54 lines
1.9 KiB
C#
54 lines
1.9 KiB
C#
namespace YLErp.Helpers
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{
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public static class StringHelper
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{
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public static bool IsNullOrWhiteSpace(this string str)
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{
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return string.IsNullOrWhiteSpace(str);
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}
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public static string GetFixedStr(string desc1, string desc2, int total1 = 40, int total2 = 20)
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{
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int remainLength = total1 - System.Text.Encoding.Default.GetBytes(desc1).Length;
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int remainLength2 = total2 - System.Text.Encoding.Default.GetBytes(desc2).Length;
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return desc1 + "".PadRight(remainLength, " "[0]) + desc2 + "".PadRight(remainLength2, " "[0]);
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}
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/// <summary>
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/// 根据targetStr长度设置
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/// </summary>
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/// <param name="desc1"></param>
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/// <returns></returns>
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public static string GetFixedStr2(string desc1, string targetStr)
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{
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int targetLength = System.Text.Encoding.Default.GetBytes(targetStr).Length;
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int useLength = System.Text.Encoding.Default.GetBytes((desc1 + "")).Length;
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int remainLength = targetLength - useLength;
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if (remainLength < 0)
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{
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remainLength = 0;
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}
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return desc1 + "".PadRight(remainLength, " "[0]);
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}
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/// <summary>
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/// 以精确模式转换浮点数为特定小数精度的字符串，使用四舍五入模式,
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/// 但111111111111.2249999999999999需要转为111111111111.22而不是111111111111.23
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/// </summary>
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public static string ToFixedPrecise(double? value, int decimalSize = 2)
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{
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if (value == null)
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{
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return string.Empty;
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}
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if (decimalSize < 1)
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{
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return Math.Floor(value.Value).ToString("0");
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}
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var decExp = Math.Pow(10, decimalSize + 1);
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return (Math.Floor(value.Value * decExp) / decExp).ToString("f" + decimalSize);
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}
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}
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}
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