Hi,
I am trying to add new items to a Radlist control. I have updated the list which is the data source for the radlist control. When i do the rebind. the new items not showing in the list control.But I can see the datasource(list) has the new item(s) added.I have attached the sample code here. Add button should add the new items to list control. I also wants to achieve if any item(s) double clicked in the list control should be removed from it.Please provide me a sample for that as well.I also wants to keep the dropdownlist list by default as not selected any items(blank) .
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Threading.Tasks;
using
System.Windows.Forms;
using
Telerik.WinControls.UI;
using
Common;
using
System.Configuration;
namespace
VisaManagementApp
{
public
partial
class
Form_Main : Form
{
DBHelper dbhelper =
new
DBHelper();
Countries Nationalities =
null
;
Countries AllowedCountries =
null
;
PermittedCountries permittedCountries =
null
;
string
conString;
public
Form_Main()
{
InitializeComponent();
this
.radDDL_SourceCountry.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDown;
this
.radDDL_SourceCountry.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
this
.radDDL_SourceCountry.DropDownListElement.AutoCompleteSuggest.SuggestMode = SuggestMode.Contains;
this
.radDDL_AllowedCountry.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDown;
this
.radDDL_AllowedCountry.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
this
.radDDL_AllowedCountry.DropDownListElement.AutoCompleteSuggest.SuggestMode = SuggestMode.Contains;
conString = ConfigurationManager.AppSettings[
"footPrint"
];
}
private
void
Form_Main_Load(
object
sender, EventArgs e)
{
LoadNationalities();
LoadAllowedCountries();
Panel_Main.Location =
new
Point(
this
.ClientSize.Width / 2 - Panel_Main.Size.Width / 2,
this
.ClientSize.Height / 2 - Panel_Main.Size.Height / 2);
Panel_Main.Anchor = AnchorStyles.None;
pb_product.Location =
new
Point(Panel_Header.Width / 2, Panel_Header.Height / 2 - pb_product.Height / 2);
}
private
void
LoadNationalities()
{
Nationalities =
null
;
string
error =
string
.Empty;
try
{
dbhelper.GetAllCountryDetails(conString,
out
Nationalities,
out
error);
// Nationalities.Insert(0, new Country() { COUNTRY_NAME = "", COUNTRY_CODE = "" });
this
.radDDL_SourceCountry.DataSource = Nationalities;
foreach
(Country cnty
in
Nationalities)
{
this
.radDDL_SourceCountry.ValueMember =
"COUNTRY_CODE"
;
this
.radDDL_SourceCountry.DataMember =
"COUNTRY_CODE"
;
this
.radDDL_SourceCountry.DisplayMember =
"COUNTRY_NAME"
;
}
this
.radDDL_SourceCountry.DropDownListElement.EditableElement.NullText =
"Search here"
;
}
catch
(Exception ex)
{
}
}
private
void
LoadAllowedCountries()
{
AllowedCountries =
null
;
string
error =
string
.Empty;
try
{
dbhelper.GetAllCountryDetails(conString,
out
AllowedCountries,
out
error);
//AllowedCountries.Insert(0, new Country() { COUNTRY_NAME = "", COUNTRY_CODE = "" });
radDDL_AllowedCountry.DataSource = AllowedCountries;
foreach
(Country country
in
AllowedCountries)
{
this
.radList_AllowedCountries.DisplayMember =
"COUNTRY_NAME"
;
this
.radList_AllowedCountries.ValueMember =
"COUNTRY_CODE"
;
this
.radList_AllowedCountries.DataMember =
"COUNTRY_NAME"
;
}
}
catch
(Exception ex)
{
}
}
private
void
radDDL_SourceCountry_SelectedIndexChanged(
object
sender, Telerik.WinControls.UI.Data.PositionChangedEventArgs e)
{
if
(radDDL_SourceCountry.SelectedIndex != 0)
{
permittedCountries =
null
;
Country country =
null
;
string
err =
string
.Empty;
dbhelper.GetCountryCode(conString, radDDL_SourceCountry.SelectedItem.Text,
out
country,
out
err);
if
(country !=
null
)
{
if
(radDDL_SourceCountry.SelectedIndex != 0)
{
dbhelper.GetPermittedCountries(conString, country.COUNTRY_CODE,
out
permittedCountries,
out
err);
if
(permittedCountries !=
null
)
{
this
.radList_AllowedCountries.DataSource = permittedCountries;
foreach
(PermittedCountry cnty
in
permittedCountries)
{
this
.radList_AllowedCountries.ValueMember =
"ALLOWED_COUNTRY_CODE"
;
this
.radList_AllowedCountries.DataMember =
"ALLOWED_COUNTRY_NAME"
;
this
.radList_AllowedCountries.DisplayMember =
"ALLOWED_COUNTRY_NAME"
;
}
}
}
}
}
}
private
void
radButton1_Click(
object
sender, EventArgs e)
{
try
{
if
(radDDL_AllowedCountry.SelectedIndex != 0)
{
permittedCountries.Insert(0,
new
PermittedCountry()
{
ALLOWED_COUNTRY_CODE = radDDL_AllowedCountry.SelectedItem.Value.ToString(),
ALLOWED_COUNTRY_NAME = radDDL_AllowedCountry.SelectedItem.Text,
NATIONALITY_CODE = radDDL_SourceCountry.SelectedItem.Value.ToString(),
STATUS =
true
});
radList_AllowedCountries.Rebind();
}
}
catch
(Exception ex)
{
}
}
}
}
Thanks in advance
Sarin Soman