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ComboBox don't resolve the DisplayField in the ComboBox.Text

  1. #1
    Feb 27, 2013, 9:30 AM

    ComboBox don't resolve the DisplayField in the ComboBox.Text

    Hi Support-Team,

    i have one Problem with the ComboBox. I initial the Properties DisplayField and ValueField. If i select a Item in the List, i will not see the DisplayField - Text in the ComboBox.Text. I see the ValueField - Property in the ComboBox.Text.

    <ext:ComboBox ID="ComboBox1" runat="server"  FieldLabel="Rufnummer:" AllowBlank="false" 
         DisplayField="Miet_Obj_Bez" ValueField="ID_Stammdaten" 
         MinChars="1" QueryMode="Local" 
         TriggerAction="All"  SelectOnFocus="true" 
          ondirectchange="ComboBox1_DirectChange"  ondirectselect="ComboBox1_DirectSelect" 
         ValueNotFoundText="Kein Ergebnis gefunden">
         <ListConfig  LoadingText="Suche...">
             <ItemTpl ID="ItemTpl1" runat="server">
                 <Html>
                     <div class="ComboBoxSearch-item">
                         <h3><span>{Miet_Obj_Bez}</span></h3>
		     </div>
                 </Html>
              </ItemTpl>
         </ListConfig>
         <Store>
             <ext:Store ID="Store1" runat="server" AutoLoad="false" IDProperty="ID_Stammdaten">
                 <Model>
                     <ext:Model ID="Model1" runat="server">
                         <Fields>
                             <ext:ModelField Name="ID_Stammdaten" Type="Int" />
                             <ext:ModelField Name="Miet_Obj_Bez"/>
                         </Fields>
                     </ext:Model>                            
                 </Model>
              </ext:Store>
         </Store>
</ext:ComboBox>
    Last edited by KevinWinter; Feb 27, 2013 at 9:33 AM.
  2. #2
    Feb 27, 2013, 9:38 AM
    Please post runable sample reproduces the issue
  3. #3
    Feb 27, 2013, 11:02 AM
    I Make a Mini-Projekt with the same Effekt

    <%@ Page Title="Startseite" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
    CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register assembly="Ext.Net" namespace="Ext.Net" tagprefix="ext" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
    <script>
    </script>
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:ComboBox 
        ID="ComboBox1" runat="server"  
        FieldLabel="Countries:" 
        DisplayField="Name" ValueField="ID" 
        MinChars="1" QueryMode="Local" 
        TriggerAction="All"  SelectOnFocus="true" 
        ondirectchange="ComboBox1_DirectChange"  ondirectselect="ComboBox1_DirectSelect" 
        ValueNotFoundText="no result">
        <ListConfig  LoadingText="searching...">
            <ItemTpl ID="ItemTpl1" runat="server">
                <Html>
                   <h3><span>{Name}</span></h3>
                </Html>
            </ItemTpl>
        </ListConfig>
        <Store>
            <ext:Store ID="Store1" runat="server" AutoLoad="true" IDProperty="ID">
                <Model>
                    <ext:Model ID="Model1" runat="server">
                        <Fields>
                            <ext:ModelField Name="Name"  Type="String" />
                            <ext:ModelField Name="ID" Type="Int" />
                        </Fields>
                    </ext:Model>                            
                </Model>
            </ext:Store>
        </Store>
    </ext:ComboBox>
</asp:Content>


    
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Ext.Net;
using DataAccessLayer;
using DataAccessLayer.Mapper;
using System.Data;

using ListItem = Ext.Net.ListItem;

public partial class _Default : System.Web.UI.Page
{
    private static List<Countries> ComboBoxList = new List<Countries>();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            Store1.DataSource = Mac1ComboBoxHelper.GetAll();
            Store1.DataBind();
            ComboBox1.DataBind();
        }
    }

    protected void InitComboBox(string filter)
    {
        Store1.DataSource = Mac1ComboBoxHelper.GetFilter(filter);
        Store1.DataBind();
    }

    protected void ComboBox1_DirectChange(object sender, DirectEventArgs e)
    {
        InitComboBox(ComboBox1.Text);
    }

    protected void ComboBox1_DirectSelect(object sender, DirectEventArgs e)
    {
        ListItem current = ComboBox1.SelectedItem;

        if (current != null)
        {
            

            //string str = current.Text;
            //ComboBox1.Text = str;
            //ComboBox1.ValueField = "ID_Stammdaten";

            
        }

    }
}

public class Countries
{
    public int ID { get; set; }
    public string Name { get; set; }

    public Countries()
    {

    }
    public Countries(int ID, string CountryName)
    {
        this.ID = ID;
        this.Name = CountryName;
    }
}

public class Mac1ComboBoxHelper
{
    private static List<Countries> ComboBoxList = new List<Countries>();

    public static List<Countries> GetAll()
    {
        List<Countries> list = new List<Countries>();

