title: How to remove horizontal grey line between Toolstrips?
body: <p>I'm trying to configure 3 toolstrips but it seems they show a grey horizontal line between them.</p>
  
  <p>I've researched a bit and I only found a solution for the white border of the toolstrip items by overriding OnRenderToolStripBorder.</p>
  
  <p>I've did that already but I still keep with my issue here. I've attached an image so anyone can try to help me.`</p>
  
  <pre><code>public class ToolStripOverride : ToolStripProfessionalRenderer
  {
      public ToolStripOverride() { }
  
      protected override void OnRenderToolStripBorder(ToolStripRenderEventArgs e)
      {
      }
  }
  </code></pre>
  
  <p>+</p>
  
  <pre><code>        this.toolStrip1.Renderer = new ToolStripOverride();
  </code></pre>
  
  <p>Thank you!</p>
  
  <p><a href="https://i.stack.imgur.com/8c8oI.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8c8oI.jpg" alt="enter image description here"></a></p>