如何将值从一个列表框移动到另一个列表框 [英] How to move values from one listbox to another listbox

问题描述

我知道如何将值从一个列表框转移或传递给另一个列表框

但是我不知道如何在没有选择的情况下转移它



我尝试过：



listBox2.Items.Add（listBox1.SelectedItem）;

listBox1.Items.Remove（listBox1.SelectedItem）;

这个我累了，但我选择了项目，但我想不选择，转移它们

i know how to transfer or pass value from one Listbox to Another Listbox
but i Don't know how transfer it without selection

What I have tried:

listBox2.Items.Add(listBox1.SelectedItem);
listBox1.Items.Remove(listBox1.SelectedItem);
this i tired but i select the items but i want to without selecting, transfer them

推荐答案

SelectedItem属性只返回当前选中的项目 - 但您已经在使用所需的属性：ListBox.Items

您所要做的就是决定哪个项目（ s）你想要的，并通过Items属性直接访问它们：

The SelectedItem property just returns the currently selected item - but you are already using the property you need: ListBox.Items
All you have to do is decide which item(s) you want, and access them directly via the Items property:

listBox2.Items.Add(listBox1.Items[indexOfItemIWant]);
listBox1.Items.Remove(listBox1.Items[indexOfItemIWant]);

它基本相同，但你只需要定义项目的索引你想修改。



考虑以下示例

It's basically the same, but you just define the index of the item you want to modify.

Consider the following example

ListBox lb1 = new ListBox();
ListBox lb2 = new ListBox();

lb1.Items.Add("first");
lb1.Items.Add("second");
lb1.Items.Add("third");

// move the second item
lb2.Items.Add(lb1.Items[1]);
lb1.Items.RemoveAt(1);

[已添加]



移动多件物品的示例

[ADDED]

Example of moving several items

// move two items items 2 and 0
// remember that when using indexes loop from biggest to smallest
foreach (int index in new int[] { 2, 0 }) {
   lb2.Items.Add(lb1.Items[index]);
   lb1.Items.RemoveAt(index);
}

[已添加]

由于你使用多选列表作为源，你可以遍历选定的项目。例如

[ADDED]
Since you're using multiselect list as source, you can loop through the selected items. For example

ListBox lb1 = new ListBox();
ListBox lb2 = new ListBox();

lb1.Items.Add("first");
lb1.Items.Add("second");
lb1.Items.Add("third");

// select items 0 and 2
lb1.SelectionMode = SelectionMode.MultiSimple;
lb1.SelectedItems.Add(lb1.Items[0]);
lb1.SelectedItems.Add(lb1.Items[2]);

// move the selected items
for (int counter = lb1.SelectedItems.Count - 1; counter >= 0; counter-- ) {
   lb2.Items.Add(lb1.SelectedItems[counter]);
   lb1.Items.Remove(lb1.SelectedItems[counter]);
}

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