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Using convert function in VB.NET

Experts i am writting VB.NET code and i am trying to encryt the connection string.Following is the logic i am using but i am getting this error when i use the convert function.
Can you please quiclky help me on this.I am sure it will be a piece of cake for you.

Public Class Encryption
Protected Friend Shared Function encryption(ByVal connectionString As String) As String
Return Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(connectionString))
End Function
End Class

Error::: Overload resolution failed because no accessible 'Convert' accepts this number of arguments.

Thanks

YaakovS

Maybe try doing the conversion first and then returning the value.

You may want to post this in the VB.net section (https://www.experts-exchange.com/Programming/Programming_Languages/Dot_Net/VB_DOT_NET/) you can try asking a moderator to move it there, as your more likely to get useful responses there.

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parveenmehta

ASKER

I actually rewrote the code in C# and that solved the problem.But now i am stuck into another issue.
I am doing this conversion here
byte[] b=Convert.FromBase64String(System.Configuration.ConfigurationSettings.AppSettings["dbConString"].ToString());
Getting this error
Invalid length for a Base-64 char array
Any idea or any solutions ?
Thanks