title: How to add 2 column in combobox?
body: <p>I think for displaying columns in combobox is responsible this string in Desingner of Form:</p>
  
  <pre><code>this.ComboBox1.DisplayMember = "name";
  </code></pre>
  
  <p>But, i cant add anything near "name", combobox shows in all strings : <code>System.Data.DataRowView</code></p>
  
  <p>Maybe its wrong, tell me please how do this?</p>
  
  <p>I'm just drag table as combobox from Data Source:</p>
  
  <p>When Form Loading:</p>
  
  <pre><code>private void frmCheck_Load(object sender, EventArgs e)
  {        
   this.ttzTableAdapter.Fill(this.dbDataSet.ttz, Convert.ToInt32(idFromWork.Text));
  }
  </code></pre>
  
  <p>So combobox show, just "name" in list, i want that he show "number" and "name" in list.</p>
  
  <pre><code>"Convert.ToInt32(idFromWork.Text)" 
  </code></pre>
  
  <p>parameter for show names where id_ttz(ID) = @idwork</p>