aspnet for web.config postgresql setting

Dear parterns,
We would like to change database from mssql to postgresql, and now we use aspnet for website program develop, and we need to change it's database connection string from mssql to postgresql. After adjust the setting as shown as below:

But it show some error message as listed as below. Please kindly help us to adjust the question. Thanks a lot.
enter image description here

0 answers