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oledbConn.ServerVersion' threw an exception of type 'System.InvalidOperationException

In MVC Application While Connect with Excel gives an error
I just create a connection with excel and when try to open it's give error
oledbConn.ServerVersion' threw an exception of type
'System.InvalidOperationException
public DataTable Read(string filePath)
{
string extension = System.IO.Path.GetExtension(filePath).ToLower();
string connString = string.Empty;
if (extension.Trim() == ".xls")
{
connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;HDR=YES'";
}
else if (extension.Trim() == ".xlsx")
{
//connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
//connString = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=Excel 12.0;Persist Security Info=False";
connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 8.0;HDR=YES'";
}
connString = string.Format(connString, filePath);
var dataTable = ConvertXSLXtoDataTable(filePath, connString);
return dataTable;
}
DataTable ConvertXSLXtoDataTable(string strFilePath, string connString)
{
OleDbConnection oledbConn = new OleDbConnection(connString);
DataTable dt = new DataTable();
try
{
oledbConn.Open();
using (OleDbCommand cmd = new OleDbCommand("SELECT * FROM [Sheet1$]", oledbConn))
{
OleDbDataAdapter oleda = new OleDbDataAdapter();
oleda.SelectCommand = cmd;
DataSet ds = new DataSet();
oleda.Fill(ds);
dt = ds.Tables[0];
}
}
catch
{
}
finally
{
oledbConn.Close();
}
return dt;
}

C# Import Excel Data to SQL Table

I am trying to use a method I pulled off of CodePlex, which exports data from Excel into a SQL table. I have made some minor code adjustments, but I still can't seem to get the data to import. Does anyone see anything glaringly wrong with my syntax? Thanks.
static void Main(string[] args)
{
importdatafromexcel("C:/Users/usname/Desktop/TestDirectories/FileSystemWatcher/Test_123.xlsx");
}
public static void importdatafromexcel(string excelfilepath)
{
//declare variables - edit these based on your particular situation
string ssqltable = "Name";
// make sure your sheet name is correct, here sheet name is sheet1, so you can change your sheet name if have different
string myexceldataquery = "select Name,EmployeeID from [sheet1$]";
try
{
//create our connection strings
string sexcelconnectionstring = "Provider=Microsoft.Jet.OLEDB.4.0;data source=" + excelfilepath + ";Extended Properties=" + "\"excel 8.0;hdr=yes;\"";
//MyConnection = new System.Data.OleDb.OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelfilepath + ";Extended Properties=Excel 8.0;HDR=YES'");
string ssqlconnectionstring = "server=DESKTOP-6CIMC97;Initial Catalog=TestDB;integrated security=true;connection reset = false";
//<add name="ProductContext" connectionString="Server=DESKTOP-6CIMC97; Initial Catalog=ProductApps; Integrated Security=True" providerName="System.Data.SqlClient" />
//execute a query to erase any previous data from our destination table
string sclearsql = "delete from " + ssqltable;
SqlConnection sqlconn = new SqlConnection(ssqlconnectionstring);
SqlCommand sqlcmd = new SqlCommand(sclearsql, sqlconn);
sqlcmd.Connection.Open();
sqlcmd.ExecuteNonQuery();
sqlconn.Close();
//series of commands to bulk copy data from the excel file into our sql table
OleDbConnection oledbconn = new OleDbConnection(sexcelconnectionstring);
OleDbCommand oledbcmd = new OleDbCommand(myexceldataquery, oledbconn);
oledbconn.Open();
OleDbDataReader dr = oledbcmd.ExecuteReader();
SqlBulkCopy bulkcopy = new SqlBulkCopy(ssqlconnectionstring);
bulkcopy.DestinationTableName = ssqltable;
bulkcopy.WriteToServer(dr);
//while (dr.Read())
//{
// bulkcopy.WriteToServer(dr);
//}
oledbconn.Close();
}
catch (Exception ex)
{
//handle exception
}
}

The problem is here:
while (dr.Read())
{
bulkcopy.WriteToServer(dr);
}
The while (dr.Read()) block is useful if you are iterating over the results one-by-one.
But it's not you who is iterating over the results. You want the bulk copy operation to do the iterating.
Simply replace it with
bulkcopy.WriteToServer(dr);

