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Home/ Questions/Q 6144173
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Editorial Team
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Editorial Team
Asked: May 23, 20262026-05-23T18:36:51+00:00 2026-05-23T18:36:51+00:00

I have a web application in that in have two forms in this i

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I have a web application in that in have two forms in this i have pass the Encrypted data with the Querystring.In second page i get the Querystring data and then i need to Decrypt the data & bind that data in my page … for this i have write the code in this Encrypt and Decrypt is working in one(same aspx) page ,but when i redirect the page Decrypt is throwing Error like

             Invalid length for a Base-64 char array.

What can i do to resolve this Error Please help me..

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  1. Editorial Team
    Editorial Team
    2026-05-23T18:36:51+00:00Added an answer on May 23, 2026 at 6:36 pm

    64-bit encoding does not work well with spaces in the string

    Add the following: stringToDecrypt = stringToDecrypt.Replace(" ","+");

    Plus sign will be interpreted as a space when u call the FromBase64String method

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