de2bd2f9
 “wangming”
项目初始化
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using System;
namespace NCC.Core.Pay.Security
{
public static class Base64Util
{
public static bool IsBase64String(string str)
{
Span<byte> buffer = stackalloc byte[str.Length];
return Convert.TryFromBase64String(str, buffer, out _);
}
}
}
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