Posting large text via classic-ASP form

See more:

ASP

Javascript

form

Canvas

Base64

I gets an error due to can't get the value of textbox below:

ADODB.Stream error '800a0bb9'

Arguments are of the wrong type, are out of acceptable range, or are in conflict with one another.

My HTML Codes

<form method="POST" action="?X=1" id="myForm">
    <input type="text" name="img_val" id="img_val" value="" />
    <input type="submit" value="Submit Largest Code" />
</form>

My ASP Codes:

<%

IF LEN(Request("X"))>0 THEN

base64String = Trim(Request.Form("img_val"))
Set tmpDoc = Server.CreateObject("MSXML2.DomDocument")
Set nodeB64 = tmpDoc.CreateElement("b64")
nodeB64.DataType = "bin.base64"
nodeB64.Text = Mid(base64String, InStr(base64String, ",") + 1)
set bStream = server.CreateObject("ADODB.stream")
bStream.type = 1
call bStream.Open()
call bStream.Write(nodeB64.NodeTypedValue)
caminho=Server.MapPath("/SS/imagem.png")
call bStream.SaveToFile(caminho, 2)
call bStream.close()
set bStream = nothing

END IF
%>

Sample Base64 code that I trying to post below:

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAB4AAAAQFCAYAAABQN9UwAAAAAXNSR0IArs4c6QAA

What I have tried:

Hi All,

I'm trying post base64 code to save as an image but I can't post the value of textbox when I try submit my base64 code.

Is there limit send to codes via posting form?