我是写在LOAD里

我是写在LOAD里

没有啊

真的，还有只要我焦点一移到这个控件上，他就变空值，一移开就正常了

我的是这样

using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace YSCK
{
    public partial class cpin : Form
    {
        public cpin()
        {
            InitializeComponent();
        }

        private void cpin_Load(object sender, EventArgs e)
        {
            // TODO: 这行代码将数据加载到表“dataSet1.UserLoad”中。您可以根据需要移动或移除它。
            SqlConnection conn = new SqlConnection("user id=sa;password=3927;Database =YSCK;data source=127.0.0.1;Connect Timeout=30");
            conn.Open();
            //SqlCommand cm = new SqlCommand("select * from userload",conn);
            SqlDataAdapter da = new SqlDataAdapter("select * from cpindtl", conn);
            DataSet dt = new DataSet();
            da.Fill(dt, "cpindtl");
            this.dataGridView1.DataSource = dt.Tables["cpindtl"].DefaultView;
            conn.Close();
            //
            //加载操作员数据
            //
            SqlDataAdapter da1 = new SqlDataAdapter("select name from userload", conn);
            DataSet dt1 = new DataSet();
            da1.Fill(dt1, "userload");
            //
            //给comboBox1(开单人)绑定数据
            //
             = "name";
             = "name";
             = dt1.Tables["userload"];
             .Text ="--请选择";
 
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
            return;
        }

    }
}