Save Xml to database append (?) at beginning of the first line

Hi,

I have this code to save xml to database:
 Dim ms As New MemoryStream, m_Buffer() As Byte, m_XML As String = ""

        myDashboard.SaveToXml(ms)
        m_Buffer = ms.ToArray()
        ms.Flush()
        ms.Close()

        m_XML = System.Text.Encoding.UTF8.GetString(m_Buffer)
         
        '-----
        Dim SqlDoc As String = "UPDATE Dash Set DashStream = @DashStream where Idstamp = @Idstamp"
        Dim sqlconn As SqlConnection = New SqlConnection(CBD.ConnectionStringBD)
        sqlconn.Open()
        Dim Com As New SqlCommand(SqlDoc, sqlconn)
        Com.Parameters.Add("@IdstampDashBoard", SqlDbType.VarChar, 50).Value = mIdStampDashBoard
        Comm.Parameters.Add("@DashBoardStream", SqlDbType.VarChar, -1).Value = m_XML
        Dim x As Integer = CommandActualiza.ExecuteNonQuery()
        sqlconn.Close()

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Works fine but appends a (?) at beginning of the first line like example:
?<?xml version="1.0" encoding="utf-8"?>

But only when saved in database, Analyzing with debug (m_XML) in this line (Comm.Parameters.Add("@DashBoardStream", SqlDbType.VarChar, -1).Value = m_XML) the string is correct whitout (?) character.

I tried to change encoding but it appends one or two characters in beginnig also.

Table field is Varchar(MAX).
best regards
rflorencioAsked:
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ste5anSenior DeveloperCommented:
When I need to guess: Problem with the encoding and the BOM.. hard to tell without the real data.
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rflorencioAuthor Commented:
Hi,

This the file saved in database, but removed (?) from the beginning ?<?xml version="1.0" encoding="utf-8"?>

best regards
XmlExample.xml
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Fernando SotoRetiredCommented:
Hi rflorencio;

Why have you set the size of the data to be -1 in the following statement?
Comm.Parameters.Add("@DashBoardStream", SqlDbType.VarChar, -1).Value = m_XML

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Should it not be something like the following?
Comm.Parameters.Add("@DashBoardStream", SqlDbType.VarChar, m_XML.Length).Value = m_XML

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rflorencioAuthor Commented:
Hi,

No, this is not the problem.

best regards
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Fernando SotoRetiredCommented:
I guess I am asking why you have the data as having no size?
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rflorencioAuthor Commented:
Hi,

I have always used this value for varchar max. But I also tried with your code and it gives the same.

best regards
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