tutorial on resolving ASP. NET Core MySql varchar String interception example

With MYSQL in ASP. NET Core, if the field type is, regardless of the length of the varchar set, when inserting or updating data, it will automatically truncate (intercept 255-length characters).

The cause of the problem is that the MySql.Data.EntityFrameworkCore package was used (the version I used is 7.0.7-m6 ), it could be a version issue, and the upgrade version might not be the problem.

workaround : All MySql field types are varchar fields (field lengths greater than 255), and the type is changed text (can be no length, default is 0).

The EF Core mapping configuration is then modified as follows:

protected override void Onmodelcreating (ModelBuilder ModelBuilder) {var entity = modelbuilder.entity<entity> ();    Entity. Property (P = p.body). Hascolumntype ("text"); Add Hascolumntype ("text") base. Onmodelcreating (ModelBuilder);}

Resources:

• . Net Core Entity Framework mysql-string fields store 255 symbols only

• MYSQL Connector for. Net core truncates text to 255 characters