WPF自动产生列，前台代码：
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<DataGrid x:Name="Dg"
AutoGenerateColumns="True"
CanUserAddRows="False"
AutoGeneratingColumn="Dg_OnAutoGeneratingColumn"
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DataGrid绑定DataTable
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private
void
TestPage_Loaded(object
sender, RoutedEventArgs e)
{
var
dt = new
DataTable();
dt.Columns.Add("ID");
dt.Columns.Add("Name");
dt.Columns.Add("gender");
dt.Columns.Add("xAge");
DataRow newRow = dt.NewRow();
newRow["ID"] = "ID";
newRow["Name"] = "Name";
newRow["gender"] = "gender";
newRow["xAge"] = "xAge";
dt.Rows.Add(newRow);
Dg.ItemsSource = dt.DefaultView;
}
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因为数据源不固定（列名、列个数都不固定），所以必须自动生成列，并为每一列绑定下拉框；
下拉框的默认选中项为列的标题。实现字段映射功能
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private
void
Dg_OnAutoGeneratingColumn(object
sender, DataGridAutoGeneratingColumnEventArgs e)
{
var
sexType = new
List<string> { "Age", "gender", "ID", "Name","Country"
};
var
column = new
DataGridTemplateColumn { Header = e.PropertyName };
var
dataTemplate = new
DataTemplate();
var
fef = new
FrameworkElementFactory(typeof(ComboBox));
var
binding = new
Binding { Source = sexType };
fef.SetBinding(ItemsControl.ItemsSourceProperty, binding);
var
selectVal = new
Binding(e.PropertyName);//根据列名设置默认值
fef.SetBinding(Selector.SelectedValueProperty, selectVal);
dataTemplate.VisualTree = fef;
column.CellTemplate = dataTemplate;
e.Column = column;
e.Column.Width = 100;
}
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效果图：