I want to rename excel sheetname without using Microsoft.Office.Interop.Excel bec Ms Office is not installed on my server .
public void Main()
{
// TODO: Add your code here
var path = Dts.Variables["User::FilePath"].Value.ToString();
//Declare and initilize variables
string fileFullPath = path.ToString();
//Create Excel Connection
string ConStr;
string HDR;
HDR = "YES";
ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileFullPath + ";Extended Properties=\"Excel 12.0;HDR=" + HDR + ";IMEX=0\"";
OleDbConnection cnn = new OleDbConnection(ConStr);
//Get Sheet Name
cnn.Open();
DataTable dtSheet = cnn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
string sheetname;
sheetname = "";
//Only read data from provided SheetNumber
dtSheet.Rows[0]["TABLE_NAME"]=Dts.Variables["User::WorksheetName"].Value.ToString();
cnn.Close();
Dts.TaskResult = (int)ScriptResults.Success;
}
what i need to modify in my code to update the worksheet name with the value imported by the variable 'WorksheetName'.
Related
I had excel file, button (import), openfiledialog and gridview at VB.Net 2013.
My task is to make a button that will extract all data from excel file to datagridview
openFileDialog1.InitialDirectory = "C:\\Users\\ProgrammerPC1\\Desktop\\DLAV FILES";
openFileDialog1.Title = "Import Master Data";
openFileDialog1.FileName = "";
openFileDialog1.Filter = "Excel Files|*.xls;*.xlsx;*.xlsm";
try {
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
string name = "Sheet1";
string constr = #"provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + openFileDialog1.FileName + "'; Extended Properties=Excel 8.0; HDR=Yes; IMEX=1;";
System.Data.OleDb.OleDbConnection con = new System.Data.OleDb.OleDbConnection(constr);
System.Data.OleDb.OleDbCommand oconn = new System.Data.OleDb.OleDbCommand("SELECT * FROM [" + name + "$]", con);
con.Open();
System.Data.OleDb.OleDbDataAdapter adapter = new System.Data.OleDb.OleDbDataAdapter(oconn);
DataTable data = new DataTable();
adapter.Fill(data);
dataGridView1.DataSource = data;
}
else
{
MessageBox.Show("Operation Cancelled");
}
}catch (Exception err)
{
MessageBox.Show(err.Message);
}
My Error is
external table is not in the expected format
I found that you're using same connection string provider (MS Jet OLEDB 4.0 Provider) for both XLS (for Excel 97-2003) and XLSX (for Excel 2007 & above) files, hence causing external table is not in the expected format error when trying to read XLSX/XLSM files.
You need to use 2 separate connection string and switch them based from file extension stored in OpenFileDialog with Path.GetExtension() method as in given example below:
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
string extension = Path.GetExtension(openFileDialog1.FileName); // get file extension
string name = "Sheet1"
using (System.Data.OleDb.OleDbConnection con = new System.Data.OleDb.OleDbConnection())
{
switch (extension)
{
case ".xls": // Excel 97-2003 files
// Excel 97-2003 connection string
string xlsconstr = #"Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + openFileDialog1.FileName + "'; Extended Properties=Excel 8.0; HDR=Yes; IMEX=1;";
con.ConnectionString = xlsconstr;
break;
case ".xlsx": // Excel 2007 files
case ".xlsm":
// Excel 2007+ connection string, see in https://www.connectionstrings.com/ace-oledb-12-0/
string xlsxconstr = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" + openFileDialog1.FileName + "'; Extended Properties=Excel 12.0; HDR=Yes; IMEX=1;";
con.ConnectionString = xlsxconstr;
break;
}
using (System.Data.OleDb.OleDbCommand oconn = new System.Data.OleDb.OleDbCommand("SELECT * FROM [" + name + "$]", con))
{
con.Open();
System.Data.OleDb.OleDbDataAdapter adapter = new System.Data.OleDb.OleDbDataAdapter(oconn);
DataTable data = new DataTable();
adapter.Fill(data);
dataGridView1.DataSource = data;
}
}
}
else
{
MessageBox.Show("Operation Cancelled");
}
I wanna read data from excel spreadsheet and insert them into Access data base(.accdb). there is a problem with data format in excel. some cells are in incorrect type. Correct format for example is 99999 and incorrect is 9999-888 . because of dash(-) ole data adapter return null values instead of text. how should i get whole cell block?
