Develop Reference

Unable to import excel to DB table in server

I am using the below code to import excel data into DB table. The code works fine in my local and when I move this code to server the import fails in between. Also I don't get any error messages and I get a message data saved successfully.
For Ex: The excel has 75,000 data's and only 13,500 records are getting inserted and the size of the excel file is 5 MB.
Any suggestions about the possible problems?
CS:
protected void btnImportData_Click(object sender, EventArgs e)
{
try
{
string strCS = string.Empty; ;
string strFileType = Path.GetExtension(FileUploadExcel.FileName).ToLower();
string query = "";
lblError.Text = "";
string FileName = string.Empty;
FileName = Path.GetFileName(FileUploadExcel.PostedFile.FileName);
string Extension = Path.GetExtension(FileUploadExcel.PostedFile.FileName);
string FolderPath = ConfigurationManager.AppSettings["FolderPath"];
string path = Path.GetFileName(Server.MapPath(FileUploadExcel.FileName));
System.IO.File.Delete(Server.MapPath(FolderPath) + path);
FileUploadExcel.SaveAs(Server.MapPath(FolderPath) + path);
string filePath = Server.MapPath(FolderPath) + path;
if (strFileType != String.Empty)
{
if (strFileType.Trim() == ".xls")
{
strCS = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
else if (strFileType.Trim() == ".xlsx")
{
strCS = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}
else
{
ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Please upload the correct file format')", true);
return;
}
try
{
OleDbConnection conn = new OleDbConnection(strCS);
if (conn.State == ConnectionState.Closed)
conn.Open();
System.Data.DataTable dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
string sheetname = dt.Rows[0]["Table_Name"].ToString();
query = "SELECT * FROM [" + sheetname + "]";
OleDbCommand cmd = new OleDbCommand(query, conn);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
if (conn.State == ConnectionState.Open)
{
conn.Close();
conn = null;
}
string strSqlTable = "TABLENAME";
string sclearsql = "delete from " + strSqlTable;
SqlConnection sqlconn = new SqlConnection(strCon);
SqlCommand sqlcmd = new SqlCommand(sclearsql, sqlconn);
sqlconn.Open();
sqlcmd.ExecuteNonQuery();
sqlconn.Close();
OleDbConnection oledbconn = new OleDbConnection(strCS);
oledbconn.Open();
OleDbCommand oledbcmd = new OleDbCommand(query, oledbconn);
oledbcmd.CommandTimeout = 120;
OleDbDataReader dReader = oledbcmd.ExecuteReader();
SqlBulkCopy bulkCopy = new SqlBulkCopy(strCon);
bulkCopy.DestinationTableName = strSqlTable;
bulkCopy.BulkCopyTimeout = 120;
bulkCopy.BatchSize = 1000;
bulkCopy.WriteToServer(dReader);
oledbconn.Close();
ClientScript.RegisterStartupScript(Page.GetType(), "alert", "alert('Data saved successfully');window.location='Panel.aspx';", true);
}
catch (Exception ex)
{
lblError.Text = "Upload status: The file could not be uploaded due to following reasons.Please check: " + ex.Message;
}
}
else
{
ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Please select a file to import the data.')", true);
}
}
catch (Exception ex)
{
lblError.Text = "Upload status: The file could not be uploaded due to following reasons.Please check: " + ex.Message;
}
}

Hi remove the data reader on you code which read the excel file twice and use the dataset to fill out your SQL table:
See below:
DataTable dtexcel = new DataTable();
using (OleDbConnection conn = new OleDbConnection(strCS))
{
conn.Open();
DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
//Looping a first Sheet of Xl File
DataRow schemaRow = schemaTable.Rows[0];
string sheet = schemaRow["TABLE_NAME"].ToString();
if (!sheet.EndsWith("_"))
{
string query = "SELECT * FROM [" + sheet + "]";
OleDbDataAdapter daexcel = new OleDbDataAdapter(query, conn);
dtexcel.Locale = CultureInfo.CurrentCulture;
daexcel.Fill(dtexcel);
}
}
using (SqlConnection sqlconn = new SqlConnection(strCon))
{
SqlCommand sqlcmd = new SqlCommand(sclearsql, sqlconn);
sqlconn.Open();
sqlcmd.ExecuteNonQuery();
}
using (SqlConnection sqlconn = new SqlConnection(strCon))
{
using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(sqlconn))
{
//Set the database table name
sqlBulkCopy.DestinationTableName = strSqlTable;
sqlconn.Open();
sqlBulkCopy.WriteToServer(dtexcel);
}
}

