Question

I have a question regarding a data binding(of multiple properties) for custom DataGridViewColumn. Here is a schema of what controls that I have, and I need to make it bindable with DataGridView datasource. Any ideas or a link to an article discussing the matter?

控制

Graph Control(custom): Displayed in the custrom DataGridView column. Has properties like "Start Date", "EndDate", Windows Chart control, which is itself, bindable, etc.
Custom cell(DataGridViewCustomCell inherits from DataGridViewCell) that holds the Graph control and processes some events(OnEnter event, for example, passes the focus to the custom Graph column for drag-n-drop type of events, etc.)
Custom column(DataGridViewCustomColumn inherits from DataGridViewColumn) that defined the cell template type: CellTemplate = new DataGridViewCustomCell(); and also a primary choice for data binding

数据结构:

Main table to be displayed in other DataGridView Columns
Graph table - related to the Main table via parent-child relationship. Holds graph data
Chart table related to the graph table via parent-child relationship. Holds data for the win-form chart, which is a part of my Graph control.

直到目前为止，我甚至不能将Graph表中的数据绑定到我的Graph控件或Graph-holding列/单元格。

Answer 1

感谢您的回答。我的数据来源不是SQL数据源，事实上，我在谈论Windows表单的数据网格视图（我不确定这是否清楚）。

由于我在任何一个问问题的论坛上都没有得到回复，我认为我会概述一下我想出来的解决方案，供那些可能遇到类似问题的人和可能的评论。 :-)

(steps 1-2 are also explained in the famous MS example) 1. Create your own classes that inherit from DataGridViewColumn and DataGridViewCell, setup the column template; 2. Create your "CustomEdit" control

In the data item, whatever that is, a DataRow, or a List item, add a read-only property, that return the object itself. This property is bound to the custom column.

自定义单元格：

public partial class MyCell : DataGridViewCell 
 {
    protected override void Paint(...)
        {...} // draws control
              // receives data item as a value 
              // in my case I have to custom-draw entire control in this fnc.
    public override void InitializeEditingControl(...)
        {...} // initialize control editing
    // override some other properties
    public override Type EditType {
        get{ 
           return typeof(MyEditControl);
        }
    }
    public override Type ValueType{
        get{
           return typeof(MyItem);
        }
    }
 }

自定义列：

public partial class MyColumn : DataGridViewColumn
{
    public MyColumn(){ ...
    CellTemplate = new MyCell();
    }
}

编辑控件：

public partial class MyEditControl : UserControl, IDataGridViewEditingControl
{... // implements IDataGridViewEditingControl
     // value is our data item
}

数据项，数据来源变成List<MyItem>。

public class MyItem:Object{
    ...
    [XmlIgnore] // I need it because I do serialization
    public MyItem Self {
        get {
            return this;
        }
    }
 }

Answer 2

请看我的问题这里

这很容易做，你只需要不使用IDE，而是全部用代码实现。虽然是很多工作，但如果你知道该怎么做，它并不难。我从一无所知到能够在一天内完成它，所以我相信你也能做到。

编辑：您还可以在用于填充DataGridView的SQL中使用Join。

友情链接