title: Adding bool column in DataTable with value
body: <p>i try to add column in datatable :</p>
  
  <pre><code>dt.Columns.Add(new DataColumn("BoolProperty", typeof(bool)));
  </code></pre>
  
  <p>and try to set value - false:</p>
  
  <pre><code>DataRow dr = dt.NewRow();
  dr["BoolProperty"] = false;
  </code></pre>
  
  <p>But it does not work! Here is code:</p>
  
  <pre><code>try
  {
      con.server = this.server;
      con.user = this.user;
      con.password = this.password;
      con.OpenConnection();
      con.SqlQuery(Properties.Resources.databaseCatalogResource);
      DataTable dt = con.QueryEx();
      con.da.Fill(dt);
      dt.Columns.Add(new DataColumn("BoolProperty", typeof(bool)));
      DataRow dr = dt.NewRow();
      dr["BoolProperty"] = false;
      dataGrid.ItemsSource = dt.DefaultView;
  
  }
  catch (Exception ex)
  {
      MessageBox.Show("Грешка във връзката.", "Грешка");
  }
  </code></pre>
  
  <p>This is what happens :
  <a href="https://i.stack.imgur.com/W3FXV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/W3FXV.png" alt=":)"></a></p>
  
  <p>but i need this column to be unchecked.</p>