How to Convert Base64 String into Png Image Mvc5 C#?

Question

I am Trying to Convert a Base64 encoded string to A Png Image, But the Code Shows Exception of Parameter is Not Valid on Image.FromStream(). After Debugging i cam up with this error on MemoryStream Object "ReadTimeout = 'ms.ReadTimeout' threw an exception of type 'System.InvalidOperationException'" . I am stuck, Is there any Solution or Alternative to Convert String to Png in C#?

Here is My code

string code = "string";
var databytes = Encoding.Unicode.GetBytes(code);
var base64 = Convert.ToBase64String(databytes);
Byte[] Bytes = Convert.FromBase64String(base64);
//Stream bytes
MemoryStream ms = new MemoryStream(Bytes, 0, Bytes.Length);
//convert image

Image newImage = Image.FromStream(ms);
newImage.Save("~/Content/");

Elis · Accepted Answer · 2017-05-29 08:17:07Z

1

Try this:

byte[] bytes = Convert.FromBase64String(base64);
Image image;
using (MemoryStream ms = new MemoryStream(bytes))
{
    image = Image.FromStream(ms);
}

answered May 29, 2017 at 8:17

Elis

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kkakkurt · Accepted Answer · 2017-05-29 08:17:18Z

1

You can convert Base64 string into png in this way:

    byte[] bytes = Convert.FromBase64String(base64);

    Image image;
    using (MemoryStream ms = new MemoryStream(bytes))
    {
        image = Image.FromStream(ms);
        image.Save("~/Content/", System.Drawing.Imaging.ImageFormat.Png);
    }

answered May 29, 2017 at 8:17

kkakkurt

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6 Comments

Muhammad hanif Over a year ago

I tried That , But As i mentioned Its is showing exception at Image.FromStream(ms) the Exception is ReadTimeout = 'ms.ReadTimeout' threw an exception of type 'System.InvalidOperationException'

kkakkurt Over a year ago

I moved the image.Save part inside the using block and updated the answer. It can be fix your error.

Muhammad hanif Over a year ago

I tried, But same Error {{"Parameter is not valid."} occurs at Image.FromStream(ms) line

Muhammad hanif Over a year ago

Actually I am Converting a Partial View to String, And then i wan to Generate Png from That String

kkakkurt Over a year ago

Did you tried to encode your string with UTF8? var databytes = Encoding.UTF8.GetBytes(code);

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