NotImplementedException搜索列表框

Question

時，我只是想搜索字符串在我ListBox和我原本以爲它幾乎拍下來，直到我來到了這個問題：

類型的未處理的異常「System.NotImplementedException '發生在* * .exe

附加信息：該方法或操作未實現。

這裏是我的一段代碼：

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

     private void button1_Click(object sender, EventArgs e) 
     { 
      add(); 
     } 

     private void button2_Click(object sender, EventArgs e) 
     { 
      search(); 
     } 
     public void search() 
     { 
      if (textBox2.Text == string.Empty) 
      { 
       MessageBox.Show("Must enter value"); 
      } 
      else 
      { 
       string toFind = textBox2.Text; 
       if (toFind != string.Empty) 
       { 
        int search = listBox1.FindString(toFind); 
        if (search != -1) 
        { 
         listBox1.SetSelected(search, true); 
        } 
        else 
        { 
         MessageBox.Show("Could not find "+toFind); 
        } 
       } 
      } 
     } 
     public void add() 
     { 
      if (textBox1.Text == string.Empty) 
      { 
       MessageBox.Show("Must enter value"); 
      } 
      else 
      { 
       listBox1.Items.Add(textBox1.Text); 
      } 
      textBox1.Clear(); 
     } 
     private void textBox1_KeyDown(object sender, KeyEventArgs e) 
     { 
      if(e.KeyCode == Keys.Enter) 
      { 
       add(); 
      } 
     } 
     private void textBox2_KeyDown(object sender, KeyEventArgs e) 
     { 
      if (e.KeyCode == Keys.Enter) 
      { 
       search(); 
      } 
     } 

    } 
} 

Answer 1

搜索你的整個項目如下：

throw new NotImplementedException(); 

並做評論它;）