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i am developing application using list box in the c sharp.
i have two list box.

Design as follows;

ListBox1 Button ListBox2

Sco Add All
Tasco Remove
PH2 Remove All

when i click the particular item from the ListBox1 that item to be displayed in the

similarly when i click Add All Button all items from ListBox1 to be displayed in the ListBox2.

when i click the Remove Button that partiuclar item from the listbox2 to be removed.

similarly when i click Remove All Button all items from ListBox2 to be Removed.

Important one is all item from the ListBox1 is displayed from the database.

how to do using c sharp.

Of course we won't code it for you.
You should start reading one of the many available tutorials (or CodeProject articles) on Windows Forms and Database programming with C#.
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Check this link :[^]
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You can use from bellow code:

1) Add selected Item from SourceListBox to TargetListBox

private void AddButton_Click(object sender, EventArgs e)
        this.SourceListBox .Items.Add(this.TargetListBox.SelectedItem);         

2) Remove selected Item from ListBox:

private void RemoveButton_Click(object sender, EventArgs e)
        if (this.ListBox.SelectedItem == null)


3) Delete All items of ListBox:

private void RemoveAllButton_Click(object sender, EventArgs e)

4) for getting data from Database you can attend to my answer to similar question in bellow link:

Connectivity of only column from database[^]

I hope it's helpful.

..If it's helpful for you please accept it and give Up vote..
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Please find this one C# listbox operations hope this will help you.

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