Question

我尝试制作IF条件，在我的MessageBox中显示，如果freeSpaceInC/(1000000)<1024以及>1024是if (dialogResult == DialogResult.Yes)以MB显示，则以字节为单位。

我有下一个代码，但它不能变得更简单？以及如何识别下一个if static void Main() { var drive = new DriveInfo("c"); long freeSpaceInC = drive.TotalFreeSpace; var drive1 = new DriveInfo("d"); long freeSpaceInD = drive.TotalFreeSpace; if ((freeSpaceInC / (1000000) < 1024) && (freeSpaceInD / (1000000) < 1024)) { DialogResult dialogResult = MessageBox.Show("There is " + freeSpaceInC / (1000000) + "B free in C: and " + freeSpaceInD / (1000000) + "B free in D:. Do you want to continue the installation?", "MATLAB_R2008a_ENU_EU", MessageBoxButtons.YesNo); } else if ((freeSpaceInC / (1000000) > 1024) && (freeSpaceInD / (1000000) > 1024)) { DialogResult dialogResult = MessageBox.Show("There is " + freeSpaceInC / (1000000) + "MB free in C: and " + freeSpaceInD / (1000000) + "MB free in D:. Do you want to continue the installation?", "MATLAB_R2008a_ENU_EU", MessageBoxButtons.YesNo); } else if ((freeSpaceInC / (1000000) > 1024) && (freeSpaceInD / (1000000) < 1024)) { DialogResult dialogResult = MessageBox.Show("There is " + freeSpaceInC / (1000000) + "MB free in C: and " + freeSpaceInD / (1000000) + "B free in D:. Do you want to continue the installation?", "MATLAB_R2008a_ENU_EU", MessageBoxButtons.YesNo); } else if ((freeSpaceInC / (1000000) < 1024) && (freeSpaceInD / (1000000) > 1024)) { DialogResult dialogResult = MessageBox.Show("There is " + freeSpaceInC / (1000000) + "B free in C: and " + freeSpaceInD / (1000000) + "MB free in D:. Do you want to continue the installation?", "MATLAB_R2008a_ENU_EU", MessageBoxButtons.YesNo); } if (dialogResult == DialogResult.Yes) { Form1 fm1 = new Form1(); fm1.ShowDialog(); fm1.Close(); } else if (dialogResult == DialogResult.No) { Application.Exit(); } }：

$(document).on("click",function(e){
    var $target = $(e.target);
    var isTargetClick = !$target.add($target.parents()).is(".btn");
    if(isTargetClick){
    $(this).find('i').attr("class",'glyphicon glyphicon-asterisk').css( "color", "black" );
    }
});

Answer 1

你可以更简单：

static void Main()
{    
    DialogResult dialogResult = MessageBox.Show("There is " + toReadableSize(freeSpaceInC) + " free in C: and " + toReadableSize(freeSpaceInD) + " free in D:. Do you want to continue the installation?", "MATLAB_R2008a_ENU_EU", MessageBoxButtons.YesNo);

    if (dialogResult == DialogResult.Yes)
    {
        Form1 fm1 = new Form1();
        fm1.ShowDialog();
        fm1.Close();
    }            
    else if (dialogResult == DialogResult.No)
    {
        Application.Exit();
    }
}

private static string toReadableSize(int size)
{
    if(size < 1024)
        return size + "B";

    if(size < 1024*1024)
        return Math.Round(((float)size / 1024), 2) + "KB";

    if(size < 1024*1024*1024)
        return Math.Round(((float)size / (1024*1024)), 2) + "MB";

    return Math.Round(((float)size / (1024*1024*1024)), 2) + "GB";
}

Answer 2

或者你可以使用类似的东西去寻找通用的解决方案：

string TranslateSize(long value) {
    var table =
        Enumerable
        .Range(0, 5)
        .Select(x => {
            var @base = (long)Math.Pow(1024, x);
            return new {
                Start = x != 0 ? @base : 0,
                End = 1024 * @base,
                Divider = @base,
                Suffix = ""
            };})
        .Zip(
            new []{"B", "kB", "MB", "GB", "TB"},
            (l, r) => new {
                l.Start,
                l.End,
                l.Divider,
                Suffix = r
            });

    var result = table.Single(x => x.Start <= value && value < x.End);
    return result;
}

制作一个类并使转换表保持静态。

以字节和MB

2 个答案: