如何通过Excel互操作对象自动调整列的大小？

Question

下面是我用来将数据加载到Excel工作表中的代码，但我希望在加载数据后自动调整列的大小。有谁知道自动调整列大小的最佳方法？

using Microsoft.Office.Interop;

public class ExportReport
{
    public void Export()
    {
        Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
        Excel.Workbook wb;
        Excel.Worksheet ws;
        Excel.Range aRange;
        object m = Type.Missing;
        string[,] data;
        string errorMessage = string.Empty;
        try
        {
            if (excelApp == null)
                throw new Exception("EXCEL could not be started.");

            // Create the workbook and worksheet.
            wb = excelApp.Workbooks.Add(Office.Excel.XlWBATemplate.xlWBATWorksheet);
            ws = (Office.Excel.Worksheet)wb.Worksheets[1];

            if (ws == null)
                throw new Exception("Could not create worksheet.");

            // Set the range to fill.
            aRange = ws.get_Range("A1", "E100");

            if (aRange == null)
                throw new Exception("Could not get a range.");

            // Load the column headers.
            data = new string[100, 5];
            data[0, 0] = "Column 1";
            data[0, 1] = "Column 2";
            data[0, 2] = "Column 3";
            data[0, 3] = "Column 4";
            data[0, 4] = "Column 5";

            // Load the data.
            for (int row = 1; row < 100; row++)
            {
                for (int col = 0; col < 5; col++)
                {
                    data[row, col] = "STUFF";
                }
            }

            // Save all data to the worksheet.
            aRange.set_Value(m, data);
            // Atuo size columns
            // TODO: Add Code to auto size columns.

            // Save the file.
            wb.SaveAs("C:\Test.xls", Office.Excel.XlFileFormat.xlExcel8, m, m, m, m, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, m, m, m, m, m);
            // Close the file.
            wb.Close(false, false, m);
        }
        catch (Exception) { }
        finally
        {
            // Close the connection.
            cmd.Close();
            // Close Excel.
            excelApp.Quit();
        }
    }
}

Answer 1

在你的TODO点添加：

aRange.Columns.AutoFit();

Answer 2

这可能为时已晚，但如果你添加

 worksheet.Columns.AutoFit();

或

 worksheet.Rows.AutoFit();

它也有效。

Answer 3

还有

aRange.EntireColumn.AutoFit();

请参阅What is the difference between Range.Columns and Range.EntireColumn。

Answer 4

看看这篇文章，它与你的问题不完全匹配，但适合它：

• Craig Murphy - Excel – wordwrap row autosize issue

Answer 5

此方法打开已创建的Excel文件，根据第3行自动调整所有工作表的所有列。如您所见，范围从excel中选择＆＃34; A3到K3＆＃34; 。

 public static void AutoFitExcelSheets()
    {
        Microsoft.Office.Interop.Excel.Application _excel = null;
        Microsoft.Office.Interop.Excel.Workbook excelWorkbook = null;
        try
        {
            string ExcelPath = ApplicationData.PATH_EXCEL_FILE;
            _excel = new Microsoft.Office.Interop.Excel.Application();
            _excel.Visible = false;
            object readOnly = false;
            object isVisible = true;
            object missing = System.Reflection.Missing.Value;

            excelWorkbook = _excel.Workbooks.Open(ExcelPath,
                   0, false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "",
                   true, false, 0, true, false, false);
            Microsoft.Office.Interop.Excel.Sheets excelSheets = excelWorkbook.Worksheets;
            foreach (Microsoft.Office.Interop.Excel.Worksheet currentSheet in excelSheets)
            {
                string Name = currentSheet.Name;
                Microsoft.Office.Interop.Excel.Worksheet excelWorksheet = (Microsoft.Office.Interop.Excel.Worksheet)excelSheets.get_Item(Name);
                Microsoft.Office.Interop.Excel.Range excelCells =
(Microsoft.Office.Interop.Excel.Range)excelWorksheet.get_Range("A3", "K3");
                excelCells.Columns.AutoFit();
            }
        }
        catch (Exception ex)
        {
            ProjectLog.AddError("EXCEL ERROR: Can not AutoFit: " + ex.Message);
        }
        finally
        {
            excelWorkbook.Close(true, Type.Missing, Type.Missing);
            GC.Collect();
            GC.WaitForPendingFinalizers();
            releaseObject(excelWorkbook);
            releaseObject(_excel);
        }
    }