SSRS从Oracle Server检索BLOB到SSRS报告中的文本

Question

I am trying to convert a BLOB from Oracle server to text in SSRS.

I have tried:

Convert.ToBase64String(Fields!BLOB.Value)

And I have also tried:

System.Convert.ToBase64String(Fields!BLOB.Value)

But it converts it to UTF-8 encoding and I get these variables VHaw5nl= .

I've also tried writing the following code:

Public Function Decoding(ByVal s As String) As String  
 Dim rntString As String
rntString = Encoding.UTF8.GetString(s)
End Function

And then putting this in my expression:

Code.Decoding(Fields!BLOB.Value)

But I am receiving an error after that.

How can I solve this problem?

Answer 1

try: var myBytes = (byte[])dr["columnname"]; dr is the data reader. Once you get it into an array, you can use Encode to convert it to a string format.