问题描述
如何将以下对象绑定到一个gridview？
How would I go about binding the following object, Car, to a gridview?
public class Car
{
long Id {get; set;}
Manufacturer Maker {get; set;}
}
public class Manufacturer
{
long Id {get; set;}
String Name {get; set;}
}
原始类型容易绑定，但我没有找到任何方式可以为Maker显示任何内容。我希望它显示Manufacturer.Name。甚至有可能吗
The primitive types get bound easy but I have found no way of displaying anything for Maker. I would like for it to display the Manufacturer.Name. Is it even possible?
这样做会是什么？我必须在Gar车中存储ManufacturerId，然后在制造商列表中设置一个lookupEditRepository？
What would be a way to do it? Would I have to store ManufacturerId in Car as well and then setup an lookupEditRepository with list of Manufacturers?
推荐答案
Allright guys ...这个问题被发贴waaay回来，但我刚刚发现一个相当不错的&简单的方法是通过在cell_formatting事件中使用反射来检索嵌套的属性。
Allright guys... This question was posted waaay back but I just found a fairly nice & simple way to do this by using reflection in the cell_formatting event to go retrieve the nested properties.
如下所示：
private void Grid_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
DataGridView grid = (DataGridView)sender;
DataGridViewRow row = grid.Rows[e.RowIndex];
DataGridViewColumn col = grid.Columns[e.ColumnIndex];
if (row.DataBoundItem != null && col.DataPropertyName.Contains("."))
{
string[] props = col.DataPropertyName.Split('.');
PropertyInfo propInfo = row.DataBoundItem.GetType().GetProperty(props[0]);
object val = propInfo.GetValue(row.DataBoundItem, null);
for (int i = 1; i < props.Length; i++)
{
propInfo = val.GetType().GetProperty(props[i]);
val = propInfo.GetValue(val, null);
}
e.Value = val;
}
}
就这样！您现在可以在列的DataPropertyName中使用熟悉的语法ParentProp.ChildProp.GrandChildProp。
And that's it! You can now use the familiar syntax "ParentProp.ChildProp.GrandChildProp" in the DataPropertyName for your column.
这篇关于可以将复杂类型的属性绑定到datagrid吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！