wpf之ComboBox绑定

本文转载自查看原文 2012-11-26 14:12 21154 C# WinForm/WPF

方式一、通过泛型Dictionary绑定

View Code

           Dictionary< int, string> mydic = new Dictionary< int, string>() {
            { 0, " aaaa "},
            { 1, " bbbb "},
            { 2, " cccc "}
            };
            cobxUserType.ItemsSource = mydic;
            cobxUserType.SelectedValuePath = " Key ";
            cobxUserType.DisplayMemberPath = " Value ";

然后通过cobxUserType.SelectedValue获得选中的值即可

方法二、通过数据集绑定

View Code

  WebDictClassServices.WebDictClass webDict = new WebDictClass();
         private void Window_Loaded( object sender, RoutedEventArgs e)
        {
            BindCombox();
            BindCombox2(comboBox2, 0, " 选择系列 ");
            BindCombox2(comboBox3, 0, " 选择型号 ");
        }
         // 绑定下拉控件1
         private void BindCombox()
        {
            DataTable dt = webDict.GetMainBrand();
             if (dt != null && dt.Rows.Count == 0)
            {
                dt = new DataTable();
                DataColumn dc1 = new DataColumn( " Title ");
                DataColumn dc2 = new DataColumn( " ID ");
                dt.Columns.Add(dc1);
                dt.Columns.Add(dc2);
                DataRow row = dt.NewRow();
                row[ " title "] = " 按品牌选择 ";
                row[ " ID "] = " 0 ";
                dt.Rows.Add(row);
            }
             else
            {
                DataRow row = dt.NewRow();
                row[ " title "] = " 按品牌选择 ";
                row[ " ID "] = " 0 ";
                dt.Rows.Add(row);
            }
            DataView dv=dt.DefaultView;
            dv.Sort= " ID asc ";
            combMainBrand.ItemsSource =dv;
             this.combMainBrand.DisplayMemberPath = " Title ";
             this.combMainBrand.SelectedValuePath = " ID ";
            combMainBrand.SelectedValue = " 0 ";

        }
         // 绑定下拉控件
         private void BindCombox2(ComboBox comb, int id, string message)
        {
            DataTable dt = null;

             if (id == 0)
            {
                dt = new DataTable();
                DataColumn dc1 = new DataColumn( " Title ");
                DataColumn dc2 = new DataColumn( " ID ");
                dt.Columns.Add(dc1);
                dt.Columns.Add(dc2);
                DataRow row = dt.NewRow();
                row[ " Title "] = message;
                row[ " ID "] = " 0 ";
                dt.Rows.Add(row);
            }
             else
            {
                dt = webDict.GetCarSeriesByBrand(id);
                DataRow row = dt.NewRow();
                row[ " Title "] = message;
                row[ " ID "] = " 0 ";
                dt.Rows.Add(row);
            }
            DataView dv = dt.DefaultView;
            dv.Sort = " ID asc ";
            comb.ItemsSource = dv;
            comb.DisplayMemberPath = " Title ";
            comb.SelectedValuePath = " ID ";
             if (dt.Rows.Count!= 0)
            {
              comb.SelectedValue = dt.Rows[ 0][ " ID "];
            }
        }

         private void combMainBrand_SelectionChanged( object sender, SelectionChangedEventArgs e)
        {
             int id = Convert.ToInt32(combMainBrand.SelectedValue);
            BindCombox2(comboBox2, id, " 选择系列 ");
            BindCombox2(comboBox3, Convert.ToInt32(comboBox2.SelectedValue), " 选择型号 ");
        }

         private void comboBox2_SelectionChanged( object sender, SelectionChangedEventArgs e)
        {
             int id = Convert.ToInt32(comboBox2.SelectedValue);
            BindCombox2(comboBox3, id, " 选择型号 ");
        }

三、IList绑定(类似winForm)

View Code

   public class Info
    {
         public int Id { get; set; }
         public string Name { get; set; }

    }

        // 绑定用户类型
         private void bindUserType()
        {
            IList<Info> list = new List<Info>() {
              new Info(){ Id= 0, Name= " 供应商 "}, new Info(){
              Id= 1, Name= " bbbbbb "}

            };
            cobxUserType.ItemsSource = list;
            cobxUserType.SelectedValuePath = " Id ";
            cobxUserType.DisplayMemberPath = " Name ";

        }

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