I have tried change the cell format of excel from General to Text but the problem is still available.
thanks
string connectionStringExcel = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + openFileDialog1.FileName + ";Extended Properties=Excel 12.0;";
using (OleDbConnection connectionExcel = new OleDbConnection(connectionStringExcel))
{
OleDbDataAdapter daExcel = new OleDbDataAdapter(#"SELECT * FROM [priclist$]", connectionExcel);
DataTable dtExcel = new DataTable();
daExcel.Fill(dtExcel);
dataGridView1.DataSource = dtExcel;
}
By default, the Microsoft.ACE.OLEDB.12.0 provider tries to determine variable type for each column, and assumes the majority type is the column type.
You can override this behaviour by specifying IMEX=1 in the connection string, which uses text when encountering mixed-field types instead of setting the ones not matching the type to Null. Then you can handle the values in your C# code:
string connectionStringExcel = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + openFileDialog1.FileName + ";Extended Properties=Excel 12.0;IMEX=1;";
Read more about the IMEX property by following the link in the comment below
I use the following code to transfer data from Excel to datagrid :
private void btnreadExcell_MouseDown(object sender, MouseButtonEventArgs e)
{
try
{
string filePath = string.Empty;
string fileExt = string.Empty;
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "Excel Files|*.xls;*.xlsx;*.xlsm";
Nullable<bool> result = ofd.ShowDialog();
if (result == true)//if there is a file choosen by the user
{
filePath = ofd.FileName;//get the path of the file
try
{
DataTable dtExcel = new DataTable();
dtExcel = ReadExcel(filePath, fileExt);//read excel file
// dataGrid.Visible = true;
dataGrid.ItemsSource = dtExcel.DefaultView;
datagridheader();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
con.Close();
}
catch { MessageBox.Show("error");}
}
public DataTable ReadExcel(string fileName, string fileExt)
{
DataTable dtexcel = new DataTable();
try
{
string conn = string.Empty;
if (fileExt.CompareTo(".xls") == 0)//compare the extension of the file
conn = #"provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";Extended Properties='Excel 8.0;HRD=Yes;IMEX=1';";//for below excel 2007
else
conn = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1';";//for above excel 2007
using (OleDbConnection con = new OleDbConnection(conn))
{
try
{
OleDbDataAdapter oleAdpt = new OleDbDataAdapter("select * from [Sheet1$]", con);//here we read data from sheet1
oleAdpt.Fill(dtexcel);//fill excel data into dataTable
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
conn.Clone();
}
catch { MessageBox.Show("error"); }
return dtexcel;
}
My error has been Solved!!! with set both IMEX=1 And HDR=No. if you have changed your header in excel files(first row) use below code to solve same problem as i asked above.
try this
(two connection string have same meaning)
string connectionStringExcel = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + openFileDialog1.FileName + ";Extended Properties='Excel 12.0;HDR=No;IMEX=1';"
Or
string connectionStringExcel = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" +"T13970524.xlsx" + ";Extended Properties=\"Excel 12.0 Xml;HDR=No;IMEX=1\";";
I am developing a program to import excel spreadsheets with C # language, using the OLEDB component, when importing a spreadsheet with 100547 rows the program can only read 54046.
Follows the source code:
public class ReadExcel
{
public string ConnectionExcel(ExcelUpload excelUpload)
{
//connection String for xls file format.
if (excelUpload.fileExtension == ".xls")
{
excelUpload.excelConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelUpload.fileLocation + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
//connection String for xlsx file format.
else if (excelUpload.fileExtension == ".xlsx")
{
excelUpload.excelConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelUpload.fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}else
{
excelUpload.excelConnectionString = "";
}
return excelUpload.excelConnectionString;
}
public DataTable readArqExcel(string excelConnectionString, DataSet ds)
{
//Create Connection to Excel work book and add oledb namespace
OleDbConnection excelConnection = new OleDbConnection(excelConnectionString);
excelConnection.Open();
DataTable dt = new DataTable();
dt = excelConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if (dt == null)
{
return null;
}
//Numero de planilhas contidas no excel
String[] excelSheets = new String[dt.Rows.Count];
int count = 0;
//excel data saves in temp file here.
foreach (DataRow row in dt.Rows)
{
excelSheets[count] = row["TABLE_NAME"].ToString();
count++;
}
OleDbConnection excelConnection1 = new OleDbConnection(excelConnectionString);
string query = string.Format("Select * from [{0}]", excelSheets[0]);
using (OleDbDataAdapter dataAdapter = new OleDbDataAdapter(query, excelConnection1))
{
dataAdapter.Fill(ds);
}
excelConnection.Close();
return ds.Tables[0];
}
I have tested IIS 8 (REMOTE SERVER) and IIS Express (Visual Studio local server), I noticed that on the IIS Express server the code works perfectly, but in IIS 8 the code ends up reading the file in half.
