C#如何实现读取excel表格中的数据并显示

1、新建一个form，添加一个button，和一个dataGridView。

3、读取Excel表内容，并且以dataset返回。 public DataSet getData() { //打开文件 OpenFileDialog file = new OpenFileDialog(); file.Filter = "Excel(*.xlsx)|*.xlsx|Excel(*.xls)|*.xls"; file.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); file.Multiselect = false; if (file.ShowDialog() == DialogResult.Cancel) return null; //判断文件后缀 var path = file.FileName; string fileSuffix = System.IO.Path.GetExtension(path); if (string.IsNullOrEmpty(fileSuffix)) return null; using (DataSet ds = new DataSet()) { //判断Excel文件是2003版本还是2007版本 string connString = ""; if (fileSuffix == ".xls") connString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + path + ";" + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1\""; else connString = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + path + ";" + ";Extended Properties=\"Excel 12.0;HDR=YES;IMEX=1\""; //读取文件 string sql_select = " SELECT * FROM [Sheet1$]"; using (OleDbConnection conn = new OleDbConnection(connString)) using (OleDbDataAdapter cmd = new OleDbDataAdapter(sql_select, conn)) { conn.Open(); cmd.Fill(ds); } if (ds == null || ds.Tables.Count <= 0) return null; return ds; } }

4、Button代码：private vo坡纠课柩id button1_Click(object sender, EventAr爿讥旌护gs e) { dataGridView1.DataSource = null; //每次打开清空内容 DataTable dt = getData().Tables[0]; dataGridView1.DataSource = dt; }

5、打开刚刚建立的Excel，也就是我们的目标Excel文档。