如何通过将行分配给表列来导入xls？
我只想做一个xls列映射function，以便用户可以直接导入xls数据到sql。 这是我的代码：
在这里，我必须分配用户input的行号。 从文本框中分配每个目标列号的更好方法是什么？ 有些身体能帮助我吗？
更新
我只是做了新的代码，但这次运气不足，我find了一些没有发现列exception。
protected void lbut_import_Click(object sender, EventArgs e) { if (FileUpload1.HasFile) { if (FileUpload1.FileContent.Length > 0) { string Foldername; string Extension = System.IO.Path.GetExtension(FileUpload1.PostedFile.FileName); string filename = DateTime.Now.ToString("ddMMyyyy_HHmmss"); if (Extension == ".XLS" || Extension == ".XLSX" || Extension == ".xls" || Extension == ".xlsx") { Foldername = Server.MapPath("~/Files/"); FileUpload1.PostedFile.SaveAs(Foldername + filename + Extension); string conString = string.Empty; switch (Extension) { case ".xls": //Excel 97-03 conString = ConfigurationManager.ConnectionStrings["Excel03ConString"].ConnectionString; break; case ".xlsx": //Excel 07 conString = ConfigurationManager.ConnectionStrings["Excel07+ConString"].ConnectionString; break; } conString = string.Format(conString, Foldername + filename + Extension); using (OleDbConnection excel_con = new OleDbConnection(conString)) { excel_con.Open(); string sheet1 = excel_con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null).Rows[0]["TABLE_NAME"].ToString(); DataTable dtExcelData = new DataTable(); //[OPTIONAL]: It is recommended as otherwise the data will be considered as String by default. dtExcelData.Columns.AddRange(new DataColumn[23] {new DataColumn("Name", typeof(string)), new DataColumn("type_id", typeof(int)), new DataColumn("Ownername",typeof(string)), new DataColumn("Ownermob",typeof(string)), new DataColumn("Room",typeof(string)), new DataColumn("Build",typeof(string)), new DataColumn("Road",typeof(string)), new DataColumn("Area",typeof(string)), new DataColumn("City",typeof(string)), new DataColumn("Phone",typeof(string)), new DataColumn("Mobile",typeof(string)), new DataColumn("Email",typeof(string)), new DataColumn("ContactPerson",typeof(string)), new DataColumn("ContactPersonmob",typeof(string)), new DataColumn("UserOFC",typeof(bool)), new DataColumn("UserVAT",typeof(bool)), new DataColumn("UserINV",typeof(bool)), new DataColumn("UserNone",typeof(bool)), new DataColumn("state_id",typeof(int)), new DataColumn("country_id",typeof(int)), new DataColumn("Remark",typeof(string)), new DataColumn("Register_Date",typeof(DateTime)), new DataColumn("User_id",typeof(string)), }); using (OleDbDataAdapter oda = new OleDbDataAdapter("SELECT * FROM [" + sheet1 + "]", excel_con)) { oda.Fill(dtExcelData); } excel_con.Close(); string consString = ConfigurationManager.ConnectionStrings["CRMConnectionString"].ToString(); using (SqlConnection con = new SqlConnection(consString)) { using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(con)) { //Set the database table name sqlBulkCopy.DestinationTableName = "tbl_Party_master"; //[OPTIONAL]: Map the Excel columns with that of the database table sqlBulkCopy.ColumnMappings.Add("Name", dtExcelData.Columns[int.Parse(txt_col.Text.Trim())].ToString()); sqlBulkCopy.ColumnMappings.Add("type_id",dtExcelData.Columns[int.Parse(txt_col1.Text.Trim())].ToString()); if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col2.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Ownername",dtExcelData.Columns[int.Parse(txt_col2.Text.Trim())].ToString()); } if (!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col3.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Ownermob", dtExcelData.Columns[int.Parse(txt_col3.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col4.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Room",dtExcelData.Columns[int.Parse(txt_col4.Text.Trim())].ToString()); } if (!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col5.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Build", dtExcelData.Columns[int.Parse(txt_col5.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col6.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Road",dtExcelData.Columns[int.Parse(txt_col6.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col7.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Area",dtExcelData.Columns[int.Parse(txt_col7.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col8.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("City",dtExcelData.Columns[int.Parse(txt_col8.Text.Trim())].ToString()); } if (!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col9.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Phone", dtExcelData.Columns[int.Parse(txt_col9.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col10.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Mobile",dtExcelData.Columns[int.Parse(txt_col10.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col11.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Email",dtExcelData.Columns[int.Parse(txt_col11.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col12.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("ContactPerson",dtExcelData.Columns[int.Parse(txt_col12.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col13.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("ContactPersonmob", dtExcelData.Columns[int.Parse(txt_col13.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col14.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("UserOFC", dtExcelData.Columns[int.Parse(txt_col14.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col15.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("UserVAT",dtExcelData.Columns[int.Parse(txt_col15.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col16.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("UserINV",dtExcelData.Columns[int.Parse(txt_col16.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col17.