title: reportviewer not shown on form designer (c# winform)
body: <p>I user reportviewer for my winform app!!!</p>
  
  <p>now when i select reportviewer control from toolbox and add that to page controler, any thing not shown on form designer , but bottom of page the name of reportviewer will be seen!!!</p>
  
  <p>i really confused for this problem !!!</p>
  
  <p>this problem appeared when i make backup from my project !!! and before that i did't have any problem with report viewer!
  (i set location and size of reportviewer manually but  ...)</p>
  
  <pre><code> this.reportViewer1.Location = new System.Drawing.Point(0, 0);
   this.reportViewer1.Name = "ReportViewer";
   this.reportViewer1.Size = new System.Drawing.Size(396, 246);
   this.reportViewer1.TabIndex = 0;
   this.reportViewer1.Visible = true;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/Oqb99.png" alt="enter image description here"></p>