Question

您好。我想将excel表数据导入SQL服务器表，因为我编写了如下代码。工作表正在上传到文件夹中，但数据没有导入到表格中，有人能告诉我请问错误在哪里....

public partial class upload2 : System.Web.UI.Page
    {
        private string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                PopulateDatabaseTables();
            }
        }

        private void PopulateDatabaseTables()
        {
            string tableName = string.Empty;
            string sql = "SELECT *, name AS table_name " +
                " FROM sys.tables WHERE Type = 'U' ORDER BY table_name";
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                using (DataTable table = new DataTable())
                {
                    conn.Open();
                    using (SqlDataAdapter dAd = new SqlDataAdapter(sql, conn))
                    {
                        dAd.Fill(table);
                    }
                    ListBox1.DataSource = table;
                    ListBox1.DataBind();
                }
            }
        }

        protected void ImportNow_Click(object sender, EventArgs e)
        {
            if (ListBox1.SelectedValue == "")
            {
                lblMessage.ForeColor = Color.Red;
                lblMessage.Text = "Please select table in which you want to import data from excel sheet";
            }
            else if ((fileuploadExcel.FileName != ""))
            {
                string extension = Path.GetExtension(fileuploadExcel.PostedFile.FileName);

                string excelConnectionString;
                SqlConnection conn = new SqlConnection(connStr);
                string tableName = ListBox1.SelectedValue;
               // string path = fileuploadExcel.PostedFile.FileName;
                string path = Server.MapPath("~/fileuploadExcel/" + fileuploadExcel.FileName);
                fileuploadExcel.SaveAs(path);
                Response.Write("path=" + path);
                return;
                //Create connection string to Excel work book
                if (extension == ".xlsx")
                {
                    excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=+ path +
                                                          ;Extended Properties=Excel 8.0;Persist Security Info=False";
                }
                else
                {
                    excelConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;sData Source= + path +
                                                         ;Extended Properties=Excel 12.0;Persist Security Info=False";
                }

                //Create Connection to Excel work book
                SqlConnection excelConnection = new SqlConnection(excelConnectionString);
                //Create OleDbCommand to fetch data from Excel             
                conn.Open();
                SqlCommand comm = new SqlCommand("truncate table " + tableName, conn);
                SqlCommand identityChange = conn.CreateCommand();
                identityChange.CommandText = "SET IDENTITY_INSERT " + tableName + " ON";
                SqlCommand cmd = new SqlCommand("Select * from [Sheet1$]", excelConnection);
                excelConnection.Open();
                SqlDataReader dReader;
                dReader = cmd.ExecuteReader();
                identityChange.ExecuteNonQuery();
                SqlBulkCopy sqlBulk = new SqlBulkCopy(connStr);
                //Give your Destination table name
                sqlBulk.DestinationTableName = tableName;
                sqlBulk.WriteToServer(dReader);
                excelConnection.Close();
                conn.Close();
                lblMessage.ForeColor = Color.Green;
                lblMessage.Text = "Import into table <b>" + tableName + "</b> successful!<br />";
            }
            else
            {
                lblMessage.ForeColor = Color.Red;
                lblMessage.Text = "Please first upload (Select) excel file.";
            }
        }

        protected void viewdata_Click(object sender, EventArgs e)
        {
            BindData();
        }

        private void BindData()
        {
            try
            {
                if (ListBox1.SelectedValue == "")
                {
                    lblMessage.ForeColor = Color.Red;
                    lblMessage.Text = "Please select table for which you want to view data in Gridview";
                }
                else
                {
                    string tableName = ListBox1.SelectedValue;
                    SqlConnection conn = new SqlConnection(connStr);
                    SqlDataAdapter sda = new SqlDataAdapter("select * from " + tableName, conn);
                    DataSet ds = new DataSet();
                    sda.Fill(ds);
                    gvdetails.DataSource = ds;
                    gvdetails.DataBind();
                }
            }
            catch (DataException de)
            {
                lblMessage.Text = de.Message;
                lblMessage.ForeColor = System.Drawing.Color.Red;
            }
        }

        protected void gvdetails_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            gvdetails.PageIndex = e.NewPageIndex;
            BindData();
        }
    }
}

Answer 1

excelConnectionString = @“Provider = Microsoft.Jet.OLEDB.4.0;数据源= + path + ;扩展属性= Excel 8.0;持久安全信息=假“;

此处您已直接使用path，修改excelConnectionString如下

excelConnectionString = String.Format(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0}
                                                      ;Extended Properties=Excel 8.0;Persist Security Info=False",path);

Answer 2

为什么不使用MS SQL Server导入和导出向导.. 这是最简单的方法。

提供此网址，您可以获得提示。 Click Here to View

希望它对你有所帮助......

Answer 3

如果您没有在服务器上安装Office，您可能会发现它无法在您的连接字符串中找到提供商...

Provider=Microsoft.Jet.OLEDB.4.0;

Provider=Microsoft.ACE.OLEDB.12.0

不幸的是，微软从未将其设计为无需服务器主机支付额外费用即可在其服务器上运行Office。

如何将excel表中的数据导入sql server表？

3 个答案: