I made a program to open Excel file.
There are exist data page and blank page.
Can I add only the pages where the data exists in the combo box?
Can I use ButtonEvent to view only pages that contain data?
string filePath = openFileDialog1.FileName;//파일 경로 가져오기
string filename = openFileDialog1.SafeFileName;//파일 이름만 가져오기
string fileExtension = Path.GetExtension(filePath);
//string connectionString = string.Empty;
string sheetName = string.Empty;
using (OleDbConnection con = new OleDbConnection(ConnectStr()))
{
using (OleDbCommand cmd = new OleDbCommand())
{
using (OleDbDataAdapter oda = new OleDbDataAdapter())
{
DataTable dt = new DataTable();
cmd.CommandText = "SELECT * From [" + sheetName + "]";
cmd.Connection = con;
con.Open();
oda.SelectCommand = cmd;
oda.Fill(dt);
con.Close();
dataGridView1.DataSource = dt;
}
}
}
public string ConnectStr()
{
string filePath = openFileDialog1.FileName;
string filename = openFileDialog1.SafeFileName;//파일 이름만 가져오기
string fileExtension = Path.GetExtension(filePath);
string connectionString = string.Empty;
string sheetName = string.Empty;
switch (fileExtension)
{
case ".xls": //Excel 97-03버전
connectionString = string.Format(Excel03ConString, filePath);
break;
case ".xlsx": //Excel 07이상 버전
connectionString = string.Format(Excel16ConString, filePath);
break;
}
return connectionString;
}
I don't really get what is this. But I beg you need to show only specific sheet from spreadsheet correct me if i'm wrong.
There is a SQL commend that we can query from the specific sheet.
try
{
this.txtImportFilePath.Text = opd.FileName;
OleDbConnection con = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;data source=" + this.txtImportFilePath.Text + ";Extended Properties=Excel 8.0;");
StringBuilder stbQuery = new StringBuilder();
stbQuery.Append("Select * From [Sheet1$]");
OleDbDataAdapter adp = new OleDbDataAdapter(stbQuery.ToString(), con);
DataSet dsXLS = new DataSet();
adp.Fill(dsXLS);
DataView dvEmp = new DataView(dsXLS.Tables[0]);
trnxlistDataview.DataSource = dvEmp;
}
catch (Exception ex)
{
MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
}
Related
good afternoon,
I am trying to create a method that returns the data of an excel file to call it through a FileDialog for example ... Here is my code:
public static DataSet MtdGetExcel(string prtlocalFile)
{
string sDBstrExcel = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=0\"", prtlocalFile);
OleDbConnection conexaoExcel = new OleDbConnection(sDBstrExcel);
conexaoExcel.Open();
DataTable dt = conexaoExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
DataSet output = new DataSet();
foreach (DataRow row in dt.Rows)
{
string sheet = row["TABLE_NAME"].ToString(); //Obtém o nome da planilha corrente
OleDbCommand cmd = new OleDbCommand("SELECT * FROM [" + sheet + "]", conexaoExcel); //Obtém todas linhas da planilha corrente
cmd.CommandType = CommandType.Text;
DataTable outputTable = new DataTable(sheet); //Copia os dados da planilha para o DataTable
output.Tables.Add(outputTable);
new OleDbDataAdapter(cmd).Fill(outputTable);
}
conexaoExcel.Close();
return output;
}
But when I call the method does not return anything in the DataGridView...
public void testeImportExcel()
{
try
{
OpenFileDialog fdlg = new OpenFileDialog();
fdlg.Title = "Selecione o relatório do Detran";
fdlg.InitialDirectory = #"c:\";
//string endereco = fdlg.FileName;
//txtNomeArquivo.Text = fdlg.FileName;
fdlg.Filter = "Excel File (*.xlsx)|*.xlsx";
//fdlg.Filter = "Excel File (*.csv)|*.csv";
fdlg.FilterIndex = 1;
fdlg.RestoreDirectory = true;
if (fdlg.ShowDialog() == DialogResult.OK)
{
myDtGridView.DataSource = MtdGetExcel(fdlg.FileName);
myDtGridView.AutoGenerateColumns = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
Result:
Can you help me?
