小编Mar*_*ary的帖子

我是学生,我不知道是什么partial class.以下代码属于部分类

我自动创建了分部类:

public partial class EGUI: Form
{     
    private OleDbConnection dbConn;   // Connectionn object
    private OleDbCommand dbCmd;       // Command object
    private OleDbDataReader dbReader; // Data Reader object
    private Emp Edetails;
    private string sConnection;
    private string sql;
}

我为foreach收到以下错误

Foreach语句不能对'object'类型的变量进行操作,因为'object'不包含'GetEnumerator'的公共定义

我正在进行任何语法错误

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication6
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Namepopu_SelectedIndexChanged(object sender, EventArgs e)
        {
            // this.textBox1.Text = Namepopu.Text;
           // this.textBox1.Text = " ";

            foreach (int i in Namepopu.SelectedItem)
                this.textBox1.Text += Namepopu.Text[i];
            {

            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}