c sharp中的組合框值

Question

如何讓一個組合框具有來自數據庫中特定列的所有值。我有一個名爲StudentName的列，我想要一個組合框，其中包含所有值爲StudentName的組合框。

sql = new SqlConnection(@"Data Source=PC-PC\PC;Initial Catalog=Anbar;Integrated Security=True"); 
adapter = new SqlDataAdapter("select * from School", sql); 

我應該如何繼續？請給一些代碼繼續這些代碼任何幫助將不勝感激。

Answer 1

sqlCon = new SqlConnection(@"Data Source=PC-PC\PC;Initial Catalog=Anbar;Integrated Security=True"); 
    SqlDataAdapter da = new SqlDataAdapter("Select StudentName from School", sqlCon); 
     DataTable dt = new DataTable(); 
     da.Fill(dt); 
     yourComboBox.DataSource = dt; 
     yourComboBox.DisplayMember = "StudentName"; 
     yourComboBox.ValueMember = "StudentName"; 

也閱讀了本Populate Date from Database in a ComboBox

Answer 2

使用下面的代碼

SqlDataAdapter da = new SqlDataAdapter("Select StudentName from School", sqlCon); 
DataTable dat = new DataTable(); 
da.Fill(dat); 
cmb.DataSource = dat; 
cmb.DisplayMember = "StudentName"; 
cmb.ValueMember = "StudentName";