我正在将学生加载到我的数据网格中,然后想要将它们分配给一个类。我真的不在乎究竟是怎么回事,但我无法使用任何方法。
我尝试使用上下文菜单,但没有设法获取事件(之前从未使用过) 然后我在每一行中添加了一个按钮,但后来我无法弄清楚如何获得按钮所在的行。 我的最后一次尝试是获取selectedItem并在组合框中使用ToString(),但这也不起作用。
检查出来:
private void dataGrid4_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
DataGrid dg = new DataGrid();
dg = (sender as DataGrid);
MessageBox.Show(dataGrid4.Items.GetItemAt(1).ToString());
MessageBox.Show(dataGrid4.CurrentItem.ToString() + "\n" + dataGrid4.CurrentCell.Column.ToString() + "\n" + dataGrid4.CurrentCell.Item.ToString() + "\n" + dataGrid4.SelectedItem.ToString() + "\n" + dataGrid4.SelectedValue.ToString() + "\n" + dataGrid4.SelectedIndex.ToString());
MessageBox.Show(dg.CurrentItem.ToString() + "\n" + dg.CurrentCell.Column.ToString() + "\n" + dg.CurrentCell.Item.ToString() + "\n" + dg.SelectedItem.ToString() + "\n" + dg.SelectedValue.ToString() + "\n" + dg.SelectedIndex.ToString());
}
请帮助我,我即将发疯..):
答案 0 :(得分:4)
您可以从网格中获取所选项目,如下所示:
<DataGrid Name="dgStudents"
AutoGenerateColumns="False"
SelectionChanged="dgStudents_SelectionChanged">
<DataGrid.Columns>
<DataGridTextColumn Header="ID" Binding="{Binding ID}" />
<DataGridTextColumn Header="Name" Binding="{Binding Name}" />
<DataGridTextColumn Header="Surname" Binding="{Binding Surname}" />
</DataGrid.Columns>
</DataGrid>
事件处理程序:
private void dgStudents_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems != null && e.AddedItems.Count != 0)
{
foreach (Student item in e.AddedItems)
{
Console.WriteLine(item.ID);
}
}
}
简单的学生班:
class Student
{
public int ID { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
}
如果您想使用上下文菜单,请尝试以下方法:
<DataGrid Name="dgStudents"
AutoGenerateColumns="False">
<DataGrid.ContextMenu>
<ContextMenu>
<MenuItem Header="ClassA" Click="ClassA_Click" />
<MenuItem Header="ClassB" Click="ClassB_Click" />
</ContextMenu>
</DataGrid.ContextMenu>
<DataGrid.Columns>
<DataGridTextColumn Header="ID" Binding="{Binding ID}" />
<DataGridTextColumn Header="Name" Binding="{Binding Name}" />
<DataGridTextColumn Header="Surname" Binding="{Binding Surname}" />
<DataGridTextColumn Header="Class" Binding="{Binding ClassName}" />
</DataGrid.Columns>
</DataGrid>
在代码隐藏中向MenuItem
添加两个事件处理程序:
private void ClassA_Click(object sender, RoutedEventArgs e)
{
if (dgStudents.SelectedItems != null && dgStudents.SelectedItems.Count != 0)
{
foreach (Student item in dgStudents.SelectedItems)
{
item.ClassName = "ClassA";
}
dgStudents.Items.Refresh();
}
}
private void ClassB_Click(object sender, RoutedEventArgs e)
{
if (dgStudents.SelectedItems != null && dgStudents.SelectedItems.Count != 0)
{
foreach (Student item in dgStudents.SelectedItems)
{
item.ClassName = "ClassB";
}
dgStudents.Items.Refresh();
}
}
将学生班级更改为:
class Student
{
public int ID { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
public string ClassName { get; set; }
}