使用C＃插入數據訪問，淨

Question

下面附代碼，代碼工作正常，但它不是插入的價值觀，到我已經創建了訪問數據庫表，無論是代碼顯示任何錯誤

namespace WindowsFormsApplication1 
    { 
     public partial class Form1 : Form 
     { 
      public Form1() 
      { 
       InitializeComponent(); 
      } 

      private void textBox2_TextChanged(object sender, EventArgs e) 
      { 
      } 

      private void submit_Click(object sender, EventArgs e)     
      {  
       OleDbConnection cnon = new OleDbConnection(); 
       cnon.ConnectionString =@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\visual_c\Database71.accdb"; 
       OleDbCommand command = new OleDbCommand(); 
       command.CommandText = "INSERT INTO electricity (Asset_name,Asset_number)VALUES('" + textBox1.Text + "','" + textBox2.Text + "')"; 
       cnon.Open(); 
       command.Connection = cnon; 
       command.ExecuteNonQuery(); 
       cnon.Close(); 
      } 
     } 
    } 

Answer 1

你在這裏缺少一個空格：

"(Asset_name,Asset_number)VALUES" 

嘗試改變你的命令字符串：

command.CommandText = "INSERT INTO electricity (Asset_name,Asset_number) VALUES('" + textBox1.Text + "','" + textBox2.Text + "')"; 

你笑ULD使用parameterized queries防止Sql Injection攻擊

command.CommandText = "INSERT INTO electricity (Asset_name,Asset_number) VALUES(@name,@number)"; 
command.Parameters.AddWithValue("@name", textBox1.Text); 
command.Parameters.AddWithValue("@number", textBox2.Text); 

Answer 2

使用parameteraized查詢 確保您的按鈕OnClick事件

command.CommandText = "INSERT INTO electricity (Asset_name,Asset_number) VALUES (@Assetname,@Assetnumber)",cnon; 

command.Parameters.AddWithValue("@Assetname", textBox1.Text); 
command.Parameters.AddWithValue("@Assetnumber", textBox2.Text);