C# - Excel/InteropServices 替换方法有问题

Question

所以搜索返回了一些关于如何使用 Replace 方法的结果，但我还没有得到任何工作。希望你们能帮助我指出正确的方向！

这就是我所拥有的。调用 Replace 方法时出现错误。我怀疑我在 Range 上做错了什么，但不确定。

private Process DoExcelWork(Process excelProc, string filePath)
{
    // Initialize Excel Application
    Excel.Application excelApp = new Excel.Application();
    excelApp.Visible = false;

    // Get the process
    Process[] possibleProcesses = Process.GetProcessesByName("Excel");
    excelProc = possibleProcesses[0];

    // Empty Object for optional arguments
    object optional = System.Reflection.Missing.Value;

    Excel.Workbook excelWorkbook = excelApp.Workbooks.Open(filePath, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional);

    // Seems to be necessary to do stuff to the file
    excelWorkbook.VBProject.References.AddFromGuid("{0002E157-0000-0000-C000-000000000046}", 5, 3);

    foreach (Excel.Worksheet excelWorksheet in excelWorkbook.Worksheets)
    {
        Excel.Range lastCell = excelWorksheet.Cells.SpecialCells(Excel.XlCellType.xlCellTypeLastCell, optional);
        Excel.Range excelRange = excelWorksheet.get_Range("A1", lastCell);

        excelRange.Replace("Blue", "Red", Excel.XlLookAt.xlPart, Excel.XlSearchOrder.xlByRows, false, optional, optional, optional);
    }                   

    excelWorkbook.Save();
    excelWorkbook.Close(0);

    // Quit Excel 
    excelApp.Quit();

    // Release
    NAR(excelApp);

    return excelProc;
} 

这是错误：

System.Runtime.InteropServices.COMException (0x800706BE)：远程 过程调用失败。 （来自 HRESULT 的异常：0x800706BE）在 System.RuntimeType.ForwardCallToInvokeMember（字符串成员名称， BindingFlags 标志、对象目标、Int32[] aWrapperTypes、MessageData& msgData）在 Microsoft.Office.Interop.Excel.Range.Replace（对象什么， 对象替换、对象 LookAt、对象 SearchOrder、对象 MatchCase、对象 MatchByte、对象 SearchFormat、对象 替换格式）

Answer 1

所以我从来没有没有让这个工作。我怀疑 Microsoft not supporting 这种服务器端自动化与它有关。

我最终做了一个解决方法，我遍历每个单元格并手动更新值（如果满足搜索条件）。就我而言，我只是在寻找其中有公式的单元格，所以我也做了一些其他的事情。但这是我最终的结果：

// Initialize Excel Application
Excel.Application excelApp = null;
excelApp = new Excel.Application();
excelApp.Visible = false;
excelApp.DisplayAlerts = false;

// Get the process. Not as precise as would like, but probably the best we can get from an .ASP call
Process[] possibleProcesses = Process.GetProcessesByName("Excel");
excelProc = possibleProcesses[0];

// Object for optional arguments when creating Excel Workbook
object optional = System.Reflection.Missing.Value;

Excel.Workbook excelWorkbook = excelApp.Workbooks.Open(filePath, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional, optional);
excelWorkbook.CheckCompatibility = false;
excelWorkbook.DoNotPromptForConvert = true;

// Create array with Custom Properties of workbook
dynamic properties = excelWorkbook.CustomDocumentProperties;

// Iterate through each worksheet in the workbook
foreach (Excel.Worksheet excelWorksheet in excelWorkbook.Worksheets)
{
    // Checking to see if any cells are being used. If no cells are used, setting ACTUAL used range causes an error.
    if (excelWorksheet.UsedRange.Cells.Count >=1)
    {
        try
        {
            // Because these sheets have thousands of edited (but unused) cells, can't use UsedRange without major performance issue. Getting last used cell manually.
            int lastRow = 1;
            int lastCol = 1;
            try
            {
                lastRow = excelWorksheet.Cells.Find("*", excelWorksheet.get_Range("IV65536", optional), Excel.XlFindLookIn.xlValues, Excel.XlLookAt.xlPart, Excel.XlSearchOrder.xlByRows, Excel.XlSearchDirection.xlPrevious, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value).Row;
                lastCol = excelWorksheet.Cells.Find("*", excelWorksheet.get_Range("IV65536", optional), Excel.XlFindLookIn.xlValues, Excel.XlLookAt.xlPart, Excel.XlSearchOrder.xlByColumns, Excel.XlSearchDirection.xlPrevious, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value).Column;
            }
            catch { }

            Excel.Range excelRange = excelWorksheet.get_Range(excelWorksheet.Cells[1, 1], excelWorksheet.Cells[lastRow, lastCol]);

            // Creating array of cells in range, because search operations are faster on array than on cells.
            dynamic cells = excelRange.Cells;

            string cellAddress = "";
            string cellFormula = "";
            string formulaParameter = "";
            int parameterLength = 0;

            // Search array for cells that have functions. If a function exists, replace it with the value that should be returned from the function.
            foreach (dynamic c in cells)
            {
                if (c.HasFormula())
                {
                    cellFormula = c.formula;
                    cellAddress = c.address.Replace("$", "");

                    if ((cellFormula.Length > 50) && (cellFormula.Substring(0, 50) == "=YOURCUSTOMEXCELFUNCTIONHERE"))
                    {
                        // Get custom functions, replace functions with the values returned from those functions
                        parameterLength = cellFormula.Substring(52).Length;
                        formulaParameter = cellFormula.Substring(52, parameterLength - 2);

                        foreach (dynamic p in properties)
                        {
                            if (p.name == formulaParameter)
                            {
                                excelWorksheet.get_Range(cellAddress, optional).Value2 = p.Value;
                            }
                        }
                    }
                    else
                    {
                        // Get non-custom functions, replace functions with the values returned from those functions                                                       
                        excelWorksheet.get_Range(cellAddress, optional).Value2 = c.Value2;
                    }
                }
            }
        }
        catch { }
    }
}