C#-Tips

July 8, 2020 11:51 PM

C#调用C++ 参数void*

c# ref C++ &

c# 判断输入数据类型

Convert.ToInt64(),如果参数非数值会异常，需要try catch

tryParse

GetType()

int   i   =   5;
Console.WriteLine( "i is an int? {0}",i.GetType()==typeof(int));
Console.WriteLine( "i is an int? {0}",typeof(int).IsInstanceOfType(i));

正则表达式

public static bool IsNumeric(string value)
{
  return Regex.IsMatch(value, @"^[+-]?\d*[.]?\d*$");
}
public static bool IsInt(string value)
{
  return Regex.IsMatch(value, @"^[+-]?\d*$");
}
public static bool IsUnsign(string value)
{
  return Regex.IsMatch(value, @"^\d*[.]?\d*$");
}

C#调用C++ 参数void*

c# 判断输入数据类型

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