Base64(String) Convert Excelsheet

https://www.devcurry.com/2009/01/convert-string-to-base64-and-base64-to.html  

use bellow code it will work properly 

what iam doing here , converting base64 code to file as you wanted  excel sheet .

 

for that i have taken one example of base64code ,

in my visula studio created ExcelDocument folder 

 

in web api you can use 

tring path = HttpContext.Current.Server.MapPath("~/ExcelDocument");

in case of mvc  

Server.MapPath("~/ExcelDocument") 

 

please use bellow code finally your xl document will write to  inside ExcelDocument folder.

 

string base64code = "LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tCioqKiBTaGVldCBTaGVldDEgKioqCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQotLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0=";

string path = HttpContext.Current.Server.MapPath("~/ExcelDocument");

string filename = "test" + ".xlsx";

//set the image path

string filepath = Path.Combine(path, filename);

byte[] fileinbytes = Convert.FromBase64String(base64code);

File.WriteAllBytes(filepath, fileinbytes);

 

Thanks

If it helps please mark as answer 

hello dear,

 

please have a look below links:

 

https://www.codeguru.com/columns/dotnet/base64-encoding-from-c.html

https://www.devcurry.com/2009/01/convert-string-to-base64-and-base64-to.html