wpf ComboBox绑定数据及变更事件

wangnaisheng2024-01-01 0:36

定义ComboBox，以及SelectionChanged事件

cs 复制代码

 <ComboBox x:Name="cmb_radius" Height="30" Width="65" FontSize="15" 
DisplayMemberPath="Value" SelectedValuePath="Key" HorizontalAlignment="Center"
VerticalAlignment="Center" Margin="3" SelectionChanged="cmb_radius_SelectionChanged"/>

实体类及数据绑定

cs 复制代码

public class ComboBoxEntity
{
    public string Key { get; set; }
    public string Value { get; set; }
}

cmb_radius.Items.Clear();
List<ComboBoxEntity> lcb = new List<ComboBoxEntity>();
for (int i = 0; i < M_Radius.Columns.Count; i++)
{
    ComboBoxEntity cbe = new ComboBoxEntity();
    cbe.Key = M_Radius.Columns[i].ColumnName;
    cbe.Value = M_Radius.Rows[0][i].ToString();
    
    // 添加ComboBoxEntity对象到列表中
    lcb.Add(cbe);
}

// 设置cmb_radius的ItemsSource为lcb
cmb_radius.ItemsSource = lcb;

SelectionChanged事件的处理

cs 复制代码

private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    ComboBox comboBox = (ComboBox)sender;
    // 获取选中的项
    object selectedValue = comboBox.SelectedItem;

    // 需要的业务逻辑处理
    if (selectedValue != null)
    {
         string cbKey = (selectedValue as ComboBoxEntity).Key;
         string cbValue = (selectedValue as ComboBoxEntity).Value;
    }
    //...
}