删除数组中的项目 [英] Remove item in array

问题描述

我有一个列表框，我已经制作了一个数组...

I have a list box which I have made an array from ...

public string[] getlistboxarray()
{
    string[] arr = new string[listBox2.Items.Count];
    for (int i = 0; i < listBox2.Items.Count; i++)
    {
        arr[i] = listBox2.Items[i].ToString();
    }
    return arr;
}

我有一个开始按钮，当我点击它时会删除数组中的第一项。我该怎么做？



我尝试过：



arr = arr.ToList（）。RemoveAt（0）。ToArray（）;

I have a start button, which when I click it removes the first item in the array. How would I do this?

What I have tried:

arr = arr.ToList().RemoveAt(0).ToArray();

推荐答案

请先阅读我对该问题的评论。



如果要从列表框中删除项目，请使用： ListBox.ObjectCollection.RemoveAt方法（Int32）（System.Windows.Forms） [ ^ ]

如果要从数组中删除项目，请使用： Array.removeAt功能 [ ^ ]

Please, read my comment to the question first.

If you want to delete item from listbox, use: ListBox.ObjectCollection.RemoveAt Method (Int32) (System.Windows.Forms)[^]
If you want to remove item from array, use: Array.removeAt Function[^]

如果你想操纵它e数组，一种简单的方法是将数据复制到数组变量中，然后调整它的大小。



例如

If you want to manipulate just the array, one simple way is to copy the data in the into the array variable and then resize it.

For example

Array.Copy(arr, 1, arr, 0, arr.Length - 1);
Array.Resize(ref arr, arr.Length - 1);

ADDED

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或者Paolo Zemek建议

ADDED
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Or as Paolo Zemek suggested

string[] arr2 = new string[listBox2.Items.Count - 1];
Array.Copy(arr, 1, arr2, 0, arr.Length - 1);

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