How to Decrypt & loop through each and every row in GridView

Question

Hi All,

How can I all loop throw the values in the gridview and decrypt them all and display it in the gridview decrypted.

my code goes like this

public string Decrypt(string sEncryptText)
{
if (sEncryptText.Length == 0)
return (sEncryptText);
return (DecryptString(sEncryptText, sKey));
}

protected static string DecryptString(string InputText, string Password)
{
RijndaelManaged RijndaelCipher = new RijndaelManaged();
byte[] EncryptedData = Convert.FromBase64String(InputText.Replace(" ", "+"));
byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());
PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(Password, Salt);
ICryptoTransform Decryptor = RijndaelCipher.CreateDecryptor(SecretKey.GetBytes(16), SecretKey.GetBytes(16));
MemoryStream memoryStream = new MemoryStream(EncryptedData);
CryptoStream cryptoStream = new CryptoStream(memoryStream, Decryptor, CryptoStreamMode.Read);
byte[] PlainText = new byte[EncryptedData.Length];
int DecryptedCount = cryptoStream.Read(PlainText, 0, PlainText.Length);
memoryStream.Close();
cryptoStream.Close();
string DecryptedData = Encoding.Unicode.GetString(PlainText, 0, DecryptedCount);
return DecryptedData;
}

protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow) { foreach (TableCell cell in e.Row.Cells)
{
Label lblEMPNAME = (Label)cell.FindControl("lblEMPNAME");
string EName = lblEMPNAME.Text.ToString();
lblEMPNAME.Text = Decrypt(EName); }
}
}

For the first row,
In Ename it is showing the value "ffipl1B4CN8ICBenKzFHrjm42C0NtOQbBVaevprGrSU="
In lblEMPNAME.Text it is showing the value "xyz"

For the second row, In Ename it is showing the value "xyz" When it came to the next line i.e., lblEMPNAME.Text = objED.Decrypt(EName); it is getting the below error Invalid length for a Base-64 char array or string.