如何通过随机函数从10个文本框中选择一个文本框? [英] how can i select one of a textbox from 10 textbox by random function?

问题描述

如何通过随机函数从10个文本框中选择一个文本框?

How can I select one of a textbox from 10 textbox by random function?

推荐答案

显而易见的解决方案:
使用 Random.Next [ ^ ]，之后按生成的数字和致电焦点 [选择 [ ^ ]方法.

[提示]
如果将TextBox引用保留在数组中或列出，则switch语句将替换为该数组中的单行索引. :)
[/TIP]

The obvious solution:
Generate a random number between 1 and 10 (or 0 and 9) using Random.Next[^], after that switch by generated number and call Focus[^] or Select[^] method for the chosen TextBox.

[TIP]
If you keep your TextBox references in array or list the switch statement will be replaced with a one-line indexing in that array. :)
[/TIP]

private Random rnd = new Random();
        private void SelectTextBox()
        {
            int i = rnd.Next(1, 10);
            foreach (Control c in this.Controls)
            {
                if (c is TextBox && c.Name == "textBox" + i.ToString())
                {
                    c.Select();
                    break;
                }
            }
        }

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