C#:如何访问 Excel 单元格？

Question

我正在尝试打开一个 Excel 文件并用数据填充它的单元格？到目前为止，我已经完成了以下编码。

目前我正处于使用以下代码的阶段，但我仍然遇到错误:

Microsoft.Office.Interop.Excel.ApplicationClass appExcel =
                new Microsoft.Office.Interop.Excel.ApplicationClass();
try
{
    // is there already such a file ?
    if (System.IO.File.Exists("C:\\csharp\\errorreport1.xls"))
    {
        // then go and load this into excel
        Microsoft.Office.Interop.Excel.Workbooks.Open(
            "C:\\csharp\\errorreport1.xls", true, false, 
            Missing.Value, Missing.Value, Missing.Value, Missing.Value,
            Missing.Value, Missing.Value, Missing.Value, Missing.Value, 
            Missing.Value, Missing.Value, Missing.Value, Missing.Value);
    }
    else
    {
        // if not go and create a workbook:
        newWorkbook = appExcel.Workbooks.Add(XlWBATemplate.xlWBATWorksheet);
        Microsoft.Office.Interop.Excel._Worksheet excelWorksheet = 
            (Microsoft.Office.Interop.Excel._Worksheet)
                newWorkBook.Worksheets.get_Item(1);
    } 
i++;
j = 1;

j++;
objsheet.Cells(i, j).Value = "Tabelle: " + rs.Fields["Table_Name"];
j++;
objsheet.Cells(i, j).Value = "kombinationsschluessel:FALL " 
                                + rs3.Fields[1].Value;
j++;
objsheet.Cells(i, j).Value = "Null Value: ";
j++;
objsheet.Cells(i, j).Value = "Updated with 888";

这些是我遇到的前 2 个错误:

Error 1 An object reference is required for the nonstatic field, method, or
        property 'Microsoft.Office.Interop.Excel.Workbooks.Open(string, object,
        object, object, object, object, object, object, object, object, object,
        object, object, object, object)'

Error 2 The name 'newWorkbook' does not exist in the current context

Answer 1

如果您正在尝试自动化 Excel，您可能不应该打开 Word 文档并使用 Word 自动化 ;)

看看这个，它应该让你开始，

http://www.codeproject.com/KB/office/package.aspx

这是一些代码。它取 self 的一些代码并删除了很多东西，所以它什么都不做，可能无法编译或正常工作，但它应该能让你继续。它以阅读为导向，但应该为您指明正确的方向。

Microsoft.Office.Interop.Excel.Worksheet sheet = newWorkbook.ActiveSheet;

if ( sheet != null )
{
    Microsoft.Office.Interop.Excel.Range range = sheet.UsedRange;
    if ( range != null )
    {
        int nRows = usedRange.Rows.Count;
        int nCols = usedRange.Columns.Count;
        foreach ( Microsoft.Office.Interop.Excel.Range row in usedRange.Rows )
        {
            string value = row.Cells[0].FormattedValue as string;
        }
    }
 }

你也可以这样做

Microsoft.Office.Interop.Excel.Sheets sheets = newWorkbook.ExcelSheets;

if ( sheets != null )
{
     foreach ( Microsoft.Office.Interop.Excel.Worksheet sheet in sheets )
     {
          // Do Stuff
     }
}

如果需要插入行/列

// Inserts a new row at the beginning of the sheet
Microsoft.Office.Interop.Excel.Range a1 = sheet.get_Range( "A1", Type.Missing );
a1.EntireRow.Insert( Microsoft.Office.Interop.Excel.XlInsertShiftDirection.xlShiftDown, Type.Missing );