本文整理汇总了C#中System.IFormatProvider.GetFormat方法的典型用法代码示例。如果您正苦于以下问题：C# IFormatProvider.GetFormat方法的具体用法？C# IFormatProvider.GetFormat怎么用？C# IFormatProvider.GetFormat使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.IFormatProvider的用法示例。
在下文中一共展示了IFormatProvider.GetFormat方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetFormat
public class AcctNumberFormat : IFormatProvider, ICustomFormatter
{
private const int ACCT_LENGTH = 12;
public object GetFormat(Type formatType)
{
if (formatType == typeof(ICustomFormatter))
return this;
else
return null;
}
public string Format(string fmt, object arg, IFormatProvider formatProvider)
{
// Provide default formatting if arg is not an Int64.
if (arg.GetType() != typeof(Int64))
try {
return HandleOtherFormats(fmt, arg);
}
catch (FormatException e) {
throw new FormatException(String.Format("The format of '{0}' is invalid.", fmt), e);
}
// Provide default formatting for unsupported format strings.
string ufmt = fmt.ToUpper(CultureInfo.InvariantCulture);
if (! (ufmt == "H" || ufmt == "I"))
try {
return HandleOtherFormats(fmt, arg);
}
catch (FormatException e) {
throw new FormatException(String.Format("The format of '{0}' is invalid.", fmt), e);
}
// Convert argument to a string.
string result = arg.ToString();
// If account number is less than 12 characters, pad with leading zeroes.
if (result.Length < ACCT_LENGTH)
result = result.PadLeft(ACCT_LENGTH, '0');
// If account number is more than 12 characters, truncate to 12 characters.
if (result.Length > ACCT_LENGTH)
result = result.Substring(0, ACCT_LENGTH);
if (ufmt == "I") // Integer-only format.
return result;
// Add hyphens for H format specifier.
else // Hyphenated format.
return result.Substring(0, 5) + "-" + result.Substring(5, 3) + "-" + result.Substring(8);
}
private string HandleOtherFormats(string format, object arg)
{
if (arg is IFormattable)
return ((IFormattable)arg).ToString(format, CultureInfo.CurrentCulture);
else if (arg != null)
return arg.ToString();
else
return String.Empty;
}
}示例2: Main
//引入命名空间
using System;
using System.Globalization;
public enum DaysOfWeek { Monday=1, Tuesday=2 };
public class TestFormatting
{
public static void Main()
{
long acctNumber;
double balance;
DaysOfWeek wday;
string output;
acctNumber = 104254567890;
balance = 16.34;
wday = DaysOfWeek.Monday;
output = String.Format(new AcctNumberFormat(),
"On {2}, the balance of account {0:H} was {1:C2}.",
acctNumber, balance, wday);
Console.WriteLine(output);
wday = DaysOfWeek.Tuesday;
output = String.Format(new AcctNumberFormat(),
"On {2}, the balance of account {0:I} was {1:C2}.",
acctNumber, balance, wday);
Console.WriteLine(output);
}
}输出：
On Monday, the balance of account 10425-456-7890 was $16.34. On Tuesday, the balance of account 104254567890 was $16.34.