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("UserNone",dtExcelData.Columns[int.Parse(txt_col17.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col18.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("state_id",dtExcelData.Columns[int.Parse(txt_col18.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col19.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("country_id",dtExcelData.Columns[int.Parse(txt_col19.Text.Trim())].ToString()); } if(!string.IsNullOrEmpty(dtExcelData.Columns[int.Parse(txt_col20.Text.Trim())].ToString())) { sqlBulkCopy.ColumnMappings.Add("Remark",dtExcelData.Columns[int.Parse(txt_col20.Text.Trim())].ToString()); } sqlBulkCopy.ColumnMappings.Add("Register_Date",dtExcelData.Columns[int.Parse(txt_col21.Text.Trim())].ToString()); sqlBulkCopy.ColumnMappings.Add("User_id",dtExcelData.Columns[int.Parse(txt_col22.Text.Trim())].ToString()); con.Open(); sqlBulkCopy.WriteToServer(dtExcelData); con.Close(); } } StringBuilder sb = new StringBuilder(); sb.Append("<script type = 'text/javascript'>"); sb.Append("alert('"); sb.Append(dtExcelData.Rows.Count.ToString()); sb.Append(" Rows(s) are Inserted.');"); sb.Append("</script>"); ClientScript.RegisterStartupScript(this.GetType(), "script", sb.ToString()); } } } ibtnimexls_ModalPopupExtender.Show(); } } 从列映射的最后一行我发现错误如：
Server Error in '/CRM' Application. Cannot find column 23. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.IndexOutOfRangeException: Cannot find column 23. Source Error: Line 3403: } Line 3404: sqlBulkCopy.ColumnMappings.Add("Register_Date",dtExcelData.Columns[int.Parse(txt_col21.Text.Trim())].ToString()); Line 3405: sqlBulkCopy.ColumnMappings.Add("User_id",dtExcelData.Columns[int.Parse(txt_col22.Text.Trim())].ToString()); Line 3406: con.Open(); Line 3407: sqlBulkCopy.WriteToServer(dtExcelData); Source File: f:\CRM\Staff\Raise_Ticket.aspx.cs Line: 3405 Stack Trace: [IndexOutOfRangeException: Cannot find column 23.] System.Data.DataColumnCollection.get_Item(Int32 index) +95 Staff_Raise_Ticket.lbut_import_Click(Object sender, EventArgs e) in f:\CRM\Staff\Raise_Ticket.aspx.cs:3405 System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +118 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +113 System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +9 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +176 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1
更新
Column 'Name' does not allow DBNull.Value. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Column 'Name' does not allow DBNull.Value. Source Error: Line 3407: sqlBulkCopy.ColumnMappings.Add("Register_Date", dtExcelData.Columns[int.Parse(txt_col21.Text.Trim())].ToString()); Line 3408: sqlBulkCopy.ColumnMappings.Add("User_id", dtExcelData.Columns[int.Parse(txt_col22.Text.Trim())].ToString()); Line 3409: sqlBulkCopy.WriteToServer(dtExcelData); Line 3410: con.Close(); Line 3411: } Source File: f:\CRM\Staff\Raise_Ticket.aspx.cs Line: 3409 Stack Trace: [InvalidOperationException: Column 'Name' does not allow DBNull.Value.] System.Data.SqlClient.SqlBulkCopy.ConvertValue(Object value, _SqlMetaData metadata) +953277 System.Data.SqlClient.SqlBulkCopy.WriteToServerInternal() +1393 System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServer(Int32 columnCount) +762 System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table, DataRowState rowState) +186 System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table) +6 Staff_Raise_Ticket.lbut_import_Click(Object sender, EventArgs e) in f:\CRM\Staff\Raise_Ticket.aspx.cs:3409 System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +118 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +113 System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +9 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +176 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1
你可以试试这个：
protected void Upload(object sender, EventArgs e) { //Upload and save the file string excelPath = Server.MapPath("~/Files/") + Path.GetFileName(FileUpload1.PostedFile.FileName); FileUpload1.SaveAs(excelPath); string conString = string.Empty; string extension = Path.GetExtension(FileUpload1.PostedFile.FileName); switch (extension) { case ".xls": //Excel 97-03 conString = ConfigurationManager.ConnectionStrings["Excel03ConString"].ConnectionString; break; case ".xlsx": //Excel 07 or higher conString = ConfigurationManager.ConnectionStrings["Excel07+ConString"].ConnectionString; break; } conString = string.Format(conString, excelPath); using (OleDbConnection excel_con = new OleDbConnection(conString)) { excel_con.Open(); string sheet1 = excel_con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null).Rows[0]["TABLE_NAME"].ToString(); DataTable dtExcelData = new DataTable(); //[OPTIONAL]: It is recommended as otherwise the data will be considered as String by default. dtExcelData.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)), new DataColumn("Name", typeof(string)), new DataColumn("Salary",typeof(decimal)) }); using (OleDbDataAdapter oda = new OleDbDataAdapter("SELECT * FROM [" + sheet1 + "]", excel_con)) { oda.Fill(dtExcelData); } excel_con.Close(); string consString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString; using (SqlConnection con = new SqlConnection(consString)) { using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(con)) { //Set the database table name sqlBulkCopy.DestinationTableName = "dbo.tblPersons"; //[OPTIONAL]: Map the Excel columns with that of the database table sqlBulkCopy.ColumnMappings.Add("Id", "PersonId"); sqlBulkCopy.ColumnMappings.Add("Name", "Name"); sqlBulkCopy.ColumnMappings.Add("Salary", "Salary"); con.Open(); sqlBulkCopy.WriteToServer(dtExcelData); con.Close(); } } } }
也请按照此链接进行更多说明