如何将datagridview中的列绑定到c#中的数组元素

Question

I am using C# in Visual Studio 2015. I have a winform with a datagridview. I have a custom class

   public class deNode
   {
     public byte machine {get;set;}
     public DateTime eDate {get;set;}
     public int[] errorCode {get;set;}
   }

I have :

List<deNode> equipment;

I want to use equipment as DataSource for the DataGridView and specify errorCode[0],errorCode[1]..errorCode[17] as DataPropertyName s for individual columns in the DataGridView.

I have tried equipmentGrid.Columns[2].DataPropertyName = "errorCode[2]" but that doesn't work. How can I achieve my goal?

appreciate any ideas.

Thanks.

Answer 1

Separate your model from the way you display your model. Make something similar to a VideModel , an adapter between the model and the DataGridView.

Apart from that this solves your problem, it will also make it possible to change your HMI without having to change your model. In future you can (within limits) change your model, without having to change the datagridview.

class ViewModelDeNode
{
    public DeNode DeNode {get; set;}

    public int ErrorCode00 => this.DeNode.ErrorCode[00];
    public int ErrorCode01 => this.DeNode.ErrorCode[01];
    ...
}

The columns in your DataGridView:

DataGridViewColumn columnErrorCode01 = new DataGridViewColumn()
{
    Name = ...
    HeaderText = "Error code 01",
    DataPropertyName = nameof(ViewModelDenode.ErrorCode01),
    ...
};


IEnumerable<DeNode> deNodes = ...
IEnumerable<ViewModelDenode> displayableDeNodes = deNodes
    .Select(deNode => new ViewModelDeNode
    {
        DeNode = deNode,
    });

DataGridView dgv = new DataGridView(...);
dgv.DataSource = displayableDeNodes.ToList();

Or if you want to edit the datagridview (add / remove / update rows):

dgv.DataSource = new BindingList<ViewModelDeNode>(displayableDeNodes);