如何以编程方式在文本框中搜索文本 [英] How to search a textbox for text, programmatically

问题描述

我可以使用什么代码在文本框中搜索特定的数字.

在我的应用程序中，我有一个循环，每1秒钟在文本框的新行上生成文本.我正在使用随机生成器生成数字，然后执行算法.生成代码后，它将在新行上将其粘贴到文本框中.有时碰巧相同的数字会出现两次或三次！我不喜欢那个.在将其添加到新行之前，如何在整个文本框中搜索相同的数字(如果存在)?

谢谢.

如果有不清楚的地方，请不要犹豫.




我的生成值的代码:

What code can I use to search a text box for a specific number.

In my application, I have a loop to generate text on a new line of a text box every 1 second. I am using the Random generator to generate a number and then execute an algorithm. Once the code is generated, it pastes it on a new line into the textbox. Sometimes it so happens that the same number will come up twice, or thrice! I do not like that however. what can I do to search the entire textbox for the same number (if it exists) before adding it to a new line?

Thank you.

If something seems to be unclear, please don''t hesitate to ask.


edit:

my code that generates the values:

double year = DateTime.Now.Year;
            double month = DateTime.Now.Month;
            double day = DateTime.Now.Day;
            double hour = DateTime.Now.Hour;
            double minute = DateTime.Now.Minute;
            double second = DateTime.Now.Second;

            Random num = new Random();
            num.Next().ToString();
            if (!richTextBox1.Text.Contains(num))
            {
                richTextBox1.Text = richTextBox1.Text + (num.Next(0, 9) * month) + (num.Next(0, 9) * minute) + num.Next(0, 9) + "-" + (num.Next(0, 9) * day) + (num.Next(0, 9) + second) + num.Next(0, 9) + "-" + (num.Next(0, 9) + (year / 10)) + (num.Next(0, 9) + hour) + num.Next(0, 9) + "\r\n";
            }

推荐答案

if(!TextBox1.Text.Contains(TextToSearch))
    TextBox1.Text += "\r\n" + TextToSearch;

您可以使用上面的语句在文本框中搜索文本.

You can use above statement to search text in the TextBox.

尝试一下..
我觉得这对你来说就足够了.

Try this..
I think this is sufficient for you..

if (TextBox1.Text.IndexOf(dataToSearch)>-1)
{
     Console.WriteLine("data found.");
}
else
     Console.WriteLine("data not found")

一切顺利.

all the best..

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