DataGridView不显示数据
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace WindowsApplication13
{
     public partial class Form1 : Form
     {
         SqlConnection conn = new SqlConnection("server=.;Uid=sa;Pwd=;database=test");
         public Form1()
         {
             InitializeComponent();
         }
         private void button1_Click(object sender, EventArgs e)
         {
             conn.Open();
             SqlDataAdapter da = new SqlDataAdapter("select f_NO,f1,f2,f3 from test", conn);
             DataSet ds = new DataSet();
             da.Fill(ds, "t1");
             bindingSource1.DataSource = ds.Tables["t1"];
             //dataGridView1.DataSource = ds.Tables["t1"].DefaultView;
             //bindingSource1.DataSource = ds.Tables["t1"].DefaultView;
             //dataGridView1.DataMember = "f1";
             //dataGridView1.DataSource = bindingSource1;
             conn.Close();
         }
     }
}
//在窗体上已经加了DataGridView 并为它绑定了bindingSource1
------解决方案--------------------你把注释//dataGridView1.DataSource = bindingSource1; 取消掉,数据是不是出了?
在设计器里面设置的绑定不行,具体原因我也没研究清楚,希望高手出来指点
------解决方案-------------------- bindingSource1.DataBind()
------解决方案--------------------把bindingSource1.DataSource = ds.Tables["t1"];换成 dataGridView1.DataSource = ds.Tables["t1"]; 其余的删除。其实代码写到这里是bindingSource1也可以不用的