I m Having a problem while uploading and Importing data from Excel to SQL Server table.
please help....
i am using following code....
if(file_upload_ex.HasFile)
{
//Upload and save the file
string excelPath = Server.MapPath("~/Files") + Path.GetFileName(file_upload_ex.PostedFile.FileName);
file_upload_ex.SaveAs(excelPath);
string conString = string.Empty;
string extension = Path.GetExtension(file_upload_ex.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]["questions"].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[13] { new DataColumn("set_id", typeof(int)),
new DataColumn("center_id", typeof(int)),
new DataColumn("ques_no", typeof(int)),
new DataColumn("exam_id", typeof(int)),
new DataColumn("category_id", typeof(string)),
new DataColumn("subcategory_id", typeof(string)),
new DataColumn("ques", typeof(string)),
new DataColumn("option_A", typeof(string)),
new DataColumn("option_B", typeof(string)),
new DataColumn("option_C", typeof(string)),
new DataColumn("option_D", typeof(string)),
new DataColumn("correct_ans", typeof(string)),
new DataColumn("marks",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 = "online_exam.questions";
//[OPTIONAL]: Map the Excel columns with that of the database table
sqlBulkCopy.ColumnMappings.Add("set_id", "set_id");
sqlBulkCopy.ColumnMappings.Add("center_id", "center_id");
sqlBulkCopy.ColumnMappings.Add("ques_no", "quesion_no");
sqlBulkCopy.ColumnMappings.Add("exam_id", "exam_id");
sqlBulkCopy.ColumnMappings.Add("category_id", "category_id");
sqlBulkCopy.ColumnMappings.Add("subcategory_id", "subcategory_id");
sqlBulkCopy.ColumnMappings.Add("ques", "questions");
sqlBulkCopy.ColumnMappings.Add("option_A", "option_A");
sqlBulkCopy.ColumnMappings.Add("option_B", "option_B");
sqlBulkCopy.ColumnMappings.Add("option_C", "option_C");
sqlBulkCopy.ColumnMappings.Add("option_D", "option_D");
sqlBulkCopy.ColumnMappings.Add("correct_ans", "correct_answer");
sqlBulkCopy.ColumnMappings.Add("marks", "marks");
con.Open();
sqlBulkCopy.WriteToServer(dtExcelData);
con.Close();