Complete mechanism of cheklistbox

Zeeshan Afzal

6y707

hey Mahesh...

your article about CheckListBox in WPF is really helpfull. I insert the data in database bu using CheckListBox, but i stuck in a problem which is, how i check only those items which we store in database. In winform we can handle this problem with this line of code "chkListColors.SetItemChecked(index, true);" but here this is not usefull please guide me how can i do this in wpf...Thanx

7 Replies

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Rajanikant Hawaldar6y ago
Accepted answer
I will give you just hint you have to do it, When you check or uncheck first CheckedListBox you have raise
Checked and UnChecked events to save data to database then only you can bind that data to another
CheckedListBox so after save data you have to call method to bind another CheckedListBox.
Create another CheckListBox as below
<ListBox ItemsSource="{Binding AvailablePresentationObjects}" >
    <ListBox.ItemTemplate>
        <HierarchicalDataTemplate>
            <CheckBox Content="{Binding Name}" IsChecked="{Binding IsChecked}"/>
        HierarchicalDataTemplate>
    ListBox.ItemTemplate>
ListBox>
Create model class as below example
public class CheckedListItem
{
    public string Name { get; set; }
    public bool IsChecked { get; set; }
}
Bind the CheckedListItem class object
public List AvailablePresentationObjects;
for example
public MainWindow()
       {
           InitializeComponent();
           DataContext = this;
AvailablePresentationObjects = new List();
           // get the data from database and bind here loop through google how to use ado.net code
// start loop here
           CheckedListItem obj = new CheckedListItem();
           obj.Name = "rajani";
           obj.IsChecked = false; //

           AvailablePresentationObjects.Add(obj);
// loop end
       }
Refer below article to for ado.net code, you have to bind this to CheckedListItem class obj the add to
AvailablePresentationObjects obj it will display to Second CheckedListBox.
https://www.c-sharpcorner.com/UploadFile/009464/bind-checkedlistbox-in-window-form-using-C-Sharp/
Zeeshan Afzal6y ago
Thankyou so much Rajanikant Hawaldar
God bless you...
Rajanikant Hawaldar6y ago
there is not particuler control in wpf ok, that is why we have to use template with ListBox to customize as we want the control. red color highlighted CheckBox_Checked event should be attached to Checkbox as below so when you check or uncheck control CheckBox_Checked event will hit, you have to modify the Observable Collection obj(which you used to bind the CheckedListBox control do not try as checkbox.checkedItems) Checked Status of particuler item which checked in the control that you will get in ChecBox_Checked event through sender object. Hope you understand now. and one more thing i want to tell you controls which are in normal winforms are all not there in wpf, stil if you want you can use winform controls in wpf using windowtoolkit but we should avoid it.
<ListBox x:Name="ListBox2" ItemsSource="{Binding AvailablePresentationObjects}" >
<ListBox.ItemTemplate>
  <HierarchicalDataTemplate>
<CheckBox Content="{Binding Name}" IsChecked="{Binding IsChecked}" Checked="CheckBox_Checked"/>
  HierarchicalDataTemplate>
ListBox.ItemTemplate>
ListBox>
Zeeshan Afzal6y ago
Thanx Rajanikant Hawaldar for such a good hint...please only one thing tell me how i set the condition for only checked items in checkbox e.g. checkbox.checkedItems===>like this, but this is not working here...please guide me in a right way...Thanx
Amit Gupta6y ago
If you are comfortable then you can try one of the simplest way to use a boolean type in your datatable, it will casually allow user to have checkbox and easy to get checked only items
Zeeshan Afzal6y ago
Yes but also fetch the saved items in CheckListBox in checked form...i also attach a zip file which contains an image for more clarification..Thanx
Rajanikant Hawaldar6y ago
Do you want to save only CheckListBox checked items using WPF C#?