“索引超出數組范圍”異常C＃

Question

我正在嘗試保存Excel工作簿，但是，我收到異常“索引超出數組范圍”。

這是代碼：

public static void Update()
{

    FileInfo newFile = new FileInfo(@"C:\Users\");

    using (ExcelPackage p = new ExcelPackage(newFile))
    {
        ExcelWorkbook work = p.Workbook;
        ExcelNamedRange sourceRange = work.Names["NewTakt"];
        ExcelNamedRange destinationRange = work.Names["PreviousTakt"];

        ExcelWorksheet worksheet = sourceRange.Worksheet;
        int iRowCount = sourceRange.End.Row - sourceRange.Start.Row + 1;
        int iColCount = sourceRange.End.Column - sourceRange.Start.Column +1;
        for (int iRow = 0; iRow < iRowCount; iRow++)
        {
            for (int iColumn = 0; iColumn < iColCount; iColumn++)
            {               
                worksheet.Cells[destinationRange.Start.Row + iRow, 
                destinationRange.Start.Column + iColumn].Value = 
                worksheet.Cells[sourceRange.Start.Row + iRow, 
                sourceRange.Start.Column + iColumn].Value;
            }
        }

        p.Save();  ---> the exception happens here
    }
}

我究竟做錯了什么？ 任何幫助，我們將不勝感激。

Answer 1

在Excel中，單元格和范圍不是從0開始，而是從1開始。因此更改循環，從1開始，如下所示：

    for (int iRow = 1; iRow < iRowCount; iRow++)
    {
        for (int iColumn = 1; iColumn < iColCount; iColumn++)
        {               

Answer 2

行和列在EPPlus中為1索引，因此您的代碼應為：

    for (int iRow = 1; iRow <= iRowCount; iRow++)
    {
        for (int iColumn = 1; iColumn <= iColCount; iColumn++)
        {               
            worksheet.Cells[destinationRange.Start.Row + iRow, 
            destinationRange.Start.Column + iColumn].Value = 
            worksheet.Cells[sourceRange.Start.Row + iRow, 
            sourceRange.Start.Column + iColumn].Value;
        }
    }