Re: Unable to cast object of type 'System.String' to type 'System.Byte[]'.

qwe123kids — Tue, 30 Jun 2009 10:12:54 GMT

Hi,
U may have Use ASCIIENCODING,,

String MyString;

System.Text.ASCIIEncoding ASCIIEncoding = New System.Text.ASCIIEncoding;
MyString = ASCIIEncoding.GetString(Bytes);

OR
http://bytes.com/topic/net/answers/788635-unable-cast-object-type-system-byte-type-system-iconvertible
Check the above Link

Unable to cast object of type 'System.String' to type 'System.Byte[]'.

anand_marlapudi — Tue, 30 Jun 2009 09:02:27 GMT

i am geting an error on the below code

the follwoing error is

"Unable to cast object of type 'System.String' to type 'System.Byte[]'. "

theQuery.Connection.Open()

theDataAdapter.Fill(theDataSet)

theQuery.Connection.Close()

Dim theQuery As New OleDbCommand("SELECT Images FROM tblImages", New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Application.StartupPath & "\Images.mdb;"))Dim theDataSet As New DataSet()Dim theDataAdapter As New OleDbDataAdapter(theQuery)'MsgBox(theDataSet.Tables(0).Rows.Item(0).Item(0))

'get row

Dim theItem As Object = theDataSet.Tables(0).Rows(0).Item(0)

Dim correctObject() As Byte = CType(theItem, Byte())

If correctObject Is Nothing = False Then 'read into memstream

theMemStream.Write(correctObject, 0, correctObject.Length)

theMemStream.Position = 0

Using theMemStream As New MemoryStream()Me.PictureBox1.Image = Image.FromStream(theMemStream)End Using

End If

Visual Basic .NET

Re: Unable to cast object of type 'System.String' to type 'System.Byte[]'.

Unable to cast object of type 'System.String' to type 'System.Byte[]'.