This should work for you.
private void SaveFileToDatabase(string filePath)
{
String strConnection = "Data Source=.\\SQLEXPRESS;AttachDbFilename='C:\\Users\\Hemant\\documents\\visual studio 2010\\Projects\\CRMdata\\CRMdata\\App_Data\\Database1.mdf';Integrated Security=True;User Instance=True";
String excelConnString = String.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0\"", filePath);
//Create Connection to Excel work book
using (OleDbConnection excelConnection = new OleDbConnection(excelConnString))
{
//Create OleDbCommand to fetch data from Excel
using (OleDbCommand cmd = new OleDbCommand("Select [ID],[Name],[Designation] from [Sheet1$]", excelConnection))
{
excelConnection.Open();
using (OleDbDataReader dReader = cmd.ExecuteReader())
{
using(SqlBulkCopy sqlBulk = new SqlBulkCopy(strConnection))
{
//Give your Destination table name
sqlBulk.DestinationTableName = "Excel_table";
sqlBulk.WriteToServer(dReader);
}
}
}
}
}
private string GetLocalFilePath(string saveDirectory, FileUpload fileUploadControl)
{
string filePath = Path.Combine(saveDirectory, fileUploadControl.FileName);
fileUploadControl.SaveAs(filePath);
return filePath;
}
For more info, see the links below.
https://www.codeproject.com/tips/636719/import-ms-excel-data-to-sql-server-table-using-csh
http://www.c-sharpcorner.com/UploadFile/0c1bb2/inserting-excel-file-records-into-sql-server-database-using/
As you can tell, there are MANY ways to do what you want to do.

Excel Loading via c#

Try to Load an excel file using this code below gives me this error
The Microsoft Access database engine could not find the object 'Sheet Name'. Make sure the object exists and that you spell its name and the path name correctly. If 'Sheet Name' is not a local object, check your network connection or contact the server administrator.
i am sure the Sheet Name is correct.
Any suggestions?
if (strFile.Trim().EndsWith(".xlsx"))
{
strConnectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";", strFile);
}
else if (strFile.Trim().EndsWith(".xls"))
{
strConnectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";", strFile);
}
OleDbConnection SQLConn = new OleDbConnection(strConnectionString);
SQLConn.Open();
OleDbDataAdapter SQLAdapter = new OleDbDataAdapter();
string sql = "SELECT * FROM [" + sheetName + "]";
OleDbCommand selectCMD = new OleDbCommand(sql, SQLConn);
SQLAdapter.SelectCommand = selectCMD;
///error in this line
SQLAdapter.Fill(dtXLS);
SQLConn.Close();

As mentioned in a comment above have you tried this
string sql = "SELECT * FROM [" + sheetName + "$]";

DataSet ds = new DataSet();
if (strFile.Trim().EndsWith(".xlsx"))
{
strConnectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";", strFile);
}
else if (strFile.Trim().EndsWith(".xls"))
{
strConnectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";", strFile);
}
OleDbConnection objXConn = new OleDbConnection(strConnectionString);
objXConn.Open();
OleDbCommand objCommand = new OleDbCommand("SELECT * FROM [" + SheetName + "$]", objXConn);
OleDbDataAdapter adp = new OleDbDataAdapter(objCommand);
adp.Fill(ds);
objXConn.Close();

how to import multiple excel sheets into 2 sql server tables?

Am having one excel file with 2 different worksheets as fundmodelrate and project.Now I want to import these 2 different sheet values into 2 different sql tables(k2_fundmodelrate,k2_project).I can able to do import only if am working with 1 sheet and and 1 table,but I want two sheets values to be imported on two tables at the same time on button click event.
My code below:
private String strConnection = "Data Source=kuws4;Initial Catalog=jes;User ID=sa;Password=******";
protected void btnSend_Click(object sender, EventArgs e)
{
string path = fileuploadExcel.PostedFile.FileName;
string excelConnectionString = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\fmr.xls;Extended Properties=Excel 12.0;Persist Security Info=False";
OleDbConnection excelConnection = new OleDbConnection(excelConnectionString);
OleDbCommand cmd = new OleDbCommand("Select * from [FundModelRate$]", excelConnection);
//OleDbCommand cmd1 = new OleDbCommand("Select * from [FundModelRate$], [Project$]", excelConnection);
excelConnection.Open();
OleDbDataReader dReader;
dReader = cmd.ExecuteReader();
SqlBulkCopy sqlBulk = new SqlBulkCopy(strConnection);
sqlBulk.DestinationTableName = "K2_FundModelRate";
// sqlBulk.DestinationTableName = "K2_Project";
sqlBulk.WriteToServer(dReader);
excelConnection.Close();
}

