title: combobox databinding by JsonConvert in winforms C#
body: <p>I had to set the properties of the combobox in the designer.</p>
  
  <ul>
  <li>combobox property
  <ul>
  <li>DataSource    : dataSet_code</li>
  <li>DisplayMember : table1.code_desc</li>
  </ul></li>
  <li>combobox work
  <ul>
  <li>Use data bounding items  : check</li>
  <li>DataSource : dataSet_code</li>
  <li>Show Member : table1.code_desc</li>
  <li>Value Member : table1.code_value</li>
  </ul></li>
  </ul>
  
  <p>In the WinForm.cs Code</p>
  
  <pre><code>//1. This code don't shows the combobox item
  table1 = JsonConvert.DeserializeObject&lt;DataTable&gt;(jsonArrayColletion.toString());
  
  //2. This code shows the combobox item
  DataRow dr;
  dr = table1.NewRow();
  dr["code_desc"] = "one";
  dr["code_value"] = "1";
  table1.Rows.Add(dr);
  </code></pre>
  
  <p>Do you know this reason?</p>