title: JQGrid how concat two columns?
body: <p>I need conccat two columns</p>
  
  <p>FirstName + LastName.</p>
  
  <p>I need create one columnt DisplayName.</p>
  
  <p>How do this? 
  I can not do this when receiving data
  \ grid</p>
  
  <pre><code> ResultGrid = new JQGrid
                  {
                      Columns = new List&lt;JQGridColumn&gt;()
                          {
                              new JQGridColumn
                                  {
                                      DataField = "ID",
                                      PrimaryKey = true,
                                      Editable = false,
                                      Visible = false,
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "FirstName",
                                      Visible = false,
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "LastName",
                                      Visible = false,
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "EmployeeDisplay",
                                      Editable = false,
                                      Searchable = true,
                                      DataType = typeof(Int32),
                                      SearchToolBarOperation = SearchOperation.IsEqualTo,
                                      SearchType = SearchType.DropDown,
                                      Formatter = new CustomFormatter(){FormatFunction = ""}
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "Date",
                                      SearchType = SearchType.DatePicker,
                                      DataType = typeof (DateTime),
                                      SearchControlID = "DatePicker",
                                      SearchToolBarOperation = SearchOperation.IsEqualTo,
                                      Editable = false,
  
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "Yield",
                                      Editable = false,
  
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "Credit",
                                      Editable = false
                                  },
                              new JQGridColumn
                                  {
                                      DataField = "Balance",
                                      Editable = false
                                  },
  
                          },
                      Width = Unit.Pixel(1000),
                      Height = Unit.Pixel(500)
                  };
  </code></pre>
  
  <p>data:</p>
  
  <pre><code>    var joinTransationAndEmployee = employees.Join(transaction, e =&gt; e.TimeAccountID, tl =&gt; tl.AccountID,
                               (employee, log) =&gt;
                               new
                                   {
                                       log.ID,
                                       log.Date,
                                       log.Credit,
                                       log.Yield,
                                       log.Balance,
                                       FirstName= employee.FirstName,
                                       LastName = employee.LastName
                                   });
  
          return model.ResultGrid.DataBind(joinTransationAndEmployee);
  </code></pre>