I think the only way is to loop through your two sheets.
Have a look at This post. This will help you get the sheet names.
When you have the sheet names, you can then just loop through them and then load them into SQL.
Maybe this can help you:
OleDbConnection objConn = null;
System.Data.DataTable dt = null;
string excelConnection = "";
if(strFile.Trim().EndsWith(".xlsx"))
{
excelConnection = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";", strFile);
}
else if(strFile.Trim().EndsWith(".xls"))
{
excelConnection = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";", strFile);
}
objConn = new OleDbConnection(excelConnection);
objConn.Open();
dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
String[] excelSheets = new String[dt.Rows.Count];
int i = 0;
foreach(DataRow row in dt.Rows)
{
excelSheets[i] = row["TABLE_NAME"].ToString();
i++;
}
for(int j=0; j < excelSheets.Length; j++)
{
OleDbCommand cmd = new OleDbCommand("Select * from " + excelSheets[j], excelConnection);
excelConnection.Open();
OleDbDataReader dReader;
dReader = cmd.ExecuteReader();
SqlBulkCopy sqlBulk = new SqlBulkCopy(strConnection);
sqlBulk.DestinationTableName = "YourDestinationTableName";
sqlBulk.WriteToServer(dReader);
excelConnection.Close();
}
Note: Not tested

public void importdatafromexcel(string excelfilepath)
{
//declare variables - edit these based on your particular situation
string ssqltable = "test_data";//sql table name
// make sure your sheet name is correct, here sheet name is sheet1, so you can change your sheet name if havedifferent
string myexceldataquery = "select * from [Sheet1$]";
try
{
//create our connection strings
string sexcelconnectionstring = #"provider=microsoft.jet.oledb.4.0;data source=" + excelfilepath + ";extended properties=" + "\"excel 8.0;hdr=yes;\"";
string ssqlconnectionstring = "server=ServerName;user id=sa;password=sa;database=Databasename;connection reset=false";
//execute a query to erase any previous data from our destination table
string sclearsql = "Delete from " + ssqltable;
SqlConnection sqlconn = new SqlConnection(ssqlconnectionstring);
SqlCommand sqlcmd = new SqlCommand(sclearsql, sqlconn);
sqlconn.Open();
sqlcmd.ExecuteNonQuery();
sqlconn.Close();
//series of commands to bulk copy data from the excel file into our sql table
OleDbConnection oledbconn = new OleDbConnection(sexcelconnectionstring);
OleDbCommand oledbcmd = new OleDbCommand(myexceldataquery, oledbconn);
oledbconn.Open();
OleDbDataReader dr = oledbcmd.ExecuteReader();
SqlBulkCopy bulkcopy = new SqlBulkCopy(ssqlconnectionstring);
DataTable dt = new DataTable();
bulkcopy.DestinationTableName = ssqltable;
bulkcopy.WriteToServer(dr);
oledbconn.Close();
}
catch (Exception)
{
throw;
}
}
/*---------- call that file on buttonclick through OpenDialogBox--------*/
private void button1_Click(object sender, EventArgs e)
{
DialogResult result = openFileDialog1.ShowDialog();
if (result == DialogResult.OK) // Test result.
{
string strfilename = openFileDialog1.InitialDirectory + openFileDialog1.FileName;
importdatafromexcel(strfilename);
}
Console.WriteLine(result);
MessageBox.Show("Exported to SQL successfully");
}

Syntax error when opening an Excel workbook using C#

When I try to open an Excel workbook I get a syntax error. Here is the code I'm using:
string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;"
+ "Data Source=" + fileName + ";"
+"Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";";
OleDbConnection objConn = new OleDbConnection(connectionString);
OleDbCommand objCommand = new OleDbCommand(#"SELECT * FROM Sheet1$", objConn);
OleDbDataAdapter odjAdp = new OleDbDataAdapter();
odjAdp.SelectCommand = objCommand;
DataTable dt1 = new DataTable();
odjAdp.Fill(dt1);
GridView2.DataSource = dt1;
GridView2.DataBind();
Why is this happening?

Because of the dollar symbol that sheet name needs to be escaped, enclose it in square brackets;
#"SELECT * FROM [Sheet1$]"