string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\\家族业务表.xls;Extended Properties=Excel 8.0";
DataSet ds = new DataSet();
OleDbDataAdapter oada = new OleDbDataAdapter("select 工作日期 from [" + dataGridView1.CurrentRow.Cells["Column1"].Value.ToString() + "$]", strConn);
oada.Fill(ds);
dataGridView3.DataSource = ds.Tables[0];
现在是直接在末尾添加新列
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