Have you tried using the dts wizard? it is a nice tool if you have a excel sheet with data.
you use it by opening the command prompt. windowsbutton + r, and the write cmd.
and from in here you write dtswizard
then a wizard opens in a new window where you can select the excel sheet that you want to insert. There is many tutorials on google.
Hope you can use this

to import certain cells in the column in Excel to C #

My excel file is that column1A: city,ankara,ankara,ankara,istanbul,istanbul,izmir
I want to that combobox looks like ankara,istanbul,izmir
it doesn't again.
OleDbConnection baglan = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0");
baglan.Open();
string sql = "Select * From [Sayfa1$A1:A100] ";
OleDbCommand komut = new OleDbCommand(sql, baglan);
OleDbDataReader dr = null;
dr = komut.ExecuteReader();
while (dr.Read())
{
if (dr[0] != "")
{
combobox1.Items.Add(dr[0].ToString());
}
else
{
break;
}
}
baglan.Close();

if (dr[0] != ""){
if(!combobox1.Items.Contains(dr[0])){
combobox1.Items.Add(dr[0].ToString());
}
}

Try this:
OleDbConnection baglan = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0");
baglan.Open();
string sql = "Select * From [Sayfa1$A1:A100] ";
OleDbCommand komut = new OleDbCommand(sql, baglan);
OleDbDataReader dr = null;
dr = komut.ExecuteReader();
DataTable dt = new DataTable();
dt.Load(dr);
// To Copy distinct values from specified column to a different datatable
DataTable diffValues = dt.DefaultView.ToTable(true, "ColName");
combobox1.DataSource = datatable;
It works for me.

Inserting records to MSAccess

Can someone explain to me why it wont allow me to insert my record into MS Access?
for some reason i have tried everything that is humanly possible but it wont let me do what i need to do. what i need to do is allow record to be written from my c Sharp program and would want to press a button which will insert the value into my MS Access.
void Insert_Record(object s, EventArgs e)
{
string dbconnection = "Provider=Microsoft.ACE.OLEDB.12.0;" + #"data source =BookCSharp.accdb";
string dbcommand = "INSERT INTO BookKey, Title, Pages from Books;";
OleDbConnection conn = new OleDbConnection(dbconnection);
OleDbCommand comm = new OleDbCommand(dbcommand, conn);
OleDbDataAdapter adapter = new OleDbDataAdapter(comm);
conn.Open();
adapter.Fill(ds, "Books");
conn.Close();
DataTable dt = ds.Tables[0];
//define a new record and place it into a new DataRow
DataRow newRow = dt. NewRow();
newRow["BookKey"] = txtBookKey.Text;
newRow["Title"] = txtTitle.Text;
newRow["Pages"] = txtPages.Text;
//add the new DataRow to DataTable
dt.Rows.Add(newRow);
//update DB
adapter.Update(ds, "Books");
//accept changes
ds.AcceptChanges();
//update listBox1
lstDisplayBooks.Items.Clear();
foreach (DataRow row in ds.Tables[0].Rows)
{
lstDisplayBooks.Items.Add(row["BookKey"] + " " + row["Title"] + " (" + row["Pages"] + ")");
}
txtBookKey.Enabled = false;
txtBookKey.Text = " ";
txtTitle.Enabled = false;
txtTitle.Text = " ";
txtPages.Enabled = false;
txtPages.Text = " ";
btnInsert.Enabled = false;
}

An OleDbDataAdapter need a SELECT query and an OleDBCommandBuilder to generate automatically the INSERT/UPDATE/DELETE commands that will be used in the Update method
void Insert_Record(object s, EventArgs e)
{
string dbconnection = "Provider=Microsoft.ACE.OLEDB.12.0;" + #"data source =BookCSharp.accdb";
string dbcommand = "SELECT * FROM Books;";
using(OleDbConnection conn = new OleDbConnection(dbconnection))
using(OleDbCommand comm = new OleDbCommand(dbcommand, conn))
{
OleDbDataAdapter adapter = new OleDbDataAdapter(comm);
OleDbCommandBuilder builder = new OleDbCommandBuilder(adapter);
// See comments below for these properties
builder.QuotePrefix = "[";
builder.QuoteSuffix = "]";
conn.Open();
adapter.Fill(ds, "Books");
DataTable dt = ds.Tables[0];
DataRow newRow = dt. NewRow();
newRow["BookKey"] = txtBookKey.Text;
newRow["Title"] = txtTitle.Text;
newRow["Pages"] = txtPages.Text;
dt.Rows.Add(newRow);
builder.GetInsertCommand();
adapter.Update(ds, "Books");
}
//update listBox1
lstDisplayBooks.Items.Clear();
foreach (DataRow row in ds.Tables[0].Rows)
{
lstDisplayBooks.Items.Add(row["BookKey"] + " " + row["Title"] + " (" + row["Pages"] + ")");
}
txtBookKey.Enabled = false;
txtBookKey.Text = " ";
txtTitle.Enabled = false;
txtTitle.Text = " ";
txtPages.Enabled = false;
txtPages.Text = " ";
btnInsert.Enabled = false;
}
The example in the link for the OleDbCommandBuilder contains an example like this.
The code should fix your initial error, but really there is no need to use an OleDbDataAdapter in this scenario. If your only objective is just to add a new record to the datatable and you don't need to maintain a local datasource like a DataGridView it is a lot simpler to use directly the OleDbCommand with an appropriate written INSERT and parameterized query
void Insert_Record(object s, EventArgs e)
{
string dbconnection = "Provider=Microsoft.ACE.OLEDB.12.0;" + #"data source =BookCSharp.accdb";
string dbcommand = "INSERT INTO Books (BookKey, Title, Pages) VALUES(?,?,?);";
using(OleDbConnection conn = new OleDbConnection(dbconnection))
using(OleDbCommand comm = new OleDbCommand(dbcommand, conn))
{
conn.Open();
comm.Parameters.AddWithValue("#p1", txtBookKey.Text);
comm.Parameters.AddWithValue("#p2", txtTitle.Text);
comm.Parameters.AddWithValue("#p3", txtPages.Text);
comm.ExecuteNonQuery();
}
.....