        Countries country1 = new Countries(1, "Russia");
        Countries country2 = new Countries(2, "Sweden");
        Countries country3 = new Countries(3, "Germany");
        Countries country4 = new Countries(4, "Turkey");
        Countries country5 = new Countries(1, "France");
        Countries country6 = new Countries(2, "China");
        Countries country7 = new Countries(3, "USA");
        Countries country8 = new Countries(4, "Switzerland");

        list.Add(country1);
        list.Add(country2);
        list.Add(country3);
        list.Add(country4);
        list.Add(country5);
        list.Add(country6);
        list.Add(country7);
        list.Add(country8);

        return list;
    }


    /// <summary>
    /// Is for the Filtering
    /// </summary>
    /// <param name="Filter"></param>
    /// <returns></returns>
    public static List<Countries> GetFilter(string Filter)
    {
        List<Countries> temptList = new List<Countries>();

        foreach (Countries record in ComboBoxList)
        {
            temptList.Add(record);
        }

        if (!string.IsNullOrEmpty(Filter) && Filter != "*")
        {
            temptList.RemoveAll(combo => !combo.Name.ToLower().StartsWith(Filter.ToLower()));
        }
        else
        {
            temptList.Clear();
            temptList = GetAll();
        }

        var resultList = from c in temptList
                         orderby c.Name
                         select c;

        return resultList.ToList<Countries>();
    }


}
  4. #4
    Feb 27, 2013, 11:11 AM
    The get All have a Bug in the Mini Projekt....but the Effect in the ComboBox is the same.

    public static List<Countries> GetAll()
    {
    ComboBoxList.Clear();

    Countries country1 = new Countries(1, "Russia");
    Countries country2 = new Countries(2, "Sweden");
    Countries country3 = new Countries(3, "Germany");
    Countries country4 = new Countries(4, "Turkey");
    Countries country5 = new Countries(1, "France");
    Countries country6 = new Countries(2, "China");
    Countries country7 = new Countries(3, "USA");
    Countries country8 = new Countries(4, "Switzerland");

    ComboBoxList.Add(country1);
    ComboBoxList.Add(country2);
    ComboBoxList.Add(country3);
    ComboBoxList.Add(country4);
    ComboBoxList.Add(country5);
    ComboBoxList.Add(country6);
    ComboBoxList.Add(country7);
    ComboBoxList.Add(country8);

    return ComboBoxList;
    }
  5. #5
    Feb 27, 2013, 11:18 AM
    I Select one Country and my Debugger show me in the DirectChange - Method this Value:
    ComboBox.Text = 2?! The Value is the ValueField, and not the DisplayField.



    protected void ComboBox1_DirectChange(object sender, DirectEventArgs e)
    {
    InitComboBox(ComboBox1.Text);
    }
  6. #6
    Feb 27, 2013, 12:08 PM
    You rebind store after in combobox change event, new data in the store has no record with selected value therefore text is not displayed
    What a sense rebind the store on each combo change?
  7. #7
    Feb 27, 2013, 12:22 PM
    Okey the reason behind the rebinding ist a filtered list.

    I can select a item from the Combox-List or i writte one Letter in the Textbox and i get the filted list.

    I need for this a rebind
  8. #8
    Feb 27, 2013, 12:28 PM
    Okey i try the same Sample without the Rebinding. But in the ComboBox1_DirectChange is the same problem.

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Ext.Net;

using System.Data;

using ListItem = Ext.Net.ListItem;

public partial class _Default : System.Web.UI.Page
{
    private static List<Countries> ComboBoxList = new List<Countries>();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            Store1.DataSource = Mac1ComboBoxHelper.GetAll();
            Store1.DataBind();
            ComboBox1.DataBind();
        }
    }

    protected void InitComboBox(string filter)
    {
        //Store1.DataSource = Mac1ComboBoxHelper.GetFilter(filter);
        //Store1.DataBind();
    }

    protected void ComboBox1_DirectChange(object sender, DirectEventArgs e)
    {//The Brakepoint sad the ComboBox1.Text is 1..2...3 or other id. 

        string result = ComboBox1.Text;
        //InitComboBox(ComboBox1.Text);
    }

    protected void ComboBox1_DirectSelect(object sender, DirectEventArgs e)
    {
        //ListItem current = ComboBox1.SelectedItem;

        //if (current != null)
        //{
            

        //    //string str = current.Text;
        //    //ComboBox1.Text = str;
        //    //ComboBox1.ValueField = "ID_Stammdaten";

            
        //}

    }
}

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