將選定項目導出到SQL數據庫

Question

在嘗試導出列表中的選定項目時，我已經到了可以知道某個項目在列表中的位置，但我無法獲取文本在該項目位置變量。

if (CustomerListbox.SelectedIndex > -1) 
{ 
    for (int i = 0; i < CustomerListbox.GetSelectedIndices().Count(); i++) 
    { 
     SqlConnection sqlConn = Connection.GetConnection(); 
     SqlCommand sqlCmd = new SqlCommand(); 
     sqlCmd.Connection = sqlConn; 
     { 
      ListItem li = new ListItem(); 
      li.Value = Convert.ToString(CustomerListbox.GetSelectedIndices().GetValue(i)); //Determines position within listbox 
      li.Text = Convert.ToString(CustomerListbox.Items.FindByValue(li.Value)); 
      //^^^some magic line of code to do li.text = Items.somethingselected@position5.Value 
      sqlCmd.CommandText = "ExportCustomers"; 
      sqlCmd.CommandType = CommandType.StoredProcedure; 
      sqlCmd.Parameters.AddWithValue("myquery", "insert into CustomerSelect(Customers) values('" + li.Text + "')"); 

     } 
     try 
     { 
      sqlConn.Open(); 
      sqlCmd.ExecuteNonQuery(); 
     } 
     catch (Exception e2) 
     { 
      throw e2; 
     } 
     sqlConn.Close(); 
    }   
} 

Answer 1

試試這個：

if (CustomerListbox.SelectedIndex > -1) 
{ 
    foreach(ListItem litem in CustomerListbox.Items) 
    { 
     if (litem.Selected == True) 
     { 
      using(SqlConnection sqlConn = Connection.GetConnection()) 
      { 
       using(SqlCommand sqlCmd = new SqlCommand()) 
       { 
        sqlCmd.Connection = sqlConn; 
        ListItem li = new ListItem(); 

        li.Value = litem.Value; //Determines position within listbox 
        li.Text = litem.Text; 

        sqlCmd.CommandText = "ExportCustomers"; 
        sqlCmd.CommandType = CommandType.StoredProcedure; 
        sqlCmd.Parameters.AddWithValue("myquery", "insert into CustomerSelect(Customers) values('" + li.Text + "')"); 

        sqlConn.Open(); 
        sqlCmd.ExecuteNonQuery(); 
       } 
      } 
     }  
    } 
}