How can i export gridview into MS Access(.mdb) in C#

My question is how can i export gridview into MS Access in C#
for this I am Using the following code:
String accessConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\...\\test.accdb;";
String sqlConnectionString = ConfigurationManager.ConnectionStrings["College"].ConnectionString;
//Make adapters for each table we want to export
SqlDataAdapter adapter1 = new SqlDataAdapter();
// SqlDataAdapter adapter2 = new SqlDataAdapter();
DataTable dtFillGrid = (DataTable)ViewState["FillGrid"];
//Fills the data set with data from the SQL database
// DataSet dataSet = new DataSet();
adapter1.Fill(dtFillGrid);
// adapter2.Fill(dataSet, "Table2");
//Create an empty Access file that we will fill with data from the data set
ADOX.Catalog catalog = new ADOX.Catalog();
catalog.Create(accessConnectionString);
//Create an Access connection and a command that we'll use
OleDbConnection accessConnection = new OleDbConnection(accessConnectionString);
OleDbCommand command = new OleDbCommand();
command.Connection = accessConnection;
command.CommandType = CommandType.Text;
accessConnection.Open();
//This loop creates the structure of the database
foreach (DataTable table in dtFillGrid.Rows)
{
String columnsCommandText = "(";
foreach (DataColumn column in table.Columns)
{
String columnName = column.ColumnName;
String dataTypeName = column.DataType.Name;
String sqlDataTypeName = getSqlDataTypeName(dataTypeName);
columnsCommandText += "[" + columnName + "] " + sqlDataTypeName + ",";
}
columnsCommandText = columnsCommandText.Remove(columnsCommandText.Length - 1);
columnsCommandText += ")";
command.CommandText = "CREATE TABLE " + table.TableName + columnsCommandText;
command.ExecuteNonQuery();
}
//This loop fills the database with all information
foreach (DataTable table in dtFillGrid.Rows)
{
foreach (DataRow row in table.Rows)
{
String commandText = "INSERT INTO " + table.TableName + " VALUES (";
foreach (var item in row.ItemArray)
{
commandText += "'" + item.ToString() + "',";
}
commandText = commandText.Remove(commandText.Length - 1);
commandText += ")";
command.CommandText = commandText;
command.ExecuteNonQuery();
}
}
accessConnection.Close();
but in this code I get an error:
The Type or Namespace name ADOX could not be found

According to accessConnectionString content you should install "Data Connectivity Components" in your machine.
It is available to download at http://www.microsoft.com/en-us/download/details.aspx?id=23734

You need to add a reference for Microsoft ADO Ext. 2.7 for DDL and Security(the version number may be different though) which can be found under the COM section of the references dialog , and then add using ADOX; in your code.

Here I did not export gridview in MS Access but I made a database in MS Access using C# with the help of this code
ADOX.Catalog cat = new ADOX.Catalog();
ADOX.Table table = new ADOX.Table();
//Create the table and it's fields.
table.Name = "Table1";
table.Columns.Append("PartNumber", ADOX.DataTypeEnum.adVarWChar, 6); // text[6]
table.Columns.Append("AnInteger", ADOX.DataTypeEnum.adInteger, 10); // Integer
try
{
cat.Create("Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=d:/m2.accdb;" + "Jet OLEDB:Engine Type=5");
cat.Tables.Append(table);
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;" + "Data Source=d:/m2.accdb");
conn.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.Connection = conn;
cmd.CommandText = "INSERT INTO Table1([PartNumber],[AnInteger]) VALUES (#FirstName,#LastName)";
cmd.Parameters.Add("#FirstName", OleDbType.VarChar).Value = "neha";
cmd.Parameters.Add("#LastName", OleDbType.VarChar).Value = 20;
cmd.ExecuteNonQuery();
conn.Close();
}
catch (Exception ex)
{
result = false;
}
cat = null;

