C# Method to obtain the specific date of the first Monday of the specified year

This article example describes how C# obtains the specific date of the first Monday of the specified year. Share it for your reference. The details are as follows:

DateTime day = (() + "-1-1");
while ( != )
{
  day = (1);
}
DateTime firstDate = (("yyyy/MM/dd"));

I hope this article will be helpful to everyone's C# programming.