Automate the process of filling the ASP.NET form from excel file

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C#

ASP.NET

I have an asp.net form which takes several text values to fill in before the final submit. It takes a lot of time to copy and paste the data to asp.net web page.
How can I automate this process as
-> data should be read from excel and filled in web page.
-> after all the validation, submit button should be clicked automatically.

Thanks

What I have tried:

I tried using Watin tool, but it is not effectively completing this task.