Passing base64 string using c# string variable. Error: Index was outside the bounds of the array

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Still A Newbie. I would like to replace the long Base64 string with a variable but keep getting error: Index was outside the bounds of the array.

Scenario: I am retrieving the full base64 string from SQL database e.g data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7

I then split the string for the section that I want that is after the comma ','.

C#

public SqlDataReader reader;
    public String ClientSigImg;
    public String ClientSigImg1;

    ClientSigImg = reader[0].ToString();
    ClientSigImg1 = ClientSigImg.Split(',')[1];

So the above base64 string changes on user input and instead of manual input like below

C#

string base64 = @"R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"
   byte[] imageBytes = Convert.FromBase64String(base64);

I would like to replace that long string with:

C#

string base64 =ClientSigImg1;
    byte[] imageBytes = Convert.FromBase64String(base64);

Posted 17-Jun-14 1:04am

Uriel Tinashe Patsanza

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OriginalGriff · Answer 1 · 2014-06-17T01:21:00

Check your data in the DB: almost certainly you have saved it wrong.
If I try your code:

C#

String ClientSigImg;
String ClientSigImg1;

ClientSigImg = @"data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";
ClientSigImg1 = ClientSigImg.Split(',')[1];
string base64 = ClientSigImg1;
byte[] imageBytes = Convert.FromBase64String(base64);

It works - and I get an array of 43 bytes.

So I would suspect that what you think is valid data in your DB is not: at least one entry does not have a comma. So the Split returns an array of one string, and your indexer fails giving you the "Index was outside the bounds of the array" exception.