Is it some kind of web server configuration?
problem resolved, i altered string of connection OLEBD with MsExcel.
Alter parameter IMEX = 2 for IMEX = 1, as below
if (excelUpload.fileExtension == ".xls")
{
excelUpload.excelConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelUpload.fileLocation + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";
}
//connection String for xlsx file format.
else if (excelUpload.fileExtension == ".xlsx")
{
excelUpload.excelConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelUpload.fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=1\"";
}
I'm having a excel file in a folder. but i dont know to fetch that file from the folder.
but I'm checking whether the file exists.
here is my code:
protected void Page_Load(object sender, EventArgs e)
{
string filePath = Server.MapPath("~/Upload/Sample.xlsx");
bool fileexists = File.Exists(filePath); //Here fileexists = true
}
I need to save that excel file in sql database.
I need to save the fileName(varchar(256)),Data(varbinary(max)),Path(varchar(256)) of that excel file into sql database.
please help me out
Try this to get and read an xlsx file .
if (Directory.Exists(Server.MapPath("path")))
{
string filename = Path.GetFileName("path");// to get filename
string conStr = string.Empty;
string extension = Path.GetExtension(filename);// get extension
if (extension == ".xls" || extension == ".xlsx")
{
switch (extension)
{
case ".xls": //Excel 1997-2003
conStr = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source='" + mappingPath + "';" + "Extended Properties=Excel 8.0;";
break;
case ".xlsx": //Excel 2007
conStr = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source='" + mappingPath + "';" + "Extended Properties=Excel 8.0;";
break;
default:
break;
}
OleDbConnection connExcel = new OleDbConnection(conStr.ToString());
OleDbCommand cmdExcel = new OleDbCommand();
OleDbDataAdapter oda = new OleDbDataAdapter();
connExcel.Open();
DataTable dtExcelSchema;
dtExcelSchema = connExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
string SheetName = dtExcelSchema.Rows[0]["TABLE_NAME"].ToString();
ViewState["SheetName"] = SheetName;
//Selecting Values from the first sheet
//Sheet name must be as Sheet1
OleDbDataAdapter da = new OleDbDataAdapter("SELECT * From [" + SheetName + "]", conStr.ToString()); // to fetch data from excel
da.Fill(dtExcel);
}
This is much simpler than you think, it should be something like:
if (File.Exists(filePath)) {
byte[] data = File.ReadAllBytes(filePath);
string fileName = Path.GetFileName(filePath);
const string query = "INSERT INTO Files (FileName, Data, Path) VALUES (#FileName, #Data, #Path)";
using (var connection = new SqlConnection(connectionString))
using (var command = new SqlCommand(query, connection)) {
command.Parameters.AddWithValue("#FileName", fileName);
command.Parameters.AddWithValue("#Data", data);
command.Parameters.AddWithValue("#Path", filePath);
connection.Open();
command.ExecuteNonQuery();
}
}
I have an excel file and an oledb connection to it. When reading data while file is opened in windows, it throws the following error (at Adapter.Fill method).
However, the code runs fine when file is not opened manually.
private System.Data.DataSet GetExcelData()
{
// Create new DataSet to hold information from the worksheet.
System.Data.DataSet objDataset1 = new System.Data.DataSet();
DataTable dt = new DataTable();
try
{
string path = ConfigurationManager.AppSettings["ExcelFilePath"];
//string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0;";
string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1;\"";
OleDbConnection objConn = new OleDbConnection(connectionString);
objConn.Open();
//String strConString = "SELECT * FROM [Data Version5.2$A2:ZZ] where [Status] = 'aa'";//Status
String strConString = "SELECT * FROM [Data Version5.2$A2:ZZ] where [Status] IS NULL OR [Status]='SubReport'";//Status SubReport
OleDbCommand objCmdSelect = new OleDbCommand(strConString, objConn);
OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();
// Pass the Select command to the adapter.
objAdapter1.SelectCommand = objCmdSelect;
// Fill the DataSet with the information from the work sheet.
objAdapter1.Fill(objDataset1, "ExcelData");
objConn.Close();
}
catch (Exception ex)
{
throw ex;
}
return objDataset1;
}
The error message is
Assuming you don't need to write to the file, try adjusting your connection string to include the read only mode (Mode=Read). I have that in all of mine (where I don't need to write to the file) and I've never had a problem reading from workbooks that are already open:
string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" +
path + ";Mode=Read;Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1;\"";
I also don't tend to read Excel files as XML, so the Extended Properties for my connection strings are Excel 12.0;HDR=YES;IMEX=1;