Here is my exact method that I have in production:
public DataTable ReadExcel(string fileName, string TableName)
{
DataTable dt = new DataTable();
OleDbConnection conn = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=\"Excel 8.0\"");
OleDbCommand cmd = new OleDbCommand("SELECT * FROM " + TableName, conn);
try
{
conn.Open();
OleDbDataReader reader = cmd.ExecuteReader();
while (!reader.IsClosed)
{
dt.Load(reader);
}
}
finally
{
conn.Close();
}
return dt;
}
I'm sure just by looking at it you can tell- this method takes in the fileName (or file path) of the Excel you're wanting to read from. Creates the connection string and command. Excel will be read like a database and its worksheets will be read like tables. TableName is the name of the worksheet (table). This method returns a DataTable that can be added to a DataSet if needed.
I know this might be a repeated question but I couldn't find it anywhere.
I am importing data from excel to gridview but how do I save the gridview data into database and the column from the gridview are auto generated.
The data is already reflected in the gridview how do i save it in the database?
It would be better if anyone can teach me how to insert directly from excel to database without using gridview as the medium.(tried using this but kept telling me that the excel sheet does not exist).
code to bind grid view:
string conStr = "";
switch (Extension)
{
case ".xls": //Excel 97-03
conStr = ConfigurationManager.ConnectionStrings["Excel03ConString"]
.ConnectionString;
break;
case ".xlsx": //Excel 07
conStr = ConfigurationManager.ConnectionStrings["Excel07ConString"]
.ConnectionString;
break;
}
conStr = String.Format(conStr, FilePath, isHDR);
OleDbConnection connExcel = new OleDbConnection(conStr);
OleDbCommand cmdExcel = new OleDbCommand();
OleDbDataAdapter oda = new OleDbDataAdapter();
DataTable dt = new DataTable();
cmdExcel.Connection = connExcel;
//Get the name of First Sheet
connExcel.Open();
DataTable dtExcelSchema;
dtExcelSchema = connExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
string SheetName = dtExcelSchema.Rows[0]["TABLE_NAME"].ToString();
connExcel.Close();
//Read Data from First Sheet
connExcel.Open();
cmdExcel.CommandText = "SELECT * From [" + SheetName + "]";
oda.SelectCommand = cmdExcel;
oda.Fill(dt);
connExcel.Close();
//Bind Data to GridView
GridView1.Caption = Path.GetFileName(FilePath);
GridView1.DataSource = dt;
GridView1.DataBind();
Yes I am using code from aspsnippets.
I recently done this, but i only did it for fileType Microsoft Office Excel Worksheet (.xlsx) . At first you have to copy the excel file to your Application directory, Then you save the data to DataTable and finally bind it to Gridview.
