关键代码
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile == false)//HasFile用来检查FileUpload是否有指定文件
{
Response.Write("<script>alert('请您选择Excel文件')</script> ");
return;//当无文件时,返回
}
string IsXls = System.IO.Path.GetExtension(FileUpload1.FileName).ToString().ToLower();//System.IO.Path.GetExtension获得文件的扩展名
if (IsXls != ".xls")
{
Response.Write("<script>alert('只可以选择Excel文件')</script>");
return;//当选择的不是Excel文件时,返回
}
string filename = FileUpload1.FileName; //获取Execle文件名 DateTime日期函数
string savePath = Server.MapPath(("../upfiles\\") + filename);//Server.MapPath 获得虚拟服务器相对路径
FileUpload1.SaveAs(savePath); //SaveAs 将上传的文件内容保存在服务器上
DataSet ds = ExcelSqlConnection(savePath, filename); //调用自定义方法
DataRow[] dr = ds.Tables[0].Select(); //定义一个DataRow数组
int rowsnum = ds.Tables[0].Rows.Count;
if (rowsnum == 0)
{
Response.Write("<script>alert('Excel表为空表,无数据!')</script>"); //当Excel表为空时,对用户进行提示
}
else
{
for (int i = 0; i < dr.Length; i++)
{
//前面除了你需要在建立一个“upfiles”的文件夹外，其他的都不用管了，你只需要通过下面的方式获取Excel的值，然后再将这些值用你的方式去插入到数据库里面
string title = dr[i]["姓名"].ToString();
string linkurl = dr[i]["工号"].ToString();
string categoryname = dr[i]["性别"].ToString();
string customername = dr[i]["出生日期"].ToString();
//Response.Write("<script>alert('导入内容:" + ex.Message + "')</script>");
}
Response.Write("<script>alert('Excle表导入成功!');</script>");
}
}
/// <summary>
/// 连接Excel 读取Excel数据 并返回DataSet数据集合
/// </summary>
/// <param name="filepath">Excel服务器路径</param>
/// <param name="tableName">Excel表名称</param>
/// <returns></returns>
public static DataSet ExcelSqlConnection(string filepath, string tableName)
{
string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";
OleDbConnection ExcelConn = new OleDbConnection(strCon);
try
{
string strCom = string.Format("SELECT * FROM [Sheet1$]");
ExcelConn.Open();
OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, ExcelConn);
DataSet ds = new DataSet();
myCommand.Fill(ds, "[" + tableName + "$]");
ExcelConn.Close();
return ds;
}
catch
{
ExcelConn.Close();
return null;
}
}
下载Excel样例
//c#标准下载文件代码
protected void LinkButton1_Click(object sender, EventArgs e)
{
string _filepath = "~/upfiles/样本.xls";
string _filename = "样本.xls";
if (System.IO.File.Exists(MapPath(_filepath)))
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("Content-Disposition", "attachment;filename=" + _filename);
Response.ContentType = "application/unknow";
Response.TransmitFile(_filepath);
Response.End();
}
}
测试Html
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="Button1" runat="server" Text="批量导入" onclick="Button1_Click" />
<p><asp:LinkButton ID="LinkButton1" runat="server" onclick="LinkButton1_Click">下载样本示例</asp:LinkButton></p>
