'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'RComboBox.Padding' hides inherited member 'ComboBox.Padding'. Use the new keyword if hiding was intended.

'RComboBox.AutoSize' hides inherited member 'Control.AutoSize'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

The field 'MyButton._buttonState' is assigned but its value is never used

'Encoding.UTF7' is obsolete: 'The UTF-7 encoding is insecure and should not be used. Consider using UTF-8 instead.' (https://aka.ms/dotnet-warnings/SYSLIB0001)

'WebClient.WebClient()' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'RComboBox.Padding' hides inherited member 'ComboBox.Padding'. Use the new keyword if hiding was intended.