How can I export GridView to MS Access in C#

I want to export grid to MS Access in C#
Here's the code that I've tried:
String accessConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:\\...\\test.accdb;";
String sqlConnectionString = ConfigurationManager.ConnectionStrings["College"].ConnectionString;
SqlDataAdapter adapter1 = new SqlDataAdapter();
adapter1.Fill(dtFillGrid);
ADOX.Catalog catalog = new ADOX.Catalog();
catalog.Create(accessConnectionString);
OleDbConnection accessConnection = new OleDbConnection(accessConnectionString);
OleDbCommand command = new OleDbCommand();
command.Connection = accessConnection;
command.CommandType = CommandType.Text;
accessConnection.Open();
foreach (DataTable table in dtFillGrid.Rows) {
String columnsCommandText = "(";
foreach (DataColumn column in table.Columns) {
String columnName = column.ColumnName;
String dataTypeName = column.DataType.Name;
String sqlDataTypeName = getSqlDataTypeName(dataTypeName);
columnsCommandText += "[" + columnName + "] " + sqlDataTypeName + ",";
}
columnsCommandText = columnsCommandText.Remove(columnsCommandText.Length - 1);
columnsCommandText += ")";
command.CommandText = "CREATE TABLE " + table.TableName + columnsCommandText;
command.ExecuteNonQuery();
}
//This loop fills the database with all information
foreach (DataTable table in dtFillGrid.Rows) {
foreach (DataRow row in table.Rows) {
String commandText = "INSERT INTO " + table.TableName + " VALUES (";
foreach (var item in row.ItemArray) {
commandText += "'" + item.ToString() + "',";
}
commandText = commandText.Remove(commandText.Length - 1);
commandText += ")";
command.CommandText = commandText; command.ExecuteNonQuery();
}
}
accessConnection.Close();
How can I do this?

I would suggest you create the MDB database, create the table(s) you want using sql, then at runtime bind the gridview, or loop through the results and do a batch import.
See here: http://msdn.microsoft.com/en-us/library/windows/desktop/ms677200(v=vs.85).aspx
using ADOX; // add a COM reference to "Microsoft ADO Ext. x.x for DDL and Security"
static void CreateMdb(string fileNameWithPath)
{
ADOX.Catalog cat = new ADOX.Catalog();
string connstr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Jet OLEDB:Engine Type=5";
cat.Create(String.Format(connstr, fileNameWithPath));
cat = null;
}

if you dont have problem with payement you can use 'Spire doc' to save datagrid into msAccess like so :
private void btnExportToAccess_Click(object sender, EventArgs e)
{
Spire.DataExport.Access.AccessExport accessExport = new
Spire.DataExport.Access.AccessExport();
accessExport.DataSource = Spire.DataExport.Common.ExportSource.DataTable;
accessExport.DataTable = this.dataGridView1.DataSource as DataTable;
accessExport.DatabaseName = #"..\..\ToMdb.mdb";
accessExport.TableName = "ExportFromDatatable";
accessExport.SaveToFile();
}
and Here a link where you can find more clarification

Here I am not export gridview in MS Access but I made a database in MS Access by using C# with the help of this code:
ADOX.Catalog cat = new ADOX.Catalog();
ADOX.Table table = new ADOX.Table();
//Create the table and it's fields.
table.Name = "Table1";
table.Columns.Append("PartNumber", ADOX.DataTypeEnum.adVarWChar, 6); // text[6]
table.Columns.Append("AnInteger", ADOX.DataTypeEnum.adInteger, 10); // Integer
try
{
cat.Create("Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=d:/m2.accdb;" + "Jet OLEDB:Engine Type=5");
cat.Tables.Append(table);
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;" + "Data Source=d:/m2.accdb");
conn.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.Connection = conn;
cmd.CommandText = "INSERT INTO Table1([PartNumber],[AnInteger]) VALUES (#FirstName,#LastName)";
cmd.Parameters.Add("#FirstName", OleDbType.VarChar).Value = "neha";
cmd.Parameters.Add("#LastName", OleDbType.VarChar).Value = 20;
cmd.ExecuteNonQuery();
conn.Close();
}
catch (Exception ex)
{
result = false;
}
cat = null;

Yes I tell you to all of you that we don't need to export data by gridview to MS Access , we can do this directly create database in MS Access using C#