tempElementData2.standardy_samplevalue = Convert.ToString(file2breader.ReadSingle());

                tempseriesdata2.standarddataelements.Add(tempElementData2);
            }

            firstfile.standardseriesdata.Add(tempseriesdata1);
            secondfile.standardseriesdata.Add(tempseriesdata2);
            }

    }

    private string getSeriesName(ref BinaryReader bReader)
    {
        UTF8Encoding enc = new UTF8Encoding();
        byte[] title;

        title = bReader.ReadBytes(128);

        return enc.GetString(title);

    }

VB 方式确实正确读取了二进制阅读器并正确索引到下一个位置...... C# 方式没有。它在第一次迭代后失去了轨道……为什么？？？

请帮忙。

4

4 回答 4

17

我认为这些是不同的：

For i As Integer = 0 To firstFile.numberOfSeries - 1
for (int i = 0; i < firstfile.numberofseries - 1; i++)

我认为直接的 C# 翻译是：

for (int i = 0; i <= firstfile.numberofseries - 1; i++)

或更好：

for (int i = 0; i < firstfile.numberofseries; i++)
于 2010-08-10T15:43:57.127 回答
5

我对 VB 不熟悉，但看起来您确实在集合的结尾处停止，因为您既要从元素计数中减去 1，又要在循环中使用“小于”（<）运算符。这意味着您的循环将在最后一项之前退出。

我建议从循环条件中删除“- 1”。或者，您可以切换到“小于或等于”（<=），但在这种情况下前者更有意义。

于 2010-08-10T15:43:27.787 回答
4

我认为这是 for 运算符？

在 C# 中

for (int i = 0; i < 10; i++)
{
   // inner loop
}

这将运行 10 次

在VB中

For i As Integer = 0 To 10
   rem inner loop
Next

这将运行 11 次。

所以解决方法是：

在 C# 循环检查中去掉“- 1”

为清楚起见，我将 VB 代码编写为

For i As Integer = 1 To firstFile.numberOfSeries

和 C# 代码为

for (int i = 0; i < firstfile.numberofseries; i++)

因为在每种情况下，firstFile.numberOfSeries 都是循环运行的次数。

于 2010-08-10T15:45:31.090 回答
1

尝试改变：

for (int i = 0; i < firstfile.numberofseries - 1; i++)
{
}

至

int index = firstfile.numberofseries;
for (int i = 0; i < index; i++)
{
}

在不知道它定义的结构类型的情况下，我猜测当您添加到 firstfile/secondfile 结构时，循环会被抛出异常。

另外，请接受解决您的挑战的答案。很高兴知道它已经修复，而不是猜测并试图深入挖掘一个不存在的问题。:)

于 2010-08-10T16:27:14.137 回答