Use these namespaces
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.IO;
Here is the method
private void Import_To_GridTest(string FilePath)
{
DataTable dt =new DataTable();
try
{
string sSheetName = null;
string sConnection = null;
DataTable dtTablesList = default(DataTable);
OleDbDataAdapter oda = new OleDbDataAdapter();
OleDbConnection oleExcelConnection = default(OleDbConnection);
sConnection = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Macro;HDR=YES;IMEX=1\"";
sConnection = String.Format(sConnection, FilePath);
oleExcelConnection = new OleDbConnection(sConnection);
oleExcelConnection.Open();
dtTablesList = oleExcelConnection.GetSchema("Tables");
if (dtTablesList.Rows.Count > 0)
{
sSheetName = dtTablesList.Rows[0]["TABLE_NAME"].ToString();
}
dtTablesList.Clear();
dtTablesList.Dispose();
if (!string.IsNullOrEmpty(sSheetName))
{
var oleExcelCommand = oleExcelConnection.CreateCommand();
oleExcelCommand.CommandText = "Select * From [" + sSheetName + "]";
oleExcelCommand.CommandType = CommandType.Text;
oda.SelectCommand = oleExcelCommand;
oda.Fill(dt);
oleExcelConnection.Close();
}
oleExcelConnection.Close();
gridview1.DataSource = dt;
gridview1.DataBind();
}
catch (Exception e)
{
lblMsg.Text = "Unspecified Error Occured..!! <br>" + e.Message;
divMsg.Attributes["class"] = "alert alert-danger";
mainDiv.Visible = true;
File.Delete(FilePath);
}
}
Finally the Submit button Click event
protected void btnsubmit_OnClick(object sender, EventArgs e)
{
if (fileUpload1.HasFiles)
{
string FileName = Path.GetFileName(fileUpload1.PostedFile.FileName);
string FolderPath = "Excels/"; // your path
string FilePath = Server.MapPath(FolderPath + DateTime.Now.ToString("ddmmyyhhmmss") + FileName);
// copy and save the the excel
fileUpload1.SaveAs(FilePath);
Import_To_GridTest(FilePath);
}
}
Update : For saving data to database Use SqlBulkCopy Class
private void SqlbulkCopy(DataTable dt)
{
if (dt.Rows.Count > 0)
{
string consString = ConfigurationManager.ConnectionStrings["Bulkcopy"].ConnectionString;
using (SqlConnection con = new SqlConnection(consString))
{
using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(con))
{
//Set the database table name
sqlBulkCopy.DestinationTableName = "dbo.leads";
//[OPTIONAL]: Map the DataTable columns with that of the database table
sqlBulkCopy.ColumnMappings.Add("Currunt_Company", "CuCompany");
sqlBulkCopy.ColumnMappings.Add("Currunt_Product", "CuProduct");
sqlBulkCopy.ColumnMappings.Add("Quantity", "Quantity");
sqlBulkCopy.ColumnMappings.Add("Unit_Price", "UnitPrice");
sqlBulkCopy.ColumnMappings.Add("Total_Price", "TotalPrice");
sqlBulkCopy.ColumnMappings.Add("Contect_Person", "ContectPerson");
con.Open();
sqlBulkCopy.WriteToServer(dt);
con.Close();
}
}
}
}
I'm uploading data to DB table using excel sheet
I'm uploading data to ProductStatisticsTemp table
In that table I have following columns
Product_ID
ProductNameEn
ProductNameAr
this the upload data POST method
[HttpPost]
public ActionResult FileUpload(HttpPostedFileBase file)
{
if (Request.Files["file"].ContentLength > 0)
{
string fileExtension = System.IO.Path.GetExtension(Request.Files["file"].FileName);
if (fileExtension == ".xls" || fileExtension == ".xlsx")
{
string fileLocation = Server.MapPath("~/Content/ExcelFiles/") + Request.Files["file"].FileName;
if (System.IO.File.Exists(fileLocation))
{
System.IO.File.Delete(fileLocation);
}
Request.Files["file"].SaveAs(fileLocation);
string excelConnectionString = string.Empty;
excelConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
//connection String for xls file format.
if (fileExtension == ".xls")
{
excelConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
//connection String for xlsx file format.
else if (fileExtension == ".xlsx")
{
excelConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}
//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;
}
String[] excelSheets = new String[dt.Rows.Count];
int t = 0;
//excel data saves in temp file here.
