在ViewModel绑定下拉框_如何在viewmodel中设置combox

在ViewModel里面设置下拉框首先来枚举他的值

  public class Company
        {
            public string CompanyName { get; set; }
            public string CompanyID { get; set; }
        }
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CompanyName 是显示的值，CompanyID 是系统识别的值
然后设置一个集合来接收

public List<Company> Companynames { get; set; }
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声明一个方法，在方法里面把枚举的值添加到这个用来接收的属性里面

  public void SelectCombox()
        {
            this.Companynames = new List<Company>();
            this.Companynames.Add(new Company() { CompanyName = "请选择", CompanyID = "0" });
            this.Companynames.Add(new Company() { CompanyName = "是", CompanyID = " true" });
            this.Companynames.Add(new Company() { CompanyName = "否", CompanyID = "false" });
          
        }

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XAML代码

<ComboBox  Grid.Row="15" Grid.Column="1" Height="35" FontSize="14" x:Name="zengping" 
                       ItemsSource="{Binding Companynames,Mode=TwoWay}" DisplayMemberPath="CompanyName" SelectedValuePath="CompanyID" SelectedValue="{Binding CuisineZ}"/>

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数据源呢就绑定Companynames，DisplayMemberPath 就绑定你枚举的 CompanyName ，SelectedValuePath就绑定CompanyID，SelectedValue就给他绑定你设置的属性，数据回填的时候就用是通过 SelectedValue绑定的值来回填，要跟枚举的CompanyID的值一样才可以回填数据