在开始时加载labvel的问题

时间:2015-07-09 15:56:54

标签: c# logic

我正在制作一个程序,只显示我学校当天的代码。但我使用标签的方式存在问题。标签开始显示" label1"并且只有在我点击它时才更改当天的代码。任何人都可以找出问题所在。这是代码的片段:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private string GetCOTD()
        {
            //a function for getting the the COTD
            string sourceString = new System.Net.WebClient().DownloadString("http://guestwifi.discoveryschool.org.uk/cotd/?id=01234");
            sourceString = sourceString.Substring(959, 8);
            return sourceString;
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            label1.Text = GetCOTD();
        }
        private void label1_Click(object sender, EventArgs e)
        {
            label1.Text = GetCOTD();
        }

        private void label1_Click_1(object sender, EventArgs e)
        {
            label1.Text = GetCOTD();
        }
    }
}

2 个答案:

答案 0 :(得分:0)

在表单中,您可以创建一个文本控件,例如我的richtextbox,订阅加载事件,调用转换后的函数,并享受:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        richTextBox1.Text = (string)GetCOTD();
    }

    private object GetCOTD()
    {
        //a function for gettinthe the COTD
        string sourceString = new System.Net.WebClient().DownloadString("http://www.w3schools.com/");
        sourceString = sourceString.Substring(959, 8);
        return sourceString;
    }
}

希望这有帮助。

答案 1 :(得分:0)

转换器将为您提供时髦的代码,因为原始的VB函数没有指定返回类型(因此它只是返回Object)。

以下是VB中的样子:

Private Function GetCOTD() As String
    Dim sourceString As String = New System.Net.WebClient().DownloadString("http://guestwifi.discoveryschool.org.uk/cotd/?id=01234")
    Return sourceString.Substring(959, 8)
End Function

在C#中:

    private string GetCOTD()
    {
        string sourceString = new System.Net.WebClient().DownloadString("http://guestwifi.discoveryschool.org.uk/cotd/?id=01234");
        return sourceString.Substring(959, 8);
    }