c#中datagridview读取excel文件，内容重复了怎么解决？

Question

datagridview中出现2次同样的内容。

 private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();
            open.Title = "请选择要导入的Excel文件";
            open.Filter = "Excel文件(*.xls)|*.xls|csv文件(*.csv)|*.csv|xlsx文件(*.xlsx)|*.xlsx";

            if (open.ShowDialog() == DialogResult.OK)
            {
                string fileName = open.FileName;
                //根据路径打开一个Excel文件并将数据填充到DataSet中  
                string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = " + fileName + ";Extended Properties ='Excel 8.0;HDR=YES;IMEX=1'";
                OleDbConnection conn = new OleDbConnection(strConn);
                conn.Open();
                string strExcel = "select  * from   [sheet1$]";
                OleDbDataAdapter comm = new OleDbDataAdapter(strExcel, strConn);
                DataSet ds = new DataSet();
                try
                {
                    comm.Fill(ds, "table1");
                }
                catch (Exception ex)
                {
                    MessageBox.Show("错误信息：" + ex.ToString(), "错误");
                }
                comm.Fill(ds, "table1");
                dataGridView1.DataSource = ds.Tables[0];
            }
```![图片说明](https://img-ask.csdn.net/upload/202005/30/1590773127_856212.png)
![图片说明](https://img-ask.csdn.net/upload/202005/30/1590773328_155889.png)

Answer 1

comm.Fill(ds, "table1");
这个你写了2 次
下面的 comm.Fill(ds, "table1"); 去掉