Here’s some code for listing down the first Monday of every month in an year using C# and VB.NET. The Monday’s listed in this example are for the year 2010

C#

public static void Main(string[] args){    for (int mth = 1; mth <= 12; mth++)    {        DateTime dt = new DateTime(2010, mth, 1);        while (dt.DayOfWeek != DayOfWeek.Monday)        {            dt = dt.AddDays(1);        }        Console.WriteLine(dt.ToLongDateString());    }    Console.ReadLine();}

VB.NET

Public Shared Sub Main(ByVal args() As String)    For mth As Integer = 1 To 12        Dim dt As New DateTime(2010, mth, 1)        Do While dt.DayOfWeek <> DayOfWeek.Monday            dt = dt.AddDays(1)        Loop        Console.WriteLine(dt.ToLongDateString())    Next mth    Console.ReadLine()End Sub

OUTPUT