I'm using following code to connect with a Excel file with OleDB:
Connection = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Path + ";Extended Properties=Excel 12.0;")
Command = New System.Data.OleDb.OleDbDataAdapter("select * from [Sheet1$]", Connection)
DataSet = New System.Data.DataSet
Command.Fill(DataSet)
Connection.Close()
I would like to get the name of the first excel sheet and put it in a string variable so I can use it in the SQL command. How can I do this?
Related
I have a list of client names, project names, employee names, and hourly rates in an OpenOffice spreadsheet that I need to import to Visual Basic .net 2017. It would be preferred if I could do this to a combo box, so the user can just select the names from a drop-down list. It seems as if this is impossible without setting up an SQL server. Does anyone know how I should go about doing this?
I've tried this but it says that it can't connect to Microsoft.Ace.OLEDB.12.0
I got this code from a YouTube video
Private Sub btnGetSpread_Click(sender As Object, e As EventArgs) Handles btnGetSpread.Click
Try
Dim MyConnection As System.Data.OleDb.OleDbConnection
Dim dataSet As System.Data.DataSet
Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
Dim path As String = "P:\Coding\Visual Studio\Visual Basic\TestProject\TestProject\bin\Files\Company_Sheet.ods"
MyConnection = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Ace.OLEDB.12.0;Data Source =" + "P:\Coding\Visual Studio\Visual Basic\TestProject\TestProject\bin\Files\Company_Sheet.ods" + ";Extended Properties=Excel 12.0;")
MyCommand = New System.Data.OleDb.OleDbDataAdapter("select * from [Sheet1$]", MyConnection)
dataSet = New System.Data.DataSet
MyCommand.Fill(dataSet)
dgvSpread.DataSource = dataSet.Tables(0)
MyConnection.Close()
Catch ex As Exception
MsgBox(ex.Message.ToString)
End Try
End Sub
This will get you started. I sometimes have to import data from Excel spreadsheets into an Oracle database, this code is years old, but still works (VS 2013). Modify to suit your situation.
Dim sourceFile As String = "C:\Users\appdata\Documents\SomeData.xls"
Dim srcConnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & sourceFile & ";Extended Properties=""Excel 8.0;HDR=YES;"""
Dim srcConn As OleDbConnection = New OleDbConnection(srcConnString)
srcConn.Open()
' in the select statement, the fields are the column names in the spreadsheet and are expected to be in row 1 and are case sensitive
' the from clause in the query is the tab of the spreadsheet where the data is
Dim cmdExcel As OleDbCommand = New OleDbCommand("Select NAME,ADDRESS,CITY,STATE,ZIP From [DATA$] Where some where clause", srcConn)
Dim drExcel As OleDbDataReader = cmdExcel.ExecuteReader()
' Now loop through the rows in the spreadsheet
While drExcel.Read()
'Do stuff ...
End While
I have the following problem, by using the connection string:
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filename +
";Extended Properties=Excel 12.0 Xml;"
Then, I can execute the open-task. Nevertheless, if I want to use the following connection string:
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filename +
";Extended Properties=Excel 12.0 Xml;HDR=NO"
I get a mistake, saying me that the installable isam could not be found.
What is wrong with the second connection string, as I need this one because in my worksheet no headers are used.
Thanks in advance
if you want to query excel you must have a '$' sign after the sheet name in order to define the sheet as a table.
anyway that is the code i wrote for that purpose:
Try
Dim Myconnetion As New OleDbConnection
Dim DataSet As System.Data.DataSet
Dim MyCOmmand As System.Data.OleDb.OleDbDataAdapter
Dim Path As String = fullpath
Myconnetion = New System.Data.OleDb.OleDbConnection("provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Path + ";Extended Properties=Excel 12.0;")
MyCOmmand = New System.Data.OleDb.OleDbDataAdapter("SELECT * FROM " & "[" & sheetname & "$]")
DataSet = New System.Data.DataSet
MyCOmmand.Fill(DataSet)
dgv.DataSource = DataSet.Tables(0)
Myconnetion.Close()
Catch ex As Exception
MsgBox(ex.Message.ToString)
End Try
I need help my program don't the use connection string that i want instead it find the access file on this folder and display error
Could not find file 'C:\Users\user\Documents\Visual Studio 2008\Projects\Patientt\Patientt\bin\Debug\db_hospital.accdb'.
here is my code
con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\db_hospital.accdb"
con.Open()
sql = "SELECT * FROM tblPatients"
ds.Clear()
da = New OleDbDataAdapter(sql, con)
da.Fill(ds)
Me.DataGridView1.DataSource = ds.Tables(0)
con.Close()
Put your access file in the debug folder and change the connection string like this
con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Application.StartupPath + "\\db_hospital.accdb"
I've created a small vb.net application that connects to a an excel sheet on a shared folder.
It works great if i open the excel before using the the application , the issue is when the excel isn't open in the background i get a "System.Data.OleDb.OleDbException" error when trying to open a connection.
I've read a bit about this error and i understand it has something to do with access rights to a local temp library.
So my questions are:
1) Is there a solution?
2) Is this the best connection strategy for my situation where the excel files sit on a shared drive?
Connection code:
skuPath = "C:\path.xlsm"
cn = New System.Data.OleDb.OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;" + "data source=" + skuPath + ";Extended Properties=Excel 8.0;")
q1 = "select * from [" + year + "$B4:V128]"
da = New System.Data.OleDb.OleDbDataAdapter(q1, cn)
cn.Open()
da.Fill(ds, "Table1")
cn.Close()
dt = ds.Tables(0)
I receive the error on cn.Open().
Got exactly the same problem few weeks ago.
Error is caused by incorrect version of oledb provider, just as Steve suggested.
Try this:
skuPath = "C:\path.xlsm"
cn = New System.Data.OleDb.OleDbConnection("provider=Microsoft.ACE.OLEDB.12.0;" + "data source=" + skuPath + ";Extended Properties=""Excel 12.0;HDR=Yes""")
q1 = "select * from [" + year + "$B4:V128]"
da = New System.Data.OleDb.OleDbDataAdapter(q1, cn)
cn.Open()
da.Fill(ds, "Table1")
cn.Close()
dt = ds.Tables(0)
I am trying to read data from an excel sheet but there is an exception saying that no value given for one or more required parameters which I don't understand. Here is my code upto where the error is pointing to:
Dim MyConnection As System.Data.OleDb.OleDbConnection
Dim DtSet As System.Data.DataSet
Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
MyConnection = New System.Data.OleDb.OleDbConnection _
("Provider=Microsoft.ACE.OLEDB.12.0; Data Source=" & Application.StartupPath & "\Staff Contracts.xlsx; Extended Properties=""Excel 12.0;HDR=NO""")
MyCommand = New System.Data.OleDb.OleDbDataAdapter _
("select * from [Staff Contracts$A4:K14] where I=176", MyConnection)
MyCommand.TableMappings.Add("Table", "TestTable")
DtSet = New System.Data.DataSet
MyCommand.Fill(DtSet)
The exception points to that last line MyCommand.Fill(DtSet) which shows me that there is a problem with my select statement. Previously my code reads the data and displays it without the where clause in the select but when I added the where statement so that it can only read data from rows where the column I has a value equal to 176, it instead gives an exception that shows that some required parameter is missing a value
In case of HDR = NO, I column will become F9 because oledb will name the column F1.. Fn for it's internal reference.
MyCommand = new System.Data.OleDb.OleDbDataAdapter("select * from [Staff Contracts$A4:K14] where F9=176", MyConnection);
In this case the OLEDB driver will create columnnames for each column in the selection (F1 to Fn). so if you change the range "A4:K14" to "B4:K14" then column F9 will be F8.