<div>
<div class="content wysiwyg-content">
Revise below to get last day of <br />
this month instead of TODAY.<br />
--------------------------<wbr />----------<wbr />--------<br />
&nbsp; &nbsp; &nbsp; private void button1_Click(object sender, EventArgs e)<br />
&nbsp; &nbsp; &nbsp; {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string today = String.Format(&quot;Last Day of this month is {0}&quot;, DateTime.Today.ToString(&quot;D<wbr />&quot;));<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show(today);<br />
&nbsp; &nbsp; &nbsp; }
</div>
</div>


Revise below to get last day of 
this month instead of TODAY.
--------------------------------------------
      private void button1_Click(object sender, EventArgs e)
      {
          string today = String.Format("Last Day of this month is {0}", DateTime.Today.ToString("D"));
          MessageBox.Show(today);
      }

C# -- &quot;Last Day of the Month&quot; Calculation ?

A programming language is a formal constructed language designed to communicate instructions to a machine, particularly a computer. Thousands of different programming languages have been created, mainly in the computer field, and many more still are being created every year. The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning). Some languages are defined by a specification document (for example, the C programming language is specified by an ISO Standard), while other languages (such as Perl) have a dominant implementation that is treated as a reference. Some languages have both, with the basic language defined by a standard and extensions taken from the dominant implementation being common.

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C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

C# -- &quot;Last Day of the Month&quot; Calculation ?

C# -- "Last Day of the Month" Calculation ?