asp:TextBox change placeholder via .NET code behind
<p>Is it possible to change textbox <code>placeholder</code> via ASP.NET code behind? If so, how?</p>

<p>Markup:</p>

<pre><code>&lt;asp:TextBox ID="TXTPassR" runat="server" CssClass="form-control" 
    placeholder="Enter password" TextMode="Password"&gt;&lt;/asp:Textbox&gt;
</code></pre>

<p>Code behind:</p>

<pre><code>if (Something)
{
   //Change placeholder
}
</code></pre>