Question

我有一张包含许多图像的表，并希望调整行高在这篇文章中（尚未回答）Epplus row height issue有人遇到了相同的性能问题。

要解决此问题，请考虑全局设置行高并禁用每行的自定义Rowheight。但是例如Row(4).CustomHeight = false;不会使用DefaultHeigth ...它只会调整高度以适应文本。

问题：有没有办法在EPPlus甚至OpenXML中实现我想要的东西（教导一行从默认高度，插入文本后取高度），而不是性能问题？

我写了一个用于复制的NUnit测试（在安装了excel的Windows 10上测试过）。我真正的应用程序所有图像都不同，这只是为了测试。



[Test]
public void SettingRowHeight() {
    ExcelPackage pkg = new ExcelPackage();
    ExcelWorksheet sheet = pkg.Workbook.Worksheets.Add("Test");
    Stopwatch sw = new Stopwatch();
    sw.Start();
    Bitmap bmp = new Bitmap(100,100);
    int targetcolindex = 21;
    // adjust for scaling the problem 100 (10sec)is OK 
    // 500 will slow drastically(~19min)
    int rocount = 500;
    //Inserting Test Data
    for (int i = 1; i < rocount; i++)
    {
        for (int k = 1; k < 20; k++)
        {
            sheet.Cells[i, k].Value = "test" + i;
        }
        var picture = sheet.Drawings.AddPicture("pic" + i.ToString() + targetcolindex.ToString(), bmp);
        picture.From.Column = targetcolindex - 1;
        picture.From.Row = i - 1;
        picture.From.ColumnOff = 2 * 9525; 
        picture.From.RowOff = 2 * 9525;                       
    }
    Console.WriteLine($"Inserting {rocount} Cells: {sw.ElapsedMilliseconds} ms");
    sw.Stop();
    sw.Start();
    for (int i = 1; i < rocount; i++)
    {
        sheet.Row(i).Height = 50;
    }
    Console.WriteLine($"Set Height {rocount} Cells: {sw.ElapsedMilliseconds} ms");
    sw.Stop();

    sw.Restart();
    sheet.Row(1).Height = 30;
    Console.WriteLine($"Set Height Row 1: {sw.ElapsedMilliseconds} ms");
    sw.Restart();
    sheet.Row(2).Height = 30;
    Console.WriteLine($"Set Height Row 2: {sw.ElapsedMilliseconds} ms");
    sw.Restart();
    sheet.Row(3).Height = 30;
    Console.WriteLine($"Set Height Row 3: {sw.ElapsedMilliseconds} ms");
    sw.Restart();
    sheet.Row(rocount).Height = 30;
    Console.WriteLine($"Set Height Row {rocount}: {sw.ElapsedMilliseconds} ms");

    // trying to set the rowHeight globally so that above code can be skipped
    sheet.DefaultRowHeight = 50;
    // just for checking if something has changed
    sheet.Row(4).Height = 70;
    // this should remove the height and set it to Default value? if not: is there a way to do that?
    sheet.Row(4).CustomHeight = false;
    // this doesnt work either
    sheet.Row(6).Height = sheet.DefaultRowHeight;            
    sheet.Row(6).CustomHeight = false;
    // for looking over the result visually
    var filename = Path.GetTempFileName()+".xlsx";
    pkg.SaveAs(new System.IO.FileInfo(filename));
    System.Diagnostics.Process.Start(filename);
}

[Test] public void SettingRowHeight() { ExcelPackage pkg = new ExcelPackage(); ExcelWorksheet sheet = pkg.Workbook.Worksheets.Add("Test"); Stopwatch sw = new Stopwatch(); sw.Start(); Bitmap bmp = new Bitmap(100,100); int targetcolindex = 21; // adjust for scaling the problem 100 (10sec)is OK // 500 will slow drastically(~19min) int rocount = 500; //Inserting Test Data for (int i = 1; i < rocount; i++) { for (int k = 1; k < 20; k++) { sheet.Cells[i, k].Value = "test" + i; } var picture = sheet.Drawings.AddPicture("pic" + i.ToString() + targetcolindex.ToString(), bmp); picture.From.Column = targetcolindex - 1; picture.From.Row = i - 1; picture.From.ColumnOff = 2 * 9525; picture.From.RowOff = 2 * 9525; } Console.WriteLine($"Inserting {rocount} Cells: {sw.ElapsedMilliseconds} ms"); sw.Stop(); sw.Start(); for (int i = 1; i < rocount; i++) { sheet.Row(i).Height = 50; } Console.WriteLine($"Set Height {rocount} Cells: {sw.ElapsedMilliseconds} ms"); sw.Stop(); sw.Restart(); sheet.Row(1).Height = 30; Console.WriteLine($"Set Height Row 1: {sw.ElapsedMilliseconds} ms"); sw.Restart(); sheet.Row(2).Height = 30; Console.WriteLine($"Set Height Row 2: {sw.ElapsedMilliseconds} ms"); sw.Restart(); sheet.Row(3).Height = 30; Console.WriteLine($"Set Height Row 3: {sw.ElapsedMilliseconds} ms"); sw.Restart(); sheet.Row(rocount).Height = 30; Console.WriteLine($"Set Height Row {rocount}: {sw.ElapsedMilliseconds} ms"); // trying to set the rowHeight globally so that above code can be skipped sheet.DefaultRowHeight = 50; // just for checking if something has changed sheet.Row(4).Height = 70; // this should remove the height and set it to Default value? if not: is there a way to do that? sheet.Row(4).CustomHeight = false; // this doesnt work either sheet.Row(6).Height = sheet.DefaultRowHeight; sheet.Row(6).CustomHeight = false; // for looking over the result visually var filename = Path.GetTempFileName()+".xlsx"; pkg.SaveAs(new System.IO.FileInfo(filename)); System.Diagnostics.Process.Start(filename); }

编辑：我当前的解决方法：在插入任何图像之前设置rowheigth。即使删除所有图像，设置高度，重新添加图像也会从文档中的特定图像数开始变得更快。

c＃EPPlus（或OpenXML）全局设置Rowheight

0 个答案: