HTTP 426 – Upgrade Required
The HTTP 426 Upgrade Required status code indicates that the server refuses to process the request using the current protocol but is willing to do so if the client upgrades….
Tag: Troubleshooting
HTTP 412 – Precondition Failed
The HTTP 412 Precondition Failed status code indicates that one or more conditions specified in the request headers (preconditions) were not met by the server. These preconditions are typically used….
HTTP 408 – Request Timeout
The HTTP 408 Request Timeout status code indicates that the server did not receive a complete request from the client within the server’s allotted time. This typically happens when the….
HTTP 406 – Not Acceptable
The HTTP 406 Not Acceptable status code indicates that the server cannot produce a response matching the list of acceptable values defined by the client in the request headers. This….
HTTP 405 – Method Not Allowed
The HTTP 405 Method Not Allowed status code indicates that the server recognizes the request method (e.g., GET, POST, PUT, DELETE, etc.) but the target resource does not support it…..
System.Data.SqlClient.SqlException – Violation of PRIMARY KEY constraint
The System.Data.SqlClient.SqlException – Violation of PRIMARY KEY constraint is a runtime exception in C# that occurs when the application tries to insert or update a row in a SQL Server….
System.Data.SqlClient.SqlException – Cannot find column ‘xyz’
The System.Data.SqlClient.SqlException – Cannot find column ‘xyz’ is a runtime exception in C# that occurs when the application tries to access a column in a SQL Server database that does….
System.Data.SqlClient.SqlException – Cannot insert the value NULL into column ‘xyz’
The System.Data.SqlClient.SqlException – Cannot insert the value NULL into column ‘xyz’ is a runtime exception in C# that occurs when the application tries to insert or update a row in….
System.Data.SqlClient.SqlException – String or binary data would be truncated
The System.Data.SqlClient.SqlException – String or binary data would be truncated is a runtime exception in C# that occurs when the application tries to insert or update data in a SQL….
Microsoft.EntityFrameworkCore.DbUpdateException – An error occurred while updating the entries
The Microsoft.EntityFrameworkCore.DbUpdateException – An error occurred while updating the entries is a runtime exception in C# that occurs when Entity Framework Core encounters an error while saving changes to the….