foreach (DataRow row in dt.Rows)
{
excelSheets[t] = row["TABLE_NAME"].ToString();
t++;
}
OleDbConnection excelConnection1 = new OleDbConnection(excelConnectionString);
string query = string.Format("Select * from [{0}]", excelSheets[0]);
using (OleDbDataAdapter dataAdapter = new OleDbDataAdapter(query, excelConnection1))
{
dataAdapter.Fill(ds);
}
}
if (fileExtension.ToString().ToLower().Equals(".xml"))
{
string fileLocation = Server.MapPath("~/Content/ExcelFiles") + Request.Files["FileUpload"].FileName;
if (System.IO.File.Exists(fileLocation))
{
System.IO.File.Delete(fileLocation);
}
Request.Files["FileUpload"].SaveAs(fileLocation);
XmlTextReader xmlreader = new XmlTextReader(fileLocation);
// DataSet ds = new DataSet();
ds.ReadXml(xmlreader);
xmlreader.Close();
}
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
string conn = ConfigurationManager.ConnectionStrings["dbconnection"].ConnectionString;
SqlConnection con = new SqlConnection(conn);
string query = "Insert into ProductStatisticsTemp(Product_ID,ProductNameEn,ProductNameAr) Values('" + ds.Tables[0].Rows[i][0] + "','" + ds.Tables[0].Rows[i][1] + "','" + ds.Tables[0].Rows[i][2] )";
con.Open();
SqlCommand cmd = new SqlCommand(query, con);
cmd.ExecuteNonQuery();
con.Close();
}
}
return RedirectToAction("FileUpload", "FileUpload");
}
But in here data saving smoothly , but ProductNameAr fields Arabic letters values save as "?"
ex: If excel value حساب التوفير للاستثمار Albrka
then its saving in database table as ???? ??????? ????????? Albrka
How to save as exact format in the excel sheet
ps. this ProductNameAr data type in Database table is NVARCHAR
You use non-Unicode string literals 'value' when you should use Unicode literals in the form N'value'
You better rewrite as parameterized SqlCommand passing the values using AddWithValue
string query = "Insert into ProductStatisticsTemp(Product_ID,ProductNameEn,ProductNameAr) Values(#Product_ID,#ProductNameEn,#ProductNameAr)";
SqlCommand cmd = new SqlCommand(query, con);
cmd.Parameters.AddWithValue("#Product_ID", ds.Tables[0].Rows[i][0]);
...etc...
You don't need to re-create and open the SqlConnection inside the loop
I'm converting .csv file to datatable like below.
string header = isFirstRowHeader ? "Yes" : "No";
string itinerarycsvfilePath = Path.GetDirectoryName(#"D:\projects\MSC cruise\MSCCruiseProjects\MsccruiseWithLogin\MsccruiseWithLogin\UnzippedFiles\itinff_gbr_eng.csv");
string filename = Path.GetFileName(#"D:\projects\MSC cruise\MSCCruiseProjects\MsccruiseWithLogin\MsccruiseWithLogin\UnzippedFiles\itinff_gbr_eng.csv");
string sql = #"SELECT * FROM [" + filename + "]";
using (OleDbConnection connection = new OleDbConnection(#"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + itinerarycsvfilePath +
";Extended Properties=\"Text;HDR=" + header + "\""))
using (OleDbCommand command = new OleDbCommand(sql, connection))
using (OleDbDataAdapter adapter = new OleDbDataAdapter(command))
{
DataTable dataTable = new DataTable("ItineraryDetails");
dataTable.Locale = CultureInfo.CurrentCulture;
adapter.Fill(dataTable);
return dataTable;
}
then the result when I look with quick watch
Am I doing something wrong.I feel like that because table does not show like columns.
what can I do for that.
hope your help.
See code below
public class CSVReader
{
public DataSet ReadCSVFile(string fullPath, bool headerRow)
{
string path = fullPath.Substring(0, fullPath.LastIndexOf("\\") + 1);
string filename = fullPath.Substring(fullPath.LastIndexOf("\\") + 1);
DataSet ds = new DataSet();
try
{
if (File.Exists(fullPath))
{
string ConStr = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0}" + ";Extended Properties=\"Text;HDR={1};FMT=Delimited\\\"", path, headerRow ? "Yes" : "No");
string SQL = string.Format("SELECT * FROM {0}", filename);
OleDbDataAdapter adapter = new OleDbDataAdapter(SQL, ConStr);
adapter.Fill(ds, "TextFile");
ds.Tables[0].TableName = "Table1";
}
foreach (DataColumn col in ds.Tables["Table1"].Columns)
{
col.ColumnName = col.ColumnName.Replace(" ", "_");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return ds;
}
}
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();
}
}