Questions tagged [tobase64string]

ToBase64String() is a method in the C# System library that converts an array of 8-bit unsigned integers and converts them to its string equivalent with Base-64 encoding. To use this tag, the programming language must be C# and it must concern the use of this method.

Syntax

Given a byte array of

byte[] bytArr  = new byte[1] { 2 }; // 00000010

ToBase64String() will convert the byte array to a new string with its equivalent value using Base-64 encoding.

string b64Str = Convert.ToBase64String(bytArr);

The variable b64Str will now contain Ag==.

References

Microsoft

144 questions
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How to decode/encode string to base64 in typescript express server

I have an express server written in typescript. As atob() or btoa() works on browsers, on Nodejs. We generally use Buffer.from("some-string").toString('base64') to encode string to base64. However, this doesn't seem to work when I am writing the…
Arnab Roy
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Convert Image data type into Base64 and Base64 into Image data type

I'm using Data-Type "Image" in MS SQL 2012 to store Image. problem: I have an image in BASE64 string in…
Divya Agrawal
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Base64 Encode Large Zip File Using Powershell

I am trying to base64 encode a ~66MB zip file to a string and write it to a file using Powershell. I'm working with a limitation that ultimately I have to include the base64 encoded file string directly into a Powershell script, such that when the…
abnerkanezzer
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Send Base64 as image on Mobile Share

Base64 data in IMG tag /*Allow native mobile share of QR */ function shareQROnMobile() {if (navigator.share) { navigator.share({ title: document.title, text: document.title + ", " + window.location.href, url:…
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How does encode and decode 64 figure out that the last few zeros are mere padding?

https://learn.microsoft.com/en-us/dotnet/api/system.convert.tobase64string?view=net-5.0 It says If an integral number of 3-byte groups does not exist, the remaining bytes are effectively padded with zeros to form a complete group. In this example,…
user4951
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Fetch image from URL and convert it to base64 string - Flutter

I've an array of string containing 5 image urls. I'm looking out for a way to fetch the image from url, then encode the image as base64 string, and finally insert that to another array. The solution should work for both mobile and web in flutter. I…
iAkshay
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Encode to Base64 a specific file by Windows Command Line

I need to use a command line on Windows OS to generate the base64 data of a specific file on the screen (without generating a file). I have see that on Unix system is sufficient to use cat | base64 to obtain the file's contents encoded…
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Python - Is Base64 data a valid image?

I am using Python and I have a base64 string. I want to know that if the base64 data I have received is a image and not any other file (eg. PDF, DOCX) whose extension is changed to image extension. Example: string1 =…
Nitish
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Can a byte[] array ever not convert to a Base64 string?

Is there any combination of a byte[] that will cause this to fail, other than byteArray being null? var myString = Convert.ToBase64String(byteArray); I'm thinking something like... starting or ending with byte zero (null?). An Empty byte[]? A…
Suamere
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Is there any way to get base64 encoded string of any remote file in javascript?

I have an image url: url = "https://wallpaperaccess.com/full/3678503.png"; Is there any way to get base64 encoded string of that remote file in javascript?
annesha
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Auth guard [api] is not defined

I checked several questions with the same error above I mentioned. But couldn't find the answer. I'm trying to turn my base64 string into an image file. Here is the code in my controller, public function createImage(Request $request) { …
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How do i encode powershell script to base64 UTF16-LE string using C#

I want to encode a powershell script from string, but I can't get it to be encoded in UTF16-LE. I am using this to encode it to base64 string. string encodedscript = "powershell -nop -enc " +…
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How to convert a large uint8 Array to base64 encoded string

This differs from caio keto's question as I'm dealing with large arrays and none of the proposed solutions for his question works for me. I'm trying to convert a very large uin8array to base64 like this: const encodedString =…
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i want to convert array buffer to base64, which is best method

I am working on angular12, via api i get pdf data, i am converting that data to arrayBuffer via method below: getArrayBuffer(url: string, queryParams: HttpParams = new HttpParams()): Observable { this.spinner.show(); return this.http …
Bhrungarajni
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Having trouble getting a Base64 string from FileReader

I'm attempting to pass a file from an file input field's file list through FileReader and get the Base64 string to pass to the server via axios. The FileReader's onload function seems to get the string, but it evidently loses the string before it is…
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