http://blog.csdn.net/loveheronly/article/details/6715552
项目中经常用到导入导出的例子，前面做了导出的例子，现在把导入Excel的数据的例子也把它晾出来，不足之处，请大家多多指教。
1.导入前的视图Excel和页面视图
3.前台代码
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="请选择上传文件（.xls）"></asp:Label>
<asp:FileUpload ID="fUExcel" runat="server" />
<asp:Button ID="btnExcel" runat="server" Text="确定" OnClick="btnExcel_Click" />
<asp:GridView ID="gvExcelData" runat="server" BackColor="LightGoldenrodYellow"
BorderColor="Tan" BorderWidth="1px" CellPadding="2" ForeColor="Black"
GridLines="None">
<FooterStyle BackColor="Tan" />
<PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue"
HorizontalAlign="Center" />
<SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" />
<HeaderStyle BackColor="Tan" Font-Bold="True" />
<AlternatingRowStyle BackColor="PaleGoldenrod" />
</asp:GridView>
</div>
</form>
</body>
4.后台代码
protected void btnExcel_Click(object sender, EventArgs e) { HttpPostedFile p = fUExcel.PostedFile; string filename = DateTime.Now.ToString("yyyyMMddHHmm") + Path.GetFileName(p.FileName); if (!Directory.Exists(Server.MapPath(@"~/upload" + "//"))) Directory.CreateDirectory(Server.MapPath(@"~/upload" + "//")); string filePath = Server.MapPath(@"~/upload" + "//" + filename); fUExcel.SaveAs(filePath); if (filename != "") { if (filename.Contains("xls")) { OleDbConnection oleCon = new OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source='" + filePath + "';Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'"); oleCon.Open(); string Sql = "SELECT * FROM [Sheet1$] "; OleDbDataAdapter mycommand = new OleDbDataAdapter(Sql, oleCon); DataSet ds = new DataSet(); mycommand.Fill(ds, "[Sheet1$]"); oleCon.Close(); int count = ds.Tables["[Sheet1$]"].Rows.Count; for (int i = 0; i < count; i++) { string ItemId = ds.Tables["[Sheet1$]"].Rows[i]["项目Id"].ToString().Trim(); string Fixnumber = ds.Tables["[Sheet1$]"].Rows[i]["用户号码"].ToString().Trim(); string LinkMan = ds.Tables["[Sheet1$]"].Rows[i]["联系人姓名"].ToString().Trim(); //这里可以写插入数据库的代码 } gvExcelData.DataSource = ds; gvExcelData.DataBind(); Response.Write("<script>window.alert('导入数据成功！');</script>"); } else { Response.Write("<script>window.alert('请检查您选择的文件是否为Excel文件！');</script>"); return; } } else { Response.Write("<script>window.alert('请先选择导入文件后，再执行导入！');</script>"); return; } }
5.注意得引入命名空间
using System.IO; using System.Data.SqlClient; using System.Data.OleDb; using System.Data.Sql;
6.最后一点就是你要导入的Excel表的表头是
项目Id、用户号码、联系人姓名