I am used sheet2api to convert spreadsheet to api.
I used the below credentials.
user id : test
password :test
https://sheet2api.com/docs/UHC796KdSvqC/testsp
As per their documentation here is the instructions to read api can you give an equivalent C# MAUI Blazor code
Authentication
If you have configured your API to require authentication then all requests will need to include an Authorization header.
The credentials are constructed like this:
The username and the password are combined with a colon (aladdin:opensesame).
The resulting string is base64 encoded (YWxhZGRpbjpvcGVuc2VzYW1l).
That string should when be included within the Authorization header:
Authorization: Basic YWxhZGRpbjpvcGVuc2VzYW1l