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saving changed data from dataset to datasource

hello,
when i'm trying to save changed data from the dataset to datasource(an excel
file)
i get this error
An unhandled exception of type 'System.Invalid OperationExcept ion' occurred
in system.data.dll
Additional information: Update requires a valid UpdateCommand when passed
DataRow collection with modified rows.

i use this code (straight from msdn)
Dim DS As System.Data.Dat aSet
Dim MyCommand As System.Data.Ole Db.OleDbDataAda pter
Dim MyConnection As System.Data.Ole Db.OleDbConnect ion

MyConnection = New System.Data.Ole Db.OleDbConnect ion( _
"provider=Micro soft.Jet.OLEDB. 4.0; " & _
"data source=C:\myDat a.XLS; " & _
"Extended Properties=Exce l 8.0;")
' Select the data from Sheet1 of the workbook.
MyCommand = New System.Data.Ole Db.OleDbDataAda pter( _
"select * from [Sheet1$]", MyConnection)

DS = New System.Data.Dat aSet()
MyCommand.Fill( DS)

'Here code to change something in dataset

'this i use to update
mycommand.updat e(ds)

MyConnection.Cl ose()

anybody?
thanx in advance


Nov 20 '05 #1
0 1045

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