使用組合框將數據從sql數據庫加載到datagridview中

Question

我有SQL列表，其中有三列ID,CUSTOMERNAME和ADDRESS。

我想在combobox1中顯示所有客戶ID的列表，當我選擇任何一個ID時，客戶名稱和地址應顯示在datagridview1屬於該ID的位置。

請諮詢我的代碼爲我學習編程的C＃

下面是我的app.config供你參考

<connectionStrings> 
    <add name="dbx" 
     connectionString="Data Source=USER\SQLEXPRESS;Initial Catalog=dbInventory;Integrated Security=True" 
     providerName="System.Data.SqlClient" /> 
</connectionStrings> 

Answer 1

這是簡單的，你可以給一個嘗試。

private void BindData(string selectCommand) 
{ 
    try 
    { 
     string selectCommand = "SELECT * FROM tblCustomers"; 
     String connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["dbx"].ConnectionString;; 

     // Create a new data adapter based on the specified query. 
     var dataAdapter = new SqlDataAdapter(selectCommand, connectionString); 

     // Create a command builder to generate SQL update, insert, and 
     // delete commands based on selectCommand. These are used to 
     // update the database. 
     SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter); 

     // Populate a new data table and bind it to the BindingSource. 
     DataTable table = new DataTable(); 
     dataAdapter.Fill(table); 
     dataGridView1.DataSource = table; 
    } 
    catch (SqlException) 
    { 
     MessageBox.Show("To run this example, replace the value of the " + 
      "connectionString variable with a connection string that is " + 
      "valid for your system."); 
    } 
}