如何从文本框中删除项目c＃

问题描述

我正在研究winapp。



这是一个机器人。



我想要添加和删​​除控制机器人的主人。

I'm working on a winapp.

It's a bot.

I want to add and delete masters who controls the bot.

//master add n remove
if (msg.Body != null && msg.Body.ToLower().StartsWith("addcon/"))
{                               
    textBox4.Text = textBox4.Text + msg.Body.ToLower().Replace("addcon/", "#");
}

if (msg.Body != null && msg.Body.ToLower().StartsWith("delcon/"))
{
                               
    string str = msg.Body.ToLower().Replace("delcon/", "");
    textBox4.Text.Replace(str + "#", "");
}

在上面的代码中，addcon / xyz命令被赋予bot来添加xyz到它的控制器，在textbox4中添加xyz＃



和delcon / xyz用于从textbox4中删除xyz＃





textbox4收集所有可通过远程命令控制机器人的机器人大师。





delcon无法正常工作。



任何帮助？

In the above code addcon/xyz command is given to bot to add xyz to its controller that adds xyz# in textbox4

and delcon/xyz coomand is given to delete xyz# from textbox4


textbox4 collects all ids of bot masters who can control the bot by remote commands.


The delcon is not working properly.

Any help?

推荐答案

string s1 = "Hello there!";
string s2 = s1;
s2.Replace("there", "World");

会导致更改发生在 s1 和 s2 因为它们都引用相同的字符串实例。

相反，它返回一个新的字符串，所以这个：

Would cause the change to happen to both s1 and s2 since they both reference the same string instance.
Instead, it returns a new string, so this:

string s1 = "Hello there!";
string s2 = s1;
s2 = s2.Replace("there", "World");
Console.WriteLine(s1);
Console.WriteLine(s2);

会打印

Would print

Hello there!
Hello World!

哪个更有用。

textbox4.Text = textBox4.Text.Replace(str + "#", "");

这篇关于如何从文本框中删除项目c＃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！