WPF 后台添加DataGrid

public DataGrid CreateDataGrid()
{
//自定义DataGrid
DataGrid dataGrid = null;
dataGrid = new DataGrid();

dataGrid.Height = 340;
dataGrid.Margin = new Thickness(10, 30, 0, 0);
dataGrid.IsReadOnly = true;
dataGrid.AutoGenerateColumns = false;
dataGrid.CanUserResizeColumns = false;
System.Windows.Data.Binding binding = null;
binding = new System.Windows.Data.Binding("E_ID");
binding.Mode = System.Windows.Data.BindingMode.OneWay;
DataGridTextColumn dgtcE_Id = null;
dgtcE_Id = new DataGridTextColumn();
dgtcE_Id.Header = "列头1";
dgtcE_Id.Width = 70;
dgtcE_Id.Visibility = Visibility.Collapsed;
dgtcE_Id.Binding = binding;
dataGrid.Columns.Add(dgtcE_Id);
binding = new System.Windows.Data.Binding("E_Type");
binding.Mode = System.Windows.Data.BindingMode.OneWay;
DataGridTextColumn dgtcE_Type = null;
dgtcE_Type = new DataGridTextColumn();
dgtcE_Type.Header = "列头2";
dgtcE_Type.Width = 200;
dgtcE_Type.Binding = binding;
dataGrid.Columns.Add(dgtcE_Type);
binding = new System.Windows.Data.Binding("E_TypeName");
binding.Mode = System.Windows.Data.BindingMode.OneWay;
DataGridTextColumn dgtcE_TypeName = null;
dgtcE_TypeName = new DataGridTextColumn();
dgtcE_TypeName.Header = "列头3";
dgtcE_TypeName.Width = 200;
dgtcE_TypeName.Binding = binding;
dataGrid.Columns.Add(dgtcE_TypeName);
binding = new System.Windows.Data.Binding("E_State");
binding.Mode = System.Windows.Data.BindingMode.OneWay;
DataGridTextColumn dgtcReveaState = null;
dgtcReveaState = new DataGridTextColumn();
dgtcReveaState.Header = "列头4";
dgtcReveaState.Width = 120;
dgtcReveaState.Binding = binding;
dataGrid.Columns.Add(dgtcReveaState);

//DataGrid中Column的内容居中
Style styleRight = new Style(typeof(TextBlock));
Setter setRight = new Setter(TextBlock.HorizontalAlignmentProperty, HorizontalAlignment.Center);
styleRight.Setters.Add(setRight);
foreach (DataGridColumn c in dataGrid.Columns)
{
DataGridTextColumn tc = c as DataGridTextColumn;
if (tc != null)
{
tc.ElementStyle = styleRight;
}
}

//表头居中
Style style = new Style(typeof(DataGridColumnHeader));
setRight = new Setter(DataGridColumnHeader.HorizontalContentAlignmentProperty, HorizontalAlignment.Center);
style.Setters.Add(setRight);
dataGrid.ColumnHeaderStyle = style;

return dataGrid;
}

private void datagrid_LoadingRow(object sender, DataGridRowEventArgs e)
{
var drv = e.Row.Item as DataRowView;
switch (drv["ID"].ToString())
{
case "1": e.Row.Background = new SolidColorBrush(Colors.Green);
break;
case "2": e.Row.Background = new SolidColorBrush(Colors.Yellow);
break;
case "3": e.Row.Background = new SolidColorBrush(Colors.CadetBlue);
break;
}
}