标准数字格式

Standard numeric format strings

Standard numeric format strings are used to format common numeric types. A standard numeric format string takes the form [format specifier][precision specifier] , where: Format specifier is a single alphabetic character that specifies the type of number format, for example, currency or percent.

https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings

// Display string representations of numbers for en-us culture
CultureInfo ci = new CultureInfo("en-us");

// Output floating point values
double floating = 10761.937554;
Console.WriteLine("C: {0}", floating.ToString("C", ci));           // Displays "C: $10,761.94"
Console.WriteLine("E: {0}", floating.ToString("E03", ci));         // Displays "E: 1.076E+004"
Console.WriteLine("F: {0}", floating.ToString("F04", ci));         // Displays "F: 10761.9376"
Console.WriteLine("G: {0}", floating.ToString("G", ci));           // Displays "G: 10761.937554"
Console.WriteLine("N: {0}", floating.ToString("N03", ci));         // Displays "N: 10,761.938"
Console.WriteLine("P: {0}", (floating/10000).ToString("P02", ci)); // Displays "P: 107.62 %"
Console.WriteLine("R: {0}", floating.ToString("R", ci));           // Displays "R: 10761.937554"
Console.WriteLine();

// Output integral values
int integral = 8395;
Console.WriteLine("C: {0}", integral.ToString("C", ci));           // Displays "C: $8,395.00"
Console.WriteLine("D: {0}", integral.ToString("D6", ci));          // Displays "D: 008395"
Console.WriteLine("E: {0}", integral.ToString("E03", ci));         // Displays "E: 8.395E+003"
Console.WriteLine("F: {0}", integral.ToString("F01", ci));         // Displays "F: 8395.0"
Console.WriteLine("G: {0}", integral.ToString("G", ci));           // Displays "G: 8395"
Console.WriteLine("N: {0}", integral.ToString("N01", ci));         // Displays "N: 8,395.0"
Console.WriteLine("P: {0}", (integral/10000.0).ToString("P02", ci)); // Displays "P: 83.95 %"
Console.WriteLine("X: 0x{0}", integral.ToString("X", ci));           // Displays "X: 0x20CB"
Console.WriteLine();

LogTextBox.AppendText(Environment.NewLine + "All badChan count");
LogTextBox.AppendText(string.Format("{0}{1}{2,10:P4}",Environment.NewLine , badChanCount, badChanCount1.0/(allSPallChan)));
LogTextBox.AppendText(Environment.NewLine + "All SP count");
LogTextBox.AppendText(string.Format("{0}{1}{2,10:P4}", Environment.NewLine, badSPCount, badSPCount * 1.0 / allSP));
LogTextBox.AppendText(Environment.NewLine + "Flag=2 count");
LogTextBox.AppendText(string.Format("{0}{1}{2,10:P4}", Environment.NewLine, flag2Count, flag2Count * 1.0 / (allSP*allChan)));
LogTextBox.AppendText(Environment.NewLine + "Flag=3 count");
LogTextBox.AppendText(string.Format("{0}{1}{2,10:P4}", Environment.NewLine, flag3Count, flag3Count * 1.0 / (allSP * allChan)));