如何连续加数字并获得C#的总数 [英] How do I add numbers continuesly and get a total in C#

问题描述

您好，我想在c#中创建一个日常程序(在Visual Studio 2017中)，它应该像这样:
有一个文本框-标签-"BTN"，其底部是Photoshop之类的名称，因此标签首先显示0(小时)，然后当您向文本框添加数字时显示"2:30"分钟，然后点击"BTN"，标签应显示2:30(小时).另一件事是我希望它与垂直进度条同步(我知道如何制作)，但我不知道如何与进度条同步，并且我希望它将所有内容都保存在SQL数据库中我加一个数字的时间.我知道这很多(也许对我而言，因为我是初学者)，但是如果您知道该怎么做，请帮助我.谢谢.

我尝试过的事情:

我在Google和YouTube上做了很多研究，这就是我所得到的(我首先做了一个计算器，但这不是我想要的):

hello, I want to create a daily program in c# ( in visual studio 2017 ), it should be like this :
there is a textbox - label - ''BTN'' and at the bottom of those is a name of something like Photoshop and so the label at first shows 0 ( hours ) and then when u add a number to textbox like "2:30" minutes and hit the ''BTN'' the label should show 2:30 (hours). and another thing is that I want it to sync with a vertical progress bar ( I know how to make this one ) but I don''t know how to sync it with progress bar and I want it to save everything in a SQL database every time that I add a number. I know this is a lot ( maybe for me cause I''m a beginner ) but please if u know how to make it, help me. thank you.

What I have tried:

I did a lot of research in google and YouTube and this Is what I got ( I made a calculator first but it wasn''t what I want):

public Form1()
        {
            InitializeComponent();
        }

        int a = 0;

        private void button1_Click(object sender, EventArgs e)
        {
            a++;
            label1.Text = a.ToString();
        }

我想要这样的东西，但与其计算点击次数，不如添加我在文本框中输入的数字并将其与进度栏和标签同步.

I want something like this but instead of counting my clicks it should add the numbers that I type in textbox and sync it with the progress bar and the label.

推荐答案

首先要做的是将文本框中的数字转换为可以使用的数字格式.为此，请使用TryParse:

The first thing to do is start by converting the number in the textbox into a numeric format that you can work with. For that, use TryParse:

double val;
if (!double.TryParse(myTextBox.Text, out val))
   {
   // It's not a valid floting point number - report a problem to the user instead of continuing.
   ...
   return;
   }

现在，您可以使用val中的值求和.
您可以通过设置Bars的Value属性来将其与进度条同步"-通过设置Maximum和Minimum属性来覆盖整个范围，因此您的值将介于其中.

保存到数据库更加复杂-如果您还不能处理ProgressBar，那么我将把它保留一会儿并考虑使用更简单的东西，例如设置文件:

Now you can use the value in val to add up your total.
You "sync" it with the progress bar by setting the bars Value property - by setting the Maximum and Minimum properties to cover the whole range, so your values fit between those.

Saving to a DB is more complex - if you can''t cope with a ProgressBar yet, then I''d leave that for a while and consider using something simpler, like a settings file: Using Settings in C#[^]

在此处查看示例: [进度栏]和此处: [ SQL客户端]

See examples here: [progressbar] and